Herpes zoster (HZ) results from the reactivation of varicella-zoster virus (VZV) in dorsal root ganglia, often triggered by immune decline. This multicenter study aimed to describe the frequency, clinical and demographic characteristics, and risk factors of HZ in Türkiye to inform clinical management and prevention strategies. This retrospective analysis was conducted on 503 patients diagnosed with HZ between 2014 and 2024 across 17 hospitals in nine Turkish provinces. Data included demographics, comorbidities, immunosuppressive therapy, dermatomal involvement, rash duration, antiviral treatment, and vaccination status. Descriptive statistics were applied. A total of 503 patients were included in the study. Of these, 281 (55.9

In the article titled, "The Role of CO-RADS Scoring System in the Diagnosis of COVID-19 Infection and its Correlation with Clinical Signs", published in "Current Medical Imaging", 2022; 18: DOI: 10.2174/157340561766621082715 0937, a change was made in the name of a co-author. The correct name is Dr. Merve Caglar Özer, which has been updated accordingly [1]. The original article can be found online at: https://www.eurekaselect.com/article/117532 Original: Merve Caglar1 Corrected: Merve Caglar Özer1.

BACKGROUND:The supraorbital ethmoid cell (SOEC) is a pneumatized extension of the anterior ethmoid sinus that may harbor residual disease after surgery, making complete surgical clearance challenging. OBJECTIVES:To evaluate the surgical and prognostic relevance of SOEC involvement in frontal sinus (FS) inverted papilloma (IP), particularly its association with revision surgery and recurrence. METHODS:Data from 147 IP patients, including 32 with FS involvement, were retrospectively reviewed to identify true FS origin, FS extension, and SOEC involvement based on operative records and CT scans. RESULTS:True FS mucosal origin was identified in 2 patients (6.25%), while SOEC involvement was observed in 8 (25%), all of whom had prior surgeries. Among the 19 patients with previous surgeries, 8 (42.1%) had SOEC involvement, compared to none of the 13 without (p = 0.007). Patients with SOEC involvement underwent significantly more surgeries (median: 2 vs. 1; p = 0.041). True FS origin rates did not differ significantly (p = 0.345). After a median follow-up of 40.5 months, recurrence was not observed in patients with SOEC involvement (0/8), compared to 6 recurrences among those without (6/24; p = 0.149). CONCLUSIONS AND SIGNIFICANCE:SOEC involvement was more common in revision cases and linked to multiple prior surgeries, highlighting its importance in surgical planning and follow-up.

Purpose This paper aims to determine the knowledge and attitudes of the physicians regarding human immunodeficiency virus (HIV)/acquired immune deficiency syndrome (AIDS), to emphasize that these patients exist and they will exist in the future and to raise awareness so as to prevent that their rights to treatment are revoked. Design/methodology/approach The survey was conducted via a link sent through an online system. Random physicians from 81 cities of the country were invited to the survey. The survey has 41 questions regarding knowledge and attitudes in total, including epidemiological information such as age, gender and title. Findings A total of 3,107 physicians has voluntarily participated in the study. In total, 2,195 (70.7%) are internal physicians and 912 (29.3%) are surgical physicians among the participant physicians. In total, 1,452 (46.7%) of the participants are specialist physicians, 608 (19.6%) of the participants are practising physician and the rest of it is physician assistants, academicians and dentists, respectively. Originality/value In this study, it has been found out that the physicians have a lack of knowledge on HIV/AIDS and they adopt a discriminatory attitude towards HIV-positive persons. HIV-positive patients who are exposed to discrimination and scared of being uncovered refrain from applying to hospitals for treatment, which puts public health into jeopardy due to the high viral load and these patients are faced with difficulties in coping with both medical and emotional load of the disease.

OBJECTIVE: Crimean-Congo hemorrhagic fever (CCHF) is a viral zoonosis transmitted by ticks and may have an acute and severe course with fever, bleeding, muscle aches, headache, diarrhea, weakness, and similar non-specific symptoms. This study aimed to determine the distribution of CCHF cases in Amasya province, which is endemic for this disease, according to districts, epidemiological, clinical, laboratory, and treatment characteristics. METHODS: The characteristics of 88 CCHF cases over 18 who were admitted to our clinic and treated between January 2013 and January 2023 were evaluated retrospectively. Demographic data such as age, gender, occupation, district of residence, history of tick contact, the incubation period of the disease, period of development of the disease (months, years), length of hospital stay, symptoms, physical examination and laboratory findings, blood product replacement therapies applied, recovery and mortality status of the patients were reached by scanning the patient files. RESULTS: The mean age (+/- standard deviation) of 88 cases was 48 +/- 18 years, and 53 (60.2%) were male. Of the patients, 68 (77.3%) were engaged in farming and animal husbandry, and 79 (89.7%) lived in villages and hamlets. Tasova district had the highest frequency of cases, with 29 (32.9%) patients. June was the most common month for the disease, with 31 (35.2%) cases. The most common symptom on admission was fatigue, with a rate of 93%. Other symptoms included myalgia and arthralgia (83.2%), fever (65%), headache (64.4%), nausea-vomiting (43.5%), conjunctival hyperemia (35.2%), and diarrhea (21.7%). In clinical follow-up, bleeding was missed in 15 (17.04%) patients. On admission to the hospital, there were elevated levels of thrombocytopenia (92%), leukopenia (84.1%), aspartate aminotransferase and alanine aminotransferase (86.3%), creatinine phosphokinase (71.6%), and lactate dehydrogenase (76.1%). None of the patients were given ribavirin treatment. Our mortality rate was 3.40% with three patients. CONCLUSION: Amasya is an endemic area for CCHF with all its districts. In our province's spring and summer months, tick contact history and the farming-livestock profession should be questioned in patients with fever complaints in clinic admissions, especially emergency services. In the case of the detection of thrombocytopenia in these patients, CCHF should be kept in mind.

OBJECTIVE: During pregnancy, changes occur in many systems, including the immune system. In line with our experience in the previous years, COVID-19 infections have negative effects on pregnancy. In our study, it was aimed to evaluate the effects of COVID-19 on pregnancy, fetus and newborn, and treatment management. METHODS: In our study, 63 patients followed up between April 1, 2020 and April 1, 2021, were evaluated. Demographic data, symptoms, laboratory data, treatments, clinical course and delivery characteristics of the patients, as well as patholo-gies in the fetus and newborn were investigated retrospectively. The obtained data were statistically analyzed with Statistical Package for the Social Sciences. RESULTS: In this study, 63 pregnant COVID-19 patients aged 19-37 years were included in the study. Fifty of the patients had symptoms of COVID-19 at the time of admission. At the time of admission, 13 patients required oxygen, and ten of these patients had severe radiological involvement. Seven patients were admitted to the intensive care unit, and three of them required invasive mechanical ventilation and deceased afterward. All newborns were found negative for the COVID-19 polymerase chain reaction test. Low birth weight has been detected in eight newborns and low Apgar score in 2 of them. Respiratory distress was observed in four newborns and they were discharged from intensive. CONCLUSION: Pregnant women have more disadvantages in the course of COVID-19 and have worse maternal outcomes. In addition, treatments such as Lopinavir/Ritonavir and hydroxychloroquine did not have any effect. These patients should be carefully evaluated and followed up.

Objective:The Sinus and Nasal Quality of Life (QoL) Survey (SN-5) is a valid questionnaire that evaluates the QoL of the pediatric population associated with sinonasal diseases and symptoms. The aims of this study were to translate the SN-5 test to Turkish language (SN-5t), evaluate the internal consistency of the test and test-retest reliability and validate the translation for further use in studies in Turkish language.Methods:In this prospective study, 50 healthy subjects and 50 patients, age between 2 and 12, with sinonasal symptoms prolonged over 1 month were included to the study. Families of healthy subjects were asked to fill the SN-5t twice with 1-week interval. The patient group completed test once prior the treatment and once 4 weeks after the treatment. Cronbach's test was performed to test internal consistency and Spearman's test was performed to evaluate test-retest validity.Results:The median value of the pre-treatment tests of the patient group and control group was 25 (23-28) and 14.25 (12-16), respectively. A statistically significant difference was found between groups (p<0.001). Area under the receiver operating characteristics (ROC) curve (Aroc) value was calculated as 0.992 which stated the strong diagnostic accuracy, and the cutoff point was defined as 16.5. Cronbach's alpha value of 0.75 was found. The Spearman's rank correlation coefficient value (Spearman's rho) was calculated as 0.946.Conclusion:The Turkish translation of the SN-5 is a consistent and valid test with high sensitivity and specificity that can be used in studies including Turkish speaking population.

Objective:The purpose of this study was to investigate the relationship between anatomical variations and the fungus ball (FB), and the association between odontogenic etiologies and the maxillary sinus FB. Methods:We analyzed the clinical records of 66 patients who underwent endoscopic sinus surgery for FB.The anatomical variations determined were nasal septal deviation (NSD) and direction, presence of Onodi and Haller cell, concha bullosa and lateral recess of the sphenoid sinus.Further, dental X-ray records were reviewed to detect any possible odontogenic etiologies in patients with maxillary sinus FBs.Results: There were 41 female and 25 male patients.Positive fungal culture was found in 60 patients (91%) and the causative fungus was Aspergillus species in all cases.The correlation between NSD and localization of the maxillary sinus FB was statistically significant (p=0.0409).Maxillary sinus FB was more common on the concave side of the NSD.Presence of dental pathologies was significantly associated with maxillary sinus FB compared to the healthy side (p=0.0011).For sphenoid sinus FB, NSD was detected in a similar number for both the affected and unaffected side and there were no significant correlations (p>0.05).However, the relationship between sphenoid sinus FB and presence of lateral recess was significant (p=0.0262). Conclusion:Our study revealed that the maxillary sinus FB was more common on the concave side of the deviated septum.Also, dental pathologies or a presence of dental treatment history were associated with maxillary sinus FB.

OBJECTIVE: Comorbidities are diseases that coexist with a disease of interest or an index disease, which can directly affect the prognosis of the disease of interest or indirectly affect the choice of treatment. The Charlson comorbidity index (CCI) is the most widely used comorbidity index. In this study, it was aimed to examine the predictive role of the CCI score on the mortality of patients with COVID-19. METHODS: We have retrospectively analyzed COVID-19 patients whose diagnosis was confirmed by PCR and who were hospitalized in two centers between April 2020 and December 2020. The severity of comorbidity of the patients was categorized into five groups according to the CCI score: CCI score 0, CCI score 1-2, CCI score 3-4, CCI score 5-6, and CCI score >= 7. Factors affecting mortality and differences between groups classified by CCI were determined by logistic regression analysis and one-way analysis of variance. RESULTS: A total of 1,559 COVID-19 patients were included in the study and 70 (4.49%) patients had deceased. Half of the study population (n=793, 50.9%) had different comorbidities. The CCI score was 3.8 +/- 2.7 in deceased patients and 1.3 +/- 1.9 in surviving individuals. There was a positive correlation between CCI scores and mortality in COVID-19 patients, with each point increase in the CCI score increasing the risk of death by 2.5%. CCI score of 4 and above predicted mortality with 87.2% sensitivity and 97.9% negative predictive value. Five (0.6%) of 766 patients with CCI scores of 0, 16 (3.6%) of 439 patients with CCI scores of 1-2, 13 (6.9%) of 189 patients with CCI scores of 3-4, and a CCI score of 5, 13 (15.7%) of 83 patients with -6 and 23 (28.0%) of 82 patients with a CCI score of >= 7 died. CONCLUSION: CCI is a simple, easily applicable, and valid method for classifying comorbidities and estimating COVID-19 mortality. The close relationship between the CCI score and mortality reveals the reality of how important vaccination is, especially in this group of patients. Increasing awareness of potential comorbidities in COVID-19 patients can provide insight into the disease and to improve outcomes by identifying and treating patients earlier and more effectively.

Background: Computed tomography (CT) evaluation systematics has become necessary to eliminate the difference of opinion among radiologists in evaluating COVID-19 CT findings. Introduction: The objectives of this study were to evaluate the efficiency of CO-RADS scoring system in our patients with COVID-19 as well as to examine its correlation with clinical and laboratory findings. Method: The CO-RADS category of all patients included in the study was determined by a radiologist who did not know the rtRT-PCR test result of the patients, according to the Covid-19 reporting and data system of Mathias Prokop et al. Results: A total of 1338 patients were included. CT findings were positive in 66.3%, with a mean CO-RADS score of 3,4 ± 1,7. 444 (33.1%) of the patients were in the CO-RADS 1-2, 894 (66.9%) were in the CO-RADS 3-5 group. There were positive correlations between CO-RADS score and age, CMI, hypertension, diabetes mellitus, chronic pulmonary diseases presence of symptoms, symptom duration, presence of cough, shortness of breath, malaise, CRP, and LDH, while CORADS score was negatively correlated with lymphocyte count. The results of the ROC analysis suggested that those with age ≥40 years, symptom duration >2 days, CMI score >1 and/or comorbid conditions were more likely to have a CO-RADS score of 3-5. Conclusion: The CO-RADS classification system is a CT findings assessment system that can be used to diagnose COVID-19 in patients with symptoms of cough, shortness of breath, myalgia and fatigue for more than two days.

Coronavirus disease-2019 (COVID-19) associated pneumonia may progress into acute respiratory distress syndrome (ARDS). Some patients develop features of macrophage activation syndrome (MAS). Elevated levels of IL-6 were reported to be associated with severe disease, and anti-IL-6R tocilizumab has been shown to be effective in some patients. This retrospective multicenter case-control study aimed to evaluate the efficacy of tocilizumab in hospitalized COVID-19 patients, who received standard of care with or without tocilizumab. Primary outcome was the progression to intubation or death. PSMATCH (SAS) procedure was used to achieve exact propensity score (PS) matching. Data from 1289 patients were collected, and study population was reduced to 1073 based on inclusion-exclusion criteria. The composite outcome was observed more frequently in tocilizumab-users, but there was a significant imbalance between arms in all critical parameters. Primary analyses were carried out in 348 patients (174 in each arm) after exact PS matching according to gender, ferritin, and procalcitonin. Logistic regression models revealed that tocilizumab significantly reduced the intubation or death (OR 0.40, p = 0.0017). When intubation is considered alone, tocilizumab-users had > 60% reduction in odds of intubation. Multiple imputation approach, which increased the size of the matched patients up to 506, provided no significant difference between arms despite a similar trend for intubation alone group. Analysis of this retrospective cohort showed more frequent intubation or death in tocilizumab-users, but PS-matched analyses revealed significant results for supporting tocilizumab use overall in a subset of patients matched according to gender, ferritin and procalcitonin levels.

Objectives: Paranasal sinus mucocele is a benign cystic lesion, lined with respiratory epithelium and filled with mucoid secretions, which is generally seen in the ethmoid or frontal sinuses. Inflammation, trauma, fibrosis, neoplasm, and previous surgery play a role in etiology. Treatment of this condition requires marsupialization and drainage. Endoscopic surgery is the gold standard procedure. Methods: A 2-year-old boy was referred to our clinic with a diagnosis of bilateral ethmoid mucocele causing proptosis in the right eye. General clinical examinations and routine blood analysis revealed normal health condition of the patient and comorbidities such as cystic fibrosis (CF) and/or ciliary dysfunction were excluded. The patient was operated with an endoscopic endonasal approach. Results: As far as we know, our article reports the first case of bilateral ethmoidal sinus mucocele with no underlying comorbidity, such as cystic fibrosis or ciliary dyskinesia. Conclusions: Children are rarely affected by mucocele and if present at early age, there is usually an underlying cause. In pediatric patients with signs and symptoms suggestive of a mucocele, it is important to rule out other benign and malignant paranasal sinus pathologies. Marsupialization and drainage via endoscopic endonasal approach is the preferred treatment modality.

Objective: To investigate computerized tomography (CT) data of patients who needed revision surgery for chronic rhinosinusitis. Material and Methods: 83 patients who underwent revision endoscopic sinus surgery by the senior author due to recurrent and/or persistent chronic rhinosinusitis were included in this study. The following data were obtained from preoperative CT scans and recorded for each side of every patient: recurrent polyposis, incomplete uncinectomy, retained agger nasi cell, lateralization of middle turbinate, recirculation phenomenon, maxillary antrostomy stenosis, incomplete anterior and posterior ethmoidectomy, scarring at the frontal recess, sphenoid ostium stenosis, or novel onset sphenoid disease. Results: Based on our findings, septal deviation caused inadequate posterior ethmoidectomy, while incomplete uncinectomy increased the risk of frontal sinus disease. Conclusions: We suggest that septum deviation may cause insufficient visualization, while incomplete uncinectomy may prevent adequate intervention to the frontal sinus and these subsequently play a role in ESS failure.

OBJECTIVE:This study aims to compare the effects of different surgical techniques for congenital choanal atresia (CCA), and particular emphasis is given to the analysis of the factors affecting the surgical outcome. The necessity for revision surgery and surgical outcomes were retrospectively investigated in patients undergoing revision surgery according to a recently proposed classification system.MATERIAL AND METHOD:A retrospective study was conducted on patients operated for CCA between January 2007 and December 2018 at a university hospital. Data in the medical records, including patient age when the initial surgery was performed, gender, additional anomalies and medical conditions, the duration of gestation, side and type of atresia, type of surgery and need for revision surgery were reviewed.RESULTS:Forty-five patients treated for CCA in our university hospital were screened. The mean follow-up duration was 82.16 months. Revision surgery was required in 9 of 26 cases, which are included in the study (34.6%). Fourteen patients presented with bilateral CCA, while 12 were unilateral cases. Sixteen patients (61.5%) had comorbid medical conditions. While the removal of vomer and mucoperiosteal flap use affects successful surgical repair, no differences were observed in choanal atresia type, laterality, use of stent and the presence of additional medical conditions.CONCLUSION:The most important factors affecting surgical success for CCA are the removal of the vomer and closure of all bare bone tissues using a mucoperiosteal flap. Use of stents provides no additional benefit, apart from preventing synechiae formation.

OBJECTIVE:We aimed to compare the clinical, epidemiological, and prognostic features of the H1N1 pandemic in 2009 and the severe acute respiratory syndrome coronavirus 2 pandemic in 2020.METHODS:This retrospective study involved subjects from seven centers that were admitted and found to be positive for H1N1 or COVID-19 real-time polymerase chain reaction test.RESULTS:A total of 143 patients with H1N1 and 309 patients with COVID-19 were involved in the study. H1N1 patients were younger than COVID-19 ones. While 58.7% of H1N1 patients were female, 57.9% of COVID-19 patients were male. Complaints of fever, cough, sputum, sore throat, myalgia, weakness, headache, and shortness of breath in H1N1 patients were statistically higher than in COVID-19 ones. The duration of symptoms until H1N1 patients were admitted to the hospital was shorter than that for COVID-19 patients. Leukopenia was more common in COVID-19 patients. C-reactive protein levels were higher in COVID-19 patients, while lactate dehydrogenase levels were higher in H1N1 ones. The mortality rate was also higher in H1N1 cases.CONCLUSIONS:The severe acute respiratory syndrome coronavirus 2 pandemic is a major public health problem that continues to affect the world with its high rate of contagion. In addition, no vaccines or a specific drug for the benefit of millions of people have been found yet. The H1N1 pandemic is an epidemic that affected the whole world about ten years ago and was prevented by the development of vaccines at a short period. Experience in the H1N1 pandemic may be the guide to prevent the COVID-19 pandemic from a worse end.

Background: In SARS-COV-2 disease, anosmia and dysgeusia are symptoms that are usually detected together. In our study, it was aimed to investigate the impairments in the sense of smell and taste in our COVID-19 patients and to determine the sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of the parameters accompanying this impairment. Methods: The study was conducted retrospectively in patients with positive COVID-19 rtRT-PCR test, whose complaints of smell-taste dysfunction were questioned in 6 centers. Result: 8238 patients questioned for the impaired sense of smell and taste were included in our study. 1756 (21.3%) patients had smell-taste dysfunction. Smell dysfunction started 2.9±2.3 days after the onset of COVID-19 specific symptoms and continued for 9.4±2.7 days. There was a positive correlation between the disturbance of smell and taste and the complaints of fever, sore throat, myalgia, weakness, headache, and negative correlation the complaints of cough. 218 (12.4%) of the patients with smell-taste dysfunction stated that this complaint negatively affected their quality of life. Conclusion: Smell-taste dysfunction is more common, especially with the symptoms of upper respiratory tract infection of COVID-19, and has a positive correlation with fever, sore throat, myalgia, weakness, and headache, affects the quality of life of patients and improves in about 10-14 days. © 2021 A. CARBONE Editore. All rights reserved.

Background/Aims: The COVID-19 disease, which was declared epidemic by the WHO, is a global emergency public health problem. Patients with extrapulmonary symptoms are the group of patients who should be considered for person-to-person transmission in the community. In our study, it was aimed to investigate the characteristics of patients with COVID-19-related diarrhea symptoms. Materials and Methods: The study was conducted retrospectively in CO­VID-19 rtRT-PCR-positive patients in 5 medical centers. Three or more loose/liquid stools per day or increased number of defecations compared to normal defecation were defined as diarrhea. The patients were analyzed in 2 groups as those with and without diarrhea. Results: One thousand eighty-six patients were included in the study. Seventy-eight (7.2%) of the patients had diarrhea. Diarrhea was watery in 54 (69.2%) patients while with blood and mucus in 18 (23.1%) patients. Diarrhea continued for an average of 5.2 ± 1.6 (2–11) days. The clinical and laboratory findings of patients with diarrhea were more serious than those without diarrhea. Diarrhea is more common in the elderly and people with comorbid disease, and patients with diarrhea had higher CMI score and CRP and higher complaints of fever, cough, shortness of breath, myalgia, and fatigue. Conclusions: The presence of diarrhea should indicate a suspected COVID-19 infection and suggest testing for early diagnosis of the disease. It should be kept in mind that the course of the disease may be more severe in these patients, and precautions should also be taken in terms of fecal transmission during discharge.

Objective The primary goal of this study was to evaluate the association between olfactory dysfunction or taste impairment and disease severity and radiological findings in coronavirus disease-2019. The secondary goal was to assess the prevalence, severity and course of olfactory dysfunction or taste impairment in patients with coronavirus disease 2019. Method This prospective observational cohort study evaluated patients hospitalised with coronavirus disease 2019 between April 1 and 1 May 2020. Olfactory dysfunction and taste impairment were evaluated by two questionnaires. Chest computed tomography findings and coronavirus disease-2019 severity were assessed. Results Among 133 patients, 23.3 per cent and 30.8 per cent experienced olfactory dysfunction and taste impairment, respectively, and 17.2 per cent experienced both. The mean age was 56.03 years, and 64.7 per cent were male and 35.3 per cent were female. No statistically significant association was found between olfactory dysfunction (p = 0.706) and taste impairment (p = 0.35) with either disease severity or chest computed tomography grading. Conclusion Olfactory dysfunction or taste impairment does not have prognostic importance in patients with coronavirus disease 2019.

Objective Spondylodiscitis is an important clinical a problem requiring serious approaches. In this study, we sought to raise awareness by examining the epidemiology and laboratory, clinical, and radiological findings of spondylodiscitis, which sometimes has a delayed diagnosis and which can be difficult to treat. Methods In total, 343 patients with spondylodiscitis were included in the study. Results The patients were classified as having as pyogenic (n = 153, 44.6%), brucellar (n = 138, 40.2%), or tuberculous (n = 52, 15.2%) spondylodiscitis. Meanwhile, 281 patients underwent magnetic resonance imaging, 71 underwent computed tomography, and 17 underwent scintigraphy for diagnosis. The rates of involvement at more than two segments and paraspinal abscess were significantly higher in tuberculous spondylodiscitis. However, disc involvement was significantly more common in brucellar and pyogenic spondylodiscitis. Conclusion The incidence of spondylodiscitis has increased substantially, especially in the young population. The invasive procedures and high rate of culture negativity make the diagnosis difficult. Therefore, clinical and radiological findings are useful in the diagnosis of spondylodiscitis. Despite the high rate of culture negativity, every effort should be made to identify the causative organism using invasive methods.

Introduction: Immunocompromised patients, SARS-CoV-2 infection might have a more severe course and may cause pneumonia quicker, compared to normal hosts. The presence of comorbid diseases increases this risk even further. In our study, we aimed to determine the clinical course and severity of COVID-19 in immunocompromised patients. Materials and method: Our study was carried out between 01 April 2020 and 01 October 2020 in 4 centers as a retrospective case-control study. Firstly, COVID-19 positive patients with previous immunosuppressive disorder diagnosis or patients who use immunosuppressive medicines for any reason were enrolled in the case group. COVID-19 rtRT-PCR positive patients who have no previous immunosuppressive disorder diagnosis and who are not on any immunosuppressive medicines were enrolled in the control group. Definitive statistical analysis was conducted for all of the researched variables. Results: 156 immunocompromised patients with COVID-19 diagnosis were enrolled in the case group of patients and 312 non-immunocompromised patients with COVID-19 diagnosis were enrolled in the control groups. In immunocompromised patients, CMI scores, the prevalence of hypertension, respiratory rate/minute, shortness of breath, and weakness were high and complaints about fever were low. In these patients, CRP, D-dimer, ferritin, and troponin values were high at statistically significant levels and lymphocyte values were low. The need for intensive care for immunocompromised patients was 2.93 times more and nosocomial infections and thrombotic complications occurred more frequently. Mortality was 3.57 times higher in immunocompromised patients. Conclusion: SARS-CoV-2 has a more severe course in immunocompromised patients. However, when evaluating these patients, whether or not the underlying diseases are under control should be evaluated and thrombotic complications and nosocomial infections should be taken into account. © 2021 A. CARBONE Editore. All rights reserved.