This case report presents a case of unusual diffuse cardiac uptake (Peruguni 3: uptake greater than rib uptake) on a 99mTc-methylene diphosphonate bone scan in an 83-year-old patient with metastatic prostate cancer which is almost resolved (Peruguni 1: uptake less than rib uptake) on a follow up bone scan about 4.4 months later. Laboratory values and imaging were negative for cardiac amyloidosis and a thorough review of the patient's medical chart did not reveal any other possible causes, pharmacologic or otherwise, thus deeming the uptake non-specific. While increased non-specific cardiac 99mTc-diphosphanate uptake has been previously reported in elderly prostate cancer patients, possibly attributable to asymptomatic atherosclerosis, this explanation is unlikely considering that the uptake almost resolved within a relatively short period of time. It is clinically important to rule out amyloidosis in patients with increased cardiac uptake on bone scans. However, we believe that clinicians should also consider the possibility of non-specific uptake as a cause for cardiac uptake on bone scan, which would only require follow-up rather than medical intervention.

Pancreatic exocrine carcinoma (PEC) is a lethal malignancy with high mortality rates because of its aggressive nature and frequent late-stage diagnosis. When histopathological diagnosis becomes unfeasible because of patient deterioration, clinicians must rely on clinical, biochemical, and radiological findings. This case report describes a 78-year-old woman with aggressive PEC visualized through 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography/computed tomography. The imaging revealed an intensely hypermetabolic head mass, hepatic superscan, and hypermetabolic abdominal lymphadenopathy. Despite strong clinical indicators suggesting stage IV PEC, rapid disease progression and patient demise precluded histopathological confirmation, emphasizing the poor prognosis associated with hepatic superscan in this context.

A 40-year-old woman with Graves' disease underwent a technetium-99m pertechnetate thyroid scan showing two distinct foci of increased uptake, one just inferior to the right thyroid lobe and another further down in the right supraclavicular region. The foci were subsequently identified by contrast-enhanced computed tomography and interpreted as grade 4 thyrothymic remnants, both separate from the genuine thyroid. Detection of such variants by thyroid scintigraphy and anatomic imaging in such patients is important to minimize the risk of persistent/recurrent hyperthyroidism after surgery.

e18016 Background: Chronotherapy in cancer is optimizing the administration time of anti-cancer treatment according to circadian rhythm and cellular phase to improve the efficacy against tumor cells while decreasing side effects on normal cells. Several randomized controlled trials (RCT) evaluated chronotherapy of chemotherapy (chrono-chemotherapy: time-specific infusions) and/or radiotherapy (chrono-radiotherapy: morning radiotherapy) in various cancers and reported improved treatment efficacy and reduced toxicity. However, the effect of chronotherapy in HNC treatment is unclear as there are no prior systematic reviews reported. Therefore, this systematic review summarizes available clinical evidence on the effect of chrono-chemotherapy (CCT) and chrono-radiotherapy (CRT) on treatment response and adverse events in HNC adult patients. Methods: We conducted a systematic search using Medical Subject Headings (MeSH) in four online databases (OVID, Embase, CINAHL and Scopus), and 6078 articles identified were published in English between the databases' inception date and June 30, 2022. We included original peer-reviewed retrospective and prospective human studies investigating CCT and/or CRT versus conventional treatments in HNC patients. We excluded articles that contained no abstract, were unrelated to HNC, were pre-clinical and case reports, or did not include time-specific interventions in their methods. Results: 16 studies were finally included. Overall, studies were heterogenous in demographics, study design, intervention, and outcome measures, thus meta-analysis could not be performed. Nine studies (RCT = 3, Non-RCT = 2 & Retro = 4) investigated CRT. Squamous cell carcinoma (SCC) was mainly reported as the primary tumor (stage I-II). 7/9 studies reported a significant reduction in the incidence of oral mucositis (Grade ≥3) in the CRT group as opposed to conventional radiotherapy (RT) groups (p < 0.05). In contrast, treatment response was investigated in 4/9 studies and was insignificant (p > 0.05). Seven studies (RCT = 5 & Retro = 2) investigated CCT in patients diagnosed with SSC (stage II-IV). All included studies had concurrent RT. Different chemotherapeutic agents were used in combinations or as a single agent, namely Cisplatin, 5- Fu, Paclitaxel and Docetaxel. CCT groups in all studies achieved a significant reduction in Nausea & Vomiting (Grade ≥3), while a significant reduction in Leukopenia & Thrombocytopenia (Grade ≥3) was reported in 2 studies only (p < 0.05). Treatment response (OS and PFS) was not significantly different (p > 0.05) between both groups except 2 studies reported significantly higher ORR in chronotherapy groups (p < 0.05). Conclusions: CCT and CRT in HNC treatment in most studies provided evidence of toxicity reduction while treatment response was maintained. However, large multicentric randomized controlled studies with standardized protocols and optimized designs are still needed.

The ongoing wars in various parts of the world continue to shed light on the importance of medical workers and volunteers in areas such as Gaza, Sudan, and Ukraine, while shocking us by their vulnerability to harm and death in these conflicts. The exponential increase of the number of medical workers harmed in the ongoing conflicts is calling us to action. For example, in the past six months of the Gaza war, at least 484 medical workers and volunteers were killed due to military attacks on health care facilities according to an April 3rd report by the UN Office for the Coordination of Humanitarian Affairs1.Hundreds of physicians, nurses, and other medical workers from all over the world have volunteered to serve in what has remained of the hospitals and clinics in Gaza, risking their lives every day and every hour. Although there are several motives behind medical volunteerism in war theaters, including patriotic, religious, and often purely humanistic motives, the volunteers end up serving in life threatening hot zones. Their loved ones in their homelands live in anguish during their absence with the anticipation that they may hear the worst at any moment. Most of us celebrate these volunteers as heroes. They are highly respected in their home countries and internationally. Their reports on the catastrophic healthcare conditions inform us of the dire need to help the innocent civilian victims of the conflicts who are often women and children as well as the elderly and the sick.Physicians and their allied medical professionals are life savers not only during peacetime, but more importantly during times of devastating wars with massive civilian casualties and extremely limited resources within health facilities. As the numbers from Gaza above show, a disproportionate number of these medical volunteers and workers have been killed or injured.The medical volunteers and workers deserve better protection during wartime, regardless of their motives to serve, because they truly try to save lives under difficult conditions; altruistically speaking, they represent the best of us; and they epitomize the very essence of what the medical profession is about.We believe that it is time for general medical journals, such as ours to unequivocally call for the international protection of medical volunteers and workers and denounce attacks on civilian healthcare infrastructure that cause harm to the medical workers and volunteers and call for their absolute cessation.

BackgroundThe Jordanian healthcare system has evolved over the past decades expanding its services, technological, and educational resources. A comprehensive view of this system is lacking. The objective of this report is to describe the structure of the Jordanian healthcare system, the challenges facing it, and the current and recommended health policies.Materials and methodsThis study reviewed the current status of the Jordanian healthcare system. The following parameters were analyzed: health indicators, infrastructure, human resources, insurance system, pharmaceutical expense, health education system, and medical tourism. Data were collected from various relevant official institutions and related published literature.ResultsJordan has a young population with a median age of 23.8 years. Life expectancy is 78.8 years for females and 77.0 years for males. The Jordanian healthcare system is divided into three major categories: (1) Governmental Insurance (i.e., the Ministry of Health (MOH), the Royal Medical Services (RMS) and semi-governmental insurance); (2) Private Insurance; and (3) Refugee Insurance, including the United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA) and the United Nations High Commissioner for Refugees (NHUR). The Governmental Insurance covers 64.30% of the total population. Health expenditure is 6.37% of the gross domestic product (GDP). Pharmaceutical expenses make up 26.6% of the total national healthcare budget. Human resource assessment shows a high ratio of medical staff per 10.000 inhabitants, especially concerning physicians (31.7), dentists (7.9), and pharmacists (15.1). However, the ratio of nursing staff per 10.000 inhabitants is considered low (37.5). The Hospital bed/1000 population ratio is also relatively low (1.4). Healthcare accreditation is implemented through the Joint Commission International (JCI) accreditation which was achieved by 7 hospitals and by the National Health Care Accreditation Certificate (HCAC) achieved by 17 hospitals and 42 primary healthcare centers. Postgraduate medical education covers almost all medical and surgical fields. Medical tourism is currently well-established.ConclusionsAssessment of the Jordanian healthcare system shows high ratios of physicians, dentists, and pharmacists but a low ratio of nursing staff per 10.000 inhabitants. The hospital bed/1000 population ratio is also relatively low. Pharmaceutical expenses are significantly high and medical tourism is well-developed.

Metabolic syndrome is a major public health problem worldwide and an independent predictor of cardiovascular disease in patients with type 2 diabetes (T2DM). This study aimed to determine the prevalence of metabolic syndrome and its individual components among Jordanian patients with T2DM. A cross-sectional design was conducted among T2DM patients at the National Center for Diabetes, Endocrinology and Genetics in Jordan. Data were collected using a structured questionnaire and clinical data extracted from medical records. The National Cholesterol Education Program-Adult Treatment Panel III (ATP III) and International Diabetes Federation (IDF) diagnostic criteria were used to define metabolic syndrome. Among 1017 participants aged between 22 and 90 years, the overall prevalence of IDF defined metabolic syndrome was 84.2% (72.5% and 96.2% among males and females, respectively). Using ATP III criteria, overall prevalence was 79.1% (77.4% and 80.8% among males and females, respectively). Advancing age, female gender, nonadherence to a diet regimen, sedentary lifestyle or insufficient physical activity, and duration of diabetes ≥10 years were significantly associated with increased odds of metabolic syndrome, regardless of the definition used. Current smoking status and family history of cardiovascular diseases were significantly associated with increased likelihood of ATP III defined metabolic syndrome. The prevalence of metabolic syndrome among Jordanian patients with T2DM is extremely high. The main modifiable risk factors of metabolic syndrome among these patients include nonadherence to a diet regimen, insufficient physical activity, being overweight/obese and smoking. It is recommended that healthcare providers counsel patients on the importance of maintaining physical activity, smoking cessation, and adherence to a diet regimen.

Radiation emergencies involving high doses of nuclear radiation pose significant risks from exposure to ionizing radiation in various scenarios. These situations include transportation accidents involving radioactive materials, occupational exposure, nuclear detonations, dirty bombs, and nuclear power plant accidents. In addition to the immediate risks of acute radiation syndrome (ARS) and related diseases, long-term exposure can increase the risk of other health issues such as cardiovascular disease and cancer. Vulnerable populations, including pregnant women and children, face particular concern due to potential impacts on their health and the health of unborn babies. The severity of ARS depends on several factors such as radiation dose, quality, dose rate, exposure uniformity, and individual biological responses. Bioindicators are biological responses or markers that help assess the severity and effects of radiation exposure on an individual. Bioindicators can include physical symptoms such as nausea, vomiting, and diarrhea, or laboratory tests such as changes in blood cell counts and gene expression that can help in assessing and treating exposed individuals. Additionally, early prodromal symptoms such as vomiting, diarrhea, and erythema can provide important clues for diagnosis and treatment. Developing a comprehensive plan for radiation emergencies is vital for safeguarding public health, infrastructure, and the environment. First responders play a critical role in establishing safety perimeters, triage, and coordination with various stakeholders. Education and training are essential for medical personnel and the public. This article provides general recommendations and identifies challenges to effective radiation emergency preparedness and response.

The “publish or perish” culture in academia has intensified trends in medical research, particularly around artificial intelligence (AI) and machine learning. This letter highlights how the pressure to publish positive findings during research trends, such as artificial intelligence in medicine, exacerbates the replication crisis. Issues like data leakage and lack of cross-institutional validation in AI models, particularly in clinical radiology, raise concerns about their reliability. The letter urges authors, reviewers, and editors to enforce rigorous standards to ensure reproducibility and safeguard the integrity of medical research.

2-Deoxy-2-[ 18 F]fluoro- d -glucose PET/computed tomography ([ 18 F]FDG PET/CT) has proven to be a sensitive method for the detection and evaluation of hematologic malignancies, especially lymphoma. The increasing incidence and mortality rates of leukemia have raised significant concerns. Through the utilization of whole-body imaging, [ 18 F]FDG PET/CT provides a thorough assessment of the entire bone marrow, complementing the limited insights provided by biopsy samples. In this regard, [ 18 F]FDG PET/CT has the ability to assess diverse types of leukemia The utilization of [ 18 F]FDG PET/CT has been found to be effective in evaluating leukemia spread beyond the bone marrow, tracking disease relapse, identifying Richter’s transformation, and assessing the inflammatory activity associated with acute graft versus host disease. However, its role in various clinical scenarios in leukemia remains unacknowledged. Despite their less common use, some novel PET/CT radiotracers are being researched for potential use in specific scenarios in leukemia patients. Therefore, the objectives of this review are to provide a thorough assessment of the current applications of [ 18 F]FDG PET/CT in the staging and monitoring of leukemia patients, as well as the potential for an expanding role of PET/CT in leukemia patients.

Trabecular bone score (TBS) assesses trabecular microarchitecture at the lumbar spine and was shown to improve fracture risk prediction compared to bone mineral density (BMD) alone. We investigated whether lumbar degenerative changes (DC) affect TBS and TBS-adjusted 10-year fracture risk assessment (tool) (FRAX) estimates. All patients who underwent BMD and TBS measurements via dual-energy X-ray absorptiometry at our institution between 1/7/2020 and 1/10/2020 were retrospectively evaluated. We identified all patients who had DC in 1 or 2 vertebrae (out of L1–L4) with a BMD T score > 1 unit higher than the remaining 2 to 3 adjacent vertebrae. TBS and BMD were compared between the vertebrae with and without DC. Change in TBS as well as FRAX estimates for major osteoporotic (MOP) and hip fractures after exclusion of the degenerative vertebrae were also determined. Of the 356 eligible patients, 94 met the inclusion criteria. The mean TBS of vertebrae without DC was not significantly different from that of L1 to L4 (1.31 ± 0.12 vs 1.32 ± 0.12, respectively, P = .11). The FRAX estimates after exclusion of the degenerative vertebrae were statistically significantly higher than for L1 to L4 for both MOP and hip fractures ( P = .04 and P = .01, respectively). However, the differences were very small. The mean 10-year MOP FRAX estimate after exclusion of degenerative vertebrae was 7.67% ± 4.50% versus 7.55% ± 4.36% for L1 to L4 and the mean 10-year hip FRAX estimate after exclusion of degenerative vertebrae was 2.06% ± 2.01% versus 2.02% ± 1.98% for L1 to L4. Lumbar DC have a statistically significant but only small effect on TBS-adjusted FRAX making it unnecessary to exclude the degenerative vertebrae when computing TBS.

Prostate cancer (PC) and colorectal cancer (CRC) are two of the leading causes of cancer-related mortality. The incidence of synchronous neoplasms in patients with CRC is increasing, though synchronous PC and CRC remains a rare occurrence in clinical practice. Early diagnosis, accurate staging, and characterization of tumors are essential for selecting patient-tailored therapy. The origin of metastatic disease in synchronous cases presents a challenge for conventional imaging modalities, but advances in molecular imaging have addressed this limitation. Positron emission tomography/computed tomography (PET/CT) is now the preferred modality for assessing synchronous cases. The authors present a 72-year-old male patient with the rare occurrence of two coexisting primary cancers. At first, fluorine-18 fluorodeoxyglucose ( 18 F-FDG) PET/CT detected the first colorectal primary tumor extension along with evidence of heterogeneous 18 F-FDG activity within an enlarged prostate, warranting further evaluation. Subsequently, gallium-68 prostate-specific membrane antigen ( 68 Ga-PSMA) PET/CT imaging revealed the second prostate primary cancer with evidence of bone metastases. Adoption of a dual PET/CT approach in cases where biopsy is impractical can achieve accurate staging results during the initial diagnostic workup.

BACKGROUND:Different variables have been used to predict the academic performance of students in medical schools. The aim of this study was to assess the effect of demographics, admission system, and high-school background on the academic performance of medical students.METHODS:We conducted this longitudinal cohort study on 808 students admitted to the Faculty of. Medicine at the University of Jordan (Amman, Jordan), in the years 2012 and 2013. Admission pathway, and academic performance data were collected and analyzed.RESULTS:A total of 808 students [i.e., 426 (52.7%) females, and 382(47.3%) males] were identified. Admitted students were holding 17 different types of high school degrees, and were accepted through 6 different quota pathways (open competition [National unified admission], underprivileged ["Makrumah"], parallel, children of university staff, international students, and others). Students admitted through the open competition and the underprivileged quota(Makrumah) were more likely to graduate on time and had higher graduation grades while students admitted through the parallel, international and others quota were more likely to fail and had lower graduation grades. Regarding highs school degrees, the students that were more likely to graduate were those with IB and the Jordanian high school degrees. The highest graduation GPA was for IB students followed by SAT, IGCSE as well as Jordanian and Syrian high school degrees respectively. IB, Jordanian, Kuwaiti and IGSC high school grades were significantly correlated with the graduation GPA.CONCLUSIONS:Admission criteria such as type of high school degree and grades as well as admission pathways can predict the likelihood to graduate and the graduation GPA of medical students. Open competition and underprivileged admission pathways as well as IB, IGCSE and Jordanian high school degrees seem to be better predictors of student performance in the medical school.

DTC accounts for the majority of endocrine tumors. While the incidence of thyroid cancer has been increasing globally over the past few decades, papillary thyroid carcinoma (PTC) generally shows an excellent prognosis, except in cases with aggressive clinicopathological features. This study aimed to assess the 5- and 10-year overall survival (OS) and progression-free survival (PFS) of 528 Arabic patients diagnosed with primary DTC from 1998 to 2021. Additionally, the study aimed to analyze the impact of various factors on both OS and PFS. An univariable survival analysis was conducted using Kaplan–Meier curves. The 5- and 10-year OS for patients with DTC have exceeded 95%. Additionally, PFS showed very good rates (ranging between 96.5 and 85% at 5 and 10 years, respectively). Age, male gender, risk of recurrence, and distant metastasis were identified as the main negative prognostic factors for both OS and PFS, while RAI treatment was found to be a significant factor in improving OS. Moreover, adherence to the King Hussein Cancer Center’s (KHCC) CPG demonstrated significant improvement in PFS. These findings highlight common prognostic factors and favorable outcomes in Arabic patients with DTC treated at a tertiary cancer center using standard of care approaches.

18F-FDG-PET/CT is now an integral part of the workup and management of patients with Hodgkin's lymphoma (HL). PET/CT is currently routinely performed for staging and for response assessment at the end of treatment. Interim PET/CT is typically performed after 1-4 of 6-8 chemo/chemoimmunotherapy cycles ± radiation for prognostication and potential treatment escalation or de-escalation early in the course of therapy, a concept known as response-or risk-adapted treatment. Quantitative PET is an area of growing interest. Metrics such as the standardized uptake value (SUV), metabolic tumor volume, total lesion glycolysis, and their changes with treatment are being investigated as more reproducible and, potentially, more accurate predictors of response and prognosis. Despite the progress made in standardizing the use of PET/CT in lymphoma, challenges remain, particularly with respect to its limited positive predictive value. This review highlights the most relevant applications of PET/CT in HL, its strengths and limitations, as well as recent efforts to implement PET/CT-based metrics as promising tools for precision medicine. Finally, the value of PET/CT for response assessment to immunotherapy is discussed.

PURPOSE:Skin cancers are among the commonest cancers worldwide, and the incidence of melanoma and non-melanoma skin cancer (NMSC) continues to rise worldwide. However, there are no comprehensive reports on skin cancer incidence in Jordan during the past two decades. This report investigates the incidence of skin cancers in Jordan, in particular their time trends for the period 2000-2016.MATERIALS AND METHODS:Data on malignant melanomas (MMs), squamous cells carcinomas (SCCs), and basal cell carcinomas (BCCs) were extracted from the Jordan Cancer Registry for the period between 2000 and 2016. Age-specific and overall age-standardized incidence rates (ASIRs) were computed.RESULTS:Two thousand seventy patients were diagnosed with at least one BCC, 1,364 with SCC, and 258 with MM. ASIRs were 28, 19, and 4 per 100,000 person-years for BCC, SCC, and MM, respectively. The BCC:SCC incidence ratio was 1.47:1. The risk of men developing SCCs was significantly higher than women (relative risks [RRs], 1.311; 95% CI, 1.197 to 1.436), but significantly lower for BCCs (RR, 0.929; 95% CI, 0.877 to 0.984) or melanomas (RR, 0.465; 95% CI, 0.366 to 0.591). Persons older than 60 years were at a significantly higher risk of developing SCCs (RR, 1.225; 95% CI, 1.119 to 1.340) or melanomas (RR, 2.445; 95% CI, 1.925 to 3.104), but at a significantly lower risk of developing BCCs (RR, 0.885; 95% CI, 0.832 to 0.941). The overall incidence rates of SCCs, BCCs, and melanomas increased over the 16-year study period, but this was not statistically significant.CONCLUSION:To our knowledge, this is the largest epidemiologic study regarding skin cancers in Jordan and in the Arab world. Despite low incidence rates in this study, rates are higher than reported regional figures. This is likely due to standardized, centralized, and mandatory reporting of skin cancers, including NMSC.