AIM:To carried out a comparative analysis of the risk of complications and oncological results of repeat partial nephrectomy and radical nephrectomy in patients with local recurrence after previous organ-sparing procedures.MATERIALS AND METHODS:Retrospective and prospective data of 64 patients with local recurrence of kidney cancer after nephron-sparing procedures. who underwent surgical treatment in the department of oncourology of the National Medical Research Center of Oncology named after N.N. Blokhin in the period from 2000 to 2022. A total of 37 (57.8%) patients of the main group underwent repeat partial nephrectomy, while in 27 (42.2%) patients in the control group a radical nephrectomy was done. Median follow-up was 35 (3-131; Q1-Q3: 13-57) months. Both groups were comparable in terms of demographic and clinical characteristics (p>0.05). The median time to detect relapse after previous partial nephrectomy was 24 (2-172) months.RESULTS:Complications were noted in 8 (21.6%) patients after repeat partial nephrectomy, compared to 29.6% in the control group (n=8) (p=0.563). A comparative analysis revealed a significant advantage in overall survival in patients of the main group (p=0.042). There were no significant differences between groups in cancer-specific and disease-free survival (p=0.369 and p=0.537, respectively).CONCLUSION:Repeat partial nephrectomy for local recurrence of kidney cancer leads to an increase in overall survival compared to radical nephrectomy, in the absence of significant differences in cancer-specific and relapse-free survival.

Purpose of the study: analysis of our experience in performing robotic-assisted nephron-sparing surgeries using the da robotic system. Material and Methods. The retrospective study included the first 37 consecutive patients who underwent robot-assisted partial nephrectomy from May 2020 to december 2022. Results. To assess the surgical outcomes in patients undergoing partial nephrectomy, three parameters associated with trifecta achievement were analyzed. The trifecta was assessed according to the standard criteria, whereas the quadfecta, which in addition to the trifecta included preservation of >90 % of the glomerular filtration rate (calculated according to Cockroft–Gault) in the postoperative period (3–7 days), did not assess the stage of chronic renal failure one year after surgery, thus probably demonstrating the high percentage of its achievement (54.1 %). A positive surgical margin was observed in 1 (2.7 %) patients. Warm ischemia time of more than 25 minutes was used in 8 patients (21.6 %). Complications in the postoperative period (Clavien–Dindo II and higher) were observed in 1 (2.7 %) patient. Trifecta and quadfecta rates were 78.4 % and 54.1 %, respectively. To analyze the surgeons’ experience, 37 renal cell cancer patients were divided into two subgroups with first 20 and subsequent robotic partial nephrectomies. There were no differences in gender, age and calculated RENAL value between 2 subgroups. depending on the surgeons’ experience, statistically significant differences in the duration of surgery (p=0.035) and blood loss during surgery (p=0.007) were found. Conclusion. Considering the extensive experience of surgeons in the field of laparoscopic surgery for tumors of the renal parenchyma, the outcomes of robotic partial nephrectomies performed in 37 patients seem to be satisfactory and successful. The accumulated experience of surgeons after 20 robotic-assisted nephron-sparing surgeries makes it possible to significantly reduce surgery time and blood loss. The technique of robotic-assisted partial nephrectomy requires further improvements.

Introduction. Melanoma is a malignant tumor that develops from melanocytes, has a high malignant potential and is characterized by early and aggressive metastasis. Just like with many other malignant neoplasms, melanoma can be clinically manifested by metastases in the absence of a primary focus. In the world and in Russia, there has been a steady increase in the incidence of melanoma over the past thirty years. Identifiation of the primary focus with an established diagnosis of metastases of a malignant tumor during life occurs no more than 25 % of cases. Even at autopsy, the primary focus is found on average in 15–20 % of patients, subject to a complete examination of the patient during his lifetime. The prognostic value of identifying the primary focus in melanoma remains unclear. Objective. To improve the diagnosis and treatment of patients with melanoma metastases without an identifid primary focus by assessing the signifiance of various factors, including the fact that the primary tumor was detected. Materials and methods. Since 2005 to 2019 at the National Medical Research Centre of Oncology n. a. N. N. Blokhin (Moscow, Russia) 196 patients with metastases of melanoma in the lymph nodes were observed and treated. Patient medical history were analyzed retrospectively and prospectively. All patients were followed up on an ambulatory after treatment. The inflence of the main clinical and morphological characteristics on the survival rates of patients was assessed. Patients with a morphologically confimed diagnosis of melanoma metastases in

Aim. To perform comparative analysis of functional outcomes of repeat kidney resection and radical nephrectomy in patients with local cancer recurrence after previous organ-sparing surgeries. Materials and methods. Data on 64 patients who underwent surgical treatment at the Oncourology Department of the N.N. Blokhin National Medical Research Center of Oncology between 2000 and 2022 due to local kidney cancer recurrence after previous nephron-sparing surgeries were retrospectively and prospectively included in the study. Among these, 37 (57.8 %) patients underwent repeat kidney resection (treatment group) and 27 (42.2 %) patients underwent radical nephrectomy (control group). The groups were matched in demographic and clinical characteristics ( р >0.05). Median diameter of recurrent tumor in the treatment and control groups was 2.5 and 3.0 cm, respectively (95 % confidence interval 2.0–3.0 cm; Q 1 –Q 3 2.4–4.0 cm). This difference was statistically significant ( р = 0.012), but not clinically. Median follow-up duration was 35 (3–131) months (Q 1 –Q 3 13–57 months). Results. Repeat nephron-sparing surgeries correlated with lower decrease in kidney function compared to organ-resecting surgical treatment. In the early postoperative period, decrease in calculated glomerular filtration rate per the CKD-EPI formula compared to baseline after re-resection and nephrectomy was 16 and 32 % ( р = 0.010); long-term, it was 8 ± 41 and 45 ± 22 % ( р <0.001), respectively. Complication rates in the groups were similar: 21.6 and 29.6 %, respectively ( р = 0.563). Conclusion. For local kidney cancer recurrence, repeat resection promotes preservation of kidney function without increased complication rate.

Worldwide, bladder cancer is the 7th most common cancer type in men and 11th in both sexes. The standardized by age incidence is 9.0 cases per 100.000 people among men and 2.2 cases per 100.000 people among women.The most common (>90 %) histological form of malignant epithelial tumors of the bladder is transitional cell carcinoma. Transitional cell carcinoma with squamous cell, glandular, or trophoblastic differentiation is rare. Squamous cell carcinoma comprises about 5 % of malignant epithelial bladder tumors, adenocarcinomas from 0.5 to 2.0 %. Small-cell and spindle-cell carcinomas are exceptionally rare (<0.5 %). Primary small-cell, or neuroendocrine, carcinoma is a very rare disease with incidence of <0.5 % of all bladder tumors. Presumably, small-cell carcinoma of the bladder (SCCB) is similar to small-cell carcinoma of the lung and consists of a population of a relatively homogenous cells with scant cytoplasm and hyperchromatic nuclei; extensive necrosis is also common. Histogenesis of SCCB is unknown, but there are 2 hypotheses on development of cancerous cells: from rare neuroendocrine cells and multipotent stem cells of the bladder.Prognosis is poor for most patients: in the report by I. Trias et al., median survival was less than 1 year, long-term survival for 5 or more years was extremely rare. In more than a half of patients, metastatic lesions of the regional lymph nodes, liver, or bones were observed during diagnosis.In the Russian literature, the problem of SCCB remains insufficiently investigated due to low incidence of this morphological type. Treatment is mostly administered empirically.

The aim of the study is to assess the positive and negative prognostic factors of survival in patients with bilateral synchronous renal cancer (BRC). Materials and methods. The study was conducted on the basis of N.N.Blokhin National Medical Research Center of Oncology of the Ministry of Health of the Russian Federation. Cohort of patients with the synchronous BRC consisted of 160 patients between 1996 and 2014. All patients after finishing treatment were observed on an ambulatory basis during the period from 11 months to 12 years (median follow-up 81.05±46.7 months). We studied factors affecting 5-year survival rate, both positive and negative. Statistical analysis of the obtained results carried out using generally accepted statistical methods such as SPSS 23.0 - block of programs for Windows. Results. In case of synchronous BRC in 2/3 (65%) of patients the first kidney was operated on using organ-preserving surgery, in 1/4 of patients (n=21, 26.2%) both kidneys were operated on using organ-preserving surgery. In case of synchronous renal cancer the best results of survival, but without statistical significance (p=0.112) had patients with bilateral renal cancer who operated on using organ-preserving surgery. The 10-year overall survival in this group of patients was 90.5% in comparison with 62.5% - when nephrectomy was performed on the first stage and 76.4% in patients who had nephrectomy performed because of the renal cancer in the second kidney. Conclusions. The main factors affecting the 5-year survival rate of patients with synchronous BRC were: smoking, primary tumor size, age and type of surgery.

Цель исследования - оценить факторы положительного и отрицательного прогноза выживаемости больных синхронным двусторонним раком почек (ДРП). Материалы и методы. Исследование проведено на базе ФГБУ «НМИЦ онкологии им. Н.Н.Блохина» Минздрава России. Когорта больных с 1996 по 2014 г. с диагнозом «синхронный ДРП» состоит из 160 пациентов. Все пациенты после окончания лечения наблюдались амбулаторно в период от 11 мес до 12 лет (медиана наблюдения 81,05±46,7 мес). Оценивались факторы, которые влияют на 5-летнюю выживаемость, как положительные, так и отрицательные. Статистический анализ полученных результатов проводили с помощью общепринятых статистических методов при использовании блока программ SPSS 23.0 для Windows. Результаты. При синхронном ДРП 2/3 (65%) больных по поводу рака первой почки было выполнено органосохраняющее хирургическое вмешательство, 1/4 пациентов (n=21, 26,2%) по поводу рака обеих почек удалось выполнить органосохраняющие операции. При синхронном раке почек наилучшие, хотя и не достигшие статистической достоверности (р=0,112) результаты выживаемости имели больные, которым удалось по поводу опухолей обеих почек выполнить органосохраняющие хирургические вмешательства. Десятилетняя общая выживаемость этой группы больных составила 90,5% по сравнению с 62,5% при выполнении на первом этапе нефрэктомии и 76,4% у больных, которым по поводу опухоли второй почки была выполнена нефрэктомия. Выводы. Основными факторами, влияющими на 5-летнюю выживаемость больных синхронным ДРП, являются: курение, размер первичной опухоли, возраст и вид хирургического вмешательства.

Renal cancer morbidity grows in most of the developed countries. Incidence of bilateral renal cell carcinoma, per various authors, amounts to 2–6 % of all cases of this disease. The study included 160 patients with bilateral kidney cancer who received surgical treatment at the N.N. Blokhin National Medical Research Center of Oncology in the period from 1996 to 2014. Median follow-up duration for all patients included in the analysis was 81.05 ± 46.7 months. In our study, the groups for synchronous and metachronous cancer were equal (n = 80) and constituted 3.5 % of all cases of kidney cancer. For synchronous and metachronous cancer types, the most common concomitant disease was arterial hypertension. The most common morphological variant for the first, as well as the second, kidney tumor was clear cell carcinoma. Smoking and ischemic heart disease as a concomitant pathology negatively affected relapse-free and overall survival. Overall 5-year survival for synchronous renal cancer was 84.4 ± 4.2 %, for metachronous – 64.8 ± 9.3 %.

Objective: to assess the advisability and safety of transperitoneal laparoscopic nephrectomy for renal parenchymal tumors.Subjects and methods. The investigation enrolled 163 patents with clinically localized renal parenchymal tumors that had been resected through laparoscopic (n = 81 (49.7 %)) and open (n = 82 (50.3 %) accesses). The groups of patients operated on via laparoscopic and laparotomic accesses were matched for demographic characteristics, somatic status, baseline renal function, and nephrometric signs of tumor nodules, except the involved side (7 patients in the laparoscopic group had bilateral renal tumors). Renal resection was carried out in all the patients; a contralateral kidney tumor was also removed in 7 patients with a bilateral lesion (nephrectomy and kidney resection were done in 3 and 4 patients, respectively). Histological examination verified benign tumors in 15 (9.2 %) cases, renal cell carcinoma in 148 (90.8 %), including all bilateral renal tumors [рТ1а (n = 135 (91.2 %) cases; рТ1b (n = 4 (2.7 %); рТ3а (n = 9 (6.1 %)]; according to the pT category, the distribution of patients in the laparoscopic and open resection groups was even (p = 0.586). No additional treatment was performed in any case. The median follow-up was 48.2 ± 11.8 months.Results. The use of the laparoscopic access significantly increased the frequency of intraoperative complications (6.1 and 16.0 %; p = 0.037), but failed to affect that of postoperative complications (13.0 and 18.3 %, respectively; p = 0.291) versus the open access. Laparoscopic versus conventional techniques did not cause any reduction in 5-year overall, specific, and relapse-free survival rates (93.3, 100.0, 80.0 % and 97.1, 100.0, 98.5 %, respectively; р > 0.05 for all). The rate of acute renal dysfunction and its distribution by the RIFLE classes, the rate and level of a decrease in glomerular filtration rate in the late postoperative period did not depend on the surgical access (p > 0.05) for all). Questioning has shown that the laparoscopic versus laparotomic access significantly improves quality of life within one month after renal resection.Conclusion. Transperitoneal laparoscopic nephrectomy is a safe alternative to open surgery, which can improve quality of life in the patients with clinically localized kidney tumors within one month after surgical intervention.

Objective: to compare immediate, oncological, and functional results, as well as quality of life in patients undergoing open and laparoscopic transperitoneal radical nephrectomy (RNE) for clinically localized kidney cancer (KC). Subjects and methods. Data from 426 cT1-2N0M0 KC patients after radical nephrectomy in 1991 to 2011 were retrospectively selected. Their median age was 57 years. The male/female ratio was 1.1:1. The median highest tumor diameter was 5.0±2.2 cm. RNE was carried out in all 426 patients: in 211 (49.5 %) patients through open access and in 215 (50.5 %) through transperitoneal laparoscopic one. The patient groups operated on via different accesses were matched for major signs; however, the laparoscopy group displayed a preponderance of cT1a tumors. The median follow-up was 50.0±12.3 months. Results. There were no significant differences in the frequency of intraoperative and postoperative complications of laparoscopic and open nephrectomies. The five-year overall, specific, and relapse-free survival rates in the patients who had undergone open nephrectomy were 95.4, 98.4, and 92.2 %, respectively; those in the patients who had laparoscopic nephrectomy were 94.5, 100.0, and 93.6 %, respectively (p > 0.05 for all). The incidence of acute renal dysfunction and its distribution according to the RIFLE classes, the rate of acute dialysis and that of a decrease and a continued reduction in glomerular filtration rate, as well as the distribution of patients according to the stages of chronic kidney disease after RNE did not depend on the surgical access (p > 0.05 for all). The QLQ-30 survey data show that the laparoscopic access versus the laparotomic one improves quality of life within 1 month after RNE. Conclusion. Laparoscopic transperitoneal RNE is a safe alternative to open surgery that can improve quality of life in the patients with clinically localized kidney cancer within one month after surgical intervention.

Objective: to analyze the impact of surgical volume on functional results and cardiospecific survival rates in patients with clinically localized renal carcinoma.Subjects and methods. Four hundred and fifty-three patients with pT1–3aN0M0 renal cell carcinoma and normally functioning secondkidney who had undergone radical nephrectomy (n = 226 (49.9 %)) or kidney resection (n = 227 (50.1 %)) were selected for the investigation. The patient groups who had undergone different-volume operations were matched for gender, age, body mass index (BMI), side of involvement, tumor sizes, and baseline glomerular filtration rate (GFR) (p > for all). The median baseline Charlson index and the rate of ASA classes III–IV operative risk were significantly higher in candidates for radical nephrectomy (p < 0.05 for all), the rate of diseases affecting kidney function, pT1a category, and G1 anaplasia were higher in the kidney resection group (p < 0.0001). The median follow-up was 50 (12–224) months.Results. Within 28 days postsurgery, the rate of acute renal dysfunction (ARD) was 36.2 %. The independent risk factors of ARD were kidney resection (risk ratio (RR) = 0.210; 95 % confidence interval (CI) 0.115–0.288; р < 0.0001) and ischemia time (RR = 0.012; 95 % CI 0.004–0.021; p = 0.004). The degree of ARD after kidney resection was significantly lower than that following radical nephrectomy (p < 0.0001). In the late postoperative period, the incidence of chronic kidney disease (CKD) Stage ≥ III was 38.4 %. Its independent risk factors were low baseline GFR (RR = 0.003; 95 % CI 0.002–0.005; p < 0.0001), radical nephrectomy (RR = 0.195; 95 % CI 0.093–0.298; p < 0.0001), and ARD (RR = 0.281; 95 % CI 0.187–0.376; p = 0.0001). Ten-year specific and cardiospecific survival rates in all the patients were 98.5 and 94.9 %, respectively, and unrelated to surgical volume. The independent predictors of poor cardiospecific survival were BMI, Charlson index, and ASA risk. No relationship was found betwen cardiospecific survival and GFR in the late postoperative period.Conclusion. Kidney resection versus radical nephrectomy significantly increases the risk of severe ARD. The scope of surgical treatment for clinically localized renal cancer has not been found to affect cardiospecific survival.

Objective: to compare immediate, oncological, and functional results, as well as quality of life in patients undergoing open and laparoscopic transperitoneal radical nephrectomy (RNE) for clinically localized kidney cancer (KC).Subjects and methods. Data from 426 cT1-2N0M0 KC patients after radical nephrectomy in 1991 to 2011 were retrospectively selected. Their median age was 57 years. The male/female ratio was 1.1:1. The median highest tumor diameter was 5.0 +/- 2.2 cm. RNE was carried out in all 426 patients: in 211 (49.5 %) patients through open access and in 215 (50.5 %) through transperitoneal laparoscopic one. The patient groups operated on via different accesses were matched for major signs; however, the laparoscopy group displayed a preponderance of cT1a tumors. The median follow-up was 50.0 +/- 12.3 months.Results. There were no significant differences in the frequency of intraoperative and postoperative complications of laparoscopic and open nephrectomies. The five-year overall, specific, and relapse-free survival rates in the patients who had undergone open nephrectomy were 95.4, 98.4, and 92.2 %, respectively; those in the patients who had laparoscopic nephrectomy were 94.5, 100.0, and 93.6 %, respectively (p > 0.05 for all). The incidence of acute renal dysfunction and its distribution according to the RIFLE classes, the rate of acute dialysis and that of a decrease and a continued reduction in glomerular filtration rate, as well as the distribution of patients according to the stages of chronic kidney disease after RNE did not depend on the surgical access (p > 0.05 for all). The QLQ-30 survey data show that the laparoscopic access versus the laparotomic one improves quality of life within 1 month after RNE.Conclusion. Laparoscopic transperitoneal RNE is a safe alternative to open surgery that can improve quality of life in the patients with clinically localized kidney cancer within one month after surgical intervention.

Melanoma is characterized by rapid and early metastasis. Most often affects the metastatic regional lymph nodes, lungs, liver, brain and adrenal glands. Metastasis to the organs of the gastrointestinal tract is only 2.4%, of which 3567% is the small intestine, 9-15% in the colon, and about 6% on the stomach. In 2009-2013, in the RCRC NN Blokhin treated 3 patients with metastatic melanoma in the gallbladder. The use of minimally invasive technologies justifies an active surgical tactics in an isolated metastatic disease of the gall bladder.