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Aim of study. Development in an anatomical experiment of a technique for operative access to the splenic and left renal veins during distal splenorenal bypass surgery with justification of the possibility of its successful application in clinical conditions.Material and methods. In the conditions of an anatomical experiment on 40 unfixed corpses of adults of both genders, objective volumetric and spatial indicators in surgical wounds were studied in two variants of exposure of retroperitoneal space vessels, as the first stage of distal splenorenal anastomosis. In clinical conditions in 40 patients with portal hypertension of various genesis, during the operation of distal splenorenal anastomosis, the wide exposure of the anterior surface of the pancreas, spleen, left renal veins and most of their branches was performed using the original method of partial left — sided medial visceral rotation, followed by an objective assessment of the volume-spatial parameters of access. Measurements were performed using a medical goniometer in relation to the mobilized areas of the left renal and splenic veins. Statistical processing of the study results was carried out using the method of variation statistics. To identify statistically significant differences, the Student’s t-test was used for disjoint samples.Results. An original method of operative access to the splenic and left renal veins was developed during the operation of distal splenorenal bypass by lifting the internal organs of the left flank of the abdominal cavity from the posterior abdominal wall and diverting them to the right. In the anatomical experiment in the original method of partial left-sided medial visceral rotation, all indicators were better (depth of the wound is less and the angles of operative activity and the inclination of the axis of operative activity — larger) than with a classic approach of intraoperative intraperitoneal access via transverse incision in the mesentery of the transverse colon. Despite the various variants of vascular architectonics and various anthropometric indicators of patients, there were no any forced refusal of distal splenorenal bypass surgery or unintentional damage to both the vessels themselves and the pancreas, specific complications associated with the implementation of the proposed operative approach to the vessels of the left retroperitoneal space, including damage to the spleen and ischemia of the descending colon, in any of 40 clinical cases.Conclusion. The suggested option of operative access to the splenic, left renal veins and their branches at the first stage of performing distal splenorenal anastomosis in patients with portal hypertension of various genesis provides convenient spatial relations in the operating wound; creates comfortable conditions for performing the main surgical technique — applying vascular anastomosis; has a minimal risk of developing specific complications associated with the approach to the vessels of the left retroperitoneal space.

This article deals with the rare clinical observation of the patient with recurrent desmoid-type fibromatosis, who have achieved long-term stability after surgical treatment. A 24-year-old patient was diagnosed with retroperitoneal tumor which size was 8.85.613 cm in 2013, infiltrating the left psoas muscle, left kidney, left common and left external iliac arteries, descending colon and sigmoid colon. The patient underwent surgery in the volume of the tumor removal, resection of the left common iliac artery and prosthetics using GORE-TEX prosthesis, left hemicolectomy, left nephrectomy at Blokhin National Medical Research Center of Oncology. The first recurrence of the tumor was detected nine months after the surgery. Due to the subsequent growth of tumor mass, located along the left external iliac artery and in the inguinal canal, the repeated surgery was performed. Then the patient had a second relapse, and underwent surgery again. The third recurrence was detected seven months after the last surgery. During the multidisciplinary discussion, according to the absence of complaints and the small size of the recurrent tumor, as well as the absence of the risk of life-threatening complications, it was decided to stop on the observation. The patient was examined once every six months there were no data concerning recurrent tumor growth. Today, the patient is alive, does not have any complaints and is able-bodied. Our clinical observation demonstrates that active surgical tactics in case of the retroperitoneal fibromatosis recurrence not always can lead to long-term progression-free survival time and several patients can stay under the observation, using Look and Stay tactic.

Objective: retrospective evaluation of the results of the 2nd stage of implemented colorectal screening program by colonoscopy. Materials and methods . In 2015–2017, The Department of Health of the Tyumen region is implementing a colorectal screening program. First stage of the program: the test for occult blood, 2nd stage: screening colonoscopy. Results. Achieved 2157 screening colonoscopies for patients aged 55–65 years with a positive fecal immunochemical test for fecal occult blood. In 531 (24.6 %) patients adenoma and adenocarcinoma of the rectum and colon were revealed (adenomas verified in 365 (23.1 %) cases, adenocarcinoma – in 33 (1.5 %) cases). Of the total number of verified neoplasia (618 cases of localization), 365 (59 %) cases of adenoma and adenocarcinoma were located in the rectum and sigmoid colon, 253 (41 %) cases – in the descending colon, transverse colon, ascending colon and cecum. Conclusions. In the completed study, the fecal immunochemical test and, with a positive result, a video-colonoscopy were performed at the 1st stage of colorectal screening for patients aged 50–65 years. In 98 % of cases, intubation of the cecum and the time of colonoscope removal for at least 6 minutes allowed to obtain a value of adenoma detection rate ~25 %, which is indicator of the effectiveness of the performed colorectal screening.