The effectiveness of the original technique of hemorrhoidectomy with lateral ultrasonic dissection in the cutting mode was analyzed from a clinical standpoint and studied according to pathomorphological changes in tissues during its use. A comparative assessment of the immediate results of treatment as well as pathomorphological changes in the tissue of removed hemorrhoids in two groups of patients was performed. The main group included 30 patients in whom the original hemorrhoidectomy technique with lateral ultrasound dissection in the cutting mode was used. The control group consisted of 30 patients who underwent Milligan Morgan hemorrhoidectomy using electrocoagulation. No significant difference was found between these groups in terms of the age and sex structure of patients, as well as the main clinical characteristics of the disease. In a comparative analysis of the immediate treatment results, the intensity of the pain syndrome and the incidence of postoperative complications were lower in the main group than in the control group. In the assessment of pathomorphological changes, the depth of coagulation necrosis and the severity of necrobiotic changes in the underlying layer after hemorrhoidectomy with lateral ultrasonic dissection in the cutting mode were significantly less than those after Milligan Morgan surgery using electrocoagulation. A significant difference was also revealed in the timing of tissue regeneration. The formation of active granulations in the postoperative wound area in the main group was noted on postoperative days 1416, while this process developed no earlier than on postoperative day 20 in the control group. As a result, complete epithelialization of wounds after hemorrhoidectomy with lateral ultrasound dissection in the cutting mode occurred much earlier, i.e., postoperative days 2630. A similar process after the Milligan Morgan hemorrhoidectomy using monopolar coagulation was completed only on postoperative days 3638. Thus, the use of the original technique of lateral ultrasound dissection provides a more sparing effect on tissues, which is the key to a favorable course of the postoperative period and rapid rehabilitation of patients.

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This study highlighted the main stages of the formation and development of surgery of bile ducts by the scientific school of Doctor of Medical Sciences, Honored Scientist of the Russian Soviet Federative Socialist Republic, Professor Sergey Petrovich Fedorov. The current state of this area of surgery and its prospects are also considered. The works of S.P. Fedorov and his students opened a new page in surgery of that time: surgical treatment of patients with liver and biliary tract diseases. The results of research of the last three decades are the subject of particular pride in the successful continuation of the work of the founder of hepatobiliary surgery in our country. The scientific search and relay of the achievements of the scientific school of Professor S.P. Fedorov were performed in numerous publications, such as in periodicals, monographs, manuals, and speeches in our country and abroad, in a cumulated form, and this is presented in dissertations. In the study of the peculiarities of housing and communal services, both fundamental and applied aspects of solving this social problem of modern society are being developed. After the death of Sergey Petrovich, 17 candidate and 5 doctoral dissertations on the problems of biliary tract surgery were defended in the clinic of S.P. Fedorov Faculty of Surgery of S.M. Kirov Military Medical Academy. After over the past years, more than 200 articles, four monographs and manuals were published, and many messages were made at scientific forums in our country and abroad.

The research was performed at the Loginov Moscow Clinical Scientific Center. It is based on Russian obstructive jaundice (OJ) consensus results, considered at the 45th annual Central Research Institute of Gastroenterology Scientific session Oncological issues in the gastroenterologist practice (1 March 2019). The article objective is to note the diagnostic and conservative treatment current issues in patients with OJ. The increase in the number of patients with OJ of different etiology provides problem actuality. In a large number of cases, medical treatment is delayed due to inadequate diagnostic and management, while correct patients routing today can be provided regardless of medical institution level. In this article the examination steps and conservative treatment role in patients with biliary obstruction management are presented.