[Intraductal radiofrequency ablation under endosonography and cholangioscopy for residual adenoma of the major duodenal papilla with intraductal component].

All adenomas of the major duodenal papilla (MDP) require resection regardless of morphological structure due to high risk of malignancy. Currently, intraluminal endoscopic interventions are preferable for these adenomas. MDP neoplasms with intraductal spread (type III and IV) are of particular difficulty for endoscopic techniques.

[Endoscopic treatment of recurrent Zenker diverticulum and postoperative esophageal stricture].

Zenker diverticulum is a rare disease accounting for 1.5-5% of esophageal diverticula. For a long time, surgical treatment of Zenker pharyngoesophageal diverticula implied open diverticulectomy via cervical approach.

Hybrid laparo-endoscopic access: New approach to surgical treatment for giant fibrovascular polyp of esophagus: A case report and review of literature.

Background: Fibrovascular polyps are rare type of esophageal submucosal neoplasms. They are highly vascularized and can cause difficulty swallowing and even fatal complications such as uncontrolled bleeding and death caused by asphyxiation in case of tumor migration to oropharynx. In the article we describe a novel hybrid technique to surgical treatment - an endoscopic submucosal dissection with laparoscopic removal of the tumor.

[Hybrid laparo-endoscopic access for giant fibrovascular esophageal polyp: a case report].

Fibrovascular polyp is a rare non-epithelial esophageal tumor arising from submucosal layer and consisting of connective and adipose tissue, as well large number of vessels. Large tumors can cause dysphagia, vomiting, chest pain, shortness of breath and/or asthma, while giant neoplasms are potentially life threatening. Despite active introduction of minimally invasive treatment of patients with non-epithelial gastrointestinal tumors, there are still difficulties in surgical treatment of fibrovascular polyps.

[Diagnosis and surgical treatment of a patient with Castleman disease].

Castleman disease (CD) is a benign lymphoproliferative disease. Small prevalence and diverse clinical course of disease makes it difficult to standardize diagnostics and treatment. Currently, the number of CD patients has increased with improvement in the quality of examination.

[Difficulties in diagnosis of neuroendocrine tumors of the gastrointestinal tract].

We present diagnosis and complex minimally invasive surgical treatment of a patient with long-standing neuroendocrine tumor of the upper gastrointestinal tract. We followed-up a 50-year-old female patient after endoscopic resection of polypoid neoplasm of the stomach for 2 non-organ retroperitoneal neoplasms in the area of hepatogastric ligament. After a comprehensive examination and minimally invasive surgery including laparoscopic resection of retroperitoneal neoplasms, immunohistochemical examination, PET-CT and targeted endoscopic ultrasound of the stomach, we diagnosed a highly differentiated gastric neuroendocrine tumor with metastases into lymph nodes of hepatogastric ligament.

[Complex endoscopic treatment of a patient with a large adenoma of the major duodenal papilla, choledocholithiasis and stricture of the common bile duct].

Incidence of adenomas of the major duodenal papilla has increased in recent years due to widespread endoscopic screening. These adenomas require resection due to high risk of malignant transformation. Currently, minimally invasive endoscopic interventions are often considered as an alternative to surgical treatment.

[Submucosal tunneling endoscopic resection for large esophageal leiomyoma: technical aspects and risk of complications].

Unlabelled: We analyzed the technical aspects and risk of possible complications after submucosal tunneling endoscopic resection for large esophageal leiomyoma. A patient with a 4-cm non-epithelial esophageal tumor underwent STER procedure in June 2018. Surgery time was 130 min.

[Hybrid laparo-endoscopic gastric resection for non-epithelial pyloric tumor].

In January 2020, a patient with a gastrointestinal stromal tumor of the antrum located in close proximity to the pylorus underwent a hybrid laparo-endoscopic organ-sparing gastric resection. There were no intraoperative and postoperative complications. Control endoscopic and X-ray examination of the stomach confirmed normal motor and evacuation function of the stomach.

[Laparoscopic reconstructive Roux-en-Y hepaticojejunostomy].

Intraoperative damage to the bile ducts following laparoscopic cholecystectomy is still one of the urgent problems of modern minimally invasive surgery. In some cases, these complications lead to patient disability, deterioration in their quality of life and need for redo surgery including technically difficult procedures. Modern endoscopic technologies are essential in the treatment of postoperative benign strictures of the common bile duct.

[Endoscopy-assisted dilatational tracheostomy in patients with COVID-19].

Objective: To summarize an experience of endoscopy-assisted dilatational tracheostomies in patients with COVID-19.

Material And Methods: There were 31 endoscopy-assisted dilatational tracheostomies in patients with COVID-19 for the period from April 17 to June 10, 2020 (11 women and 19 men). Mean age of patients was 66.