The article analyzes the world experience in methods of applying of stomach nutritional fistula. Different methods of gastrostomy are described, their classification is given. The advantages and disadvantages of common surgeries are outlined. The most often used traditional surgeries are: gastrostomy by Stamm, Topver and tubular gastrostomy. Complication rate of these operations led to a further search for minimally invasive techniques: percutaneous puncture, laparoscopic gastrostomy, and laparoscopically- assisted percutaneous endoscopic gastrostomy. A significant disadvantage of minimally invasive puncture techniques is the need to purchase relatively expensive disposable sets for primary installation and replaceable low profile tubes. The cost of these supplies in Russia is much higher than the money allocated in the obligate medical insurance system, which makes the method economically unprofitable for medical institutions and patients. Partially, the costs could be reduced by the use, as a gastrostomy tube, a Foley urinary catheter. There are several studies that have confirmed economic advantages and absence of a reliable difference in the number of complications and duration of use such tubes. However, some complications are reported: migration of catheter into the duodenum with the development of obstruction, decreased comfort and quality of life. The conducted study showed absence of classification of gastrostomy types and their complications. The final consensus in clinical use of different types of gastrostomy in different situations is absent. There is a tendency to decrease rate of traditional laparotomical operations in favor of less invasive interventions making it difficult for adequate analyzing. In cases with need for revision, biopsy and fundoplication, laparoscopic or laparoscopically-assisted percutaneous endoscopic gastrostomies are preferred which has proven itself in children. For a group of palliative patients of elderly age with high risk and doubtful prognosis, minimally invasive puncture gastrostomes are more appropriate.

The main purpose of research was to study and evaluate the featres and diagnosis of differentiated thyroid carcinoma of children and adolescents. The total of 63 patients with thyroid cancer who had undergone surgery in 1994-2013 in heir hildhood were examined. The history, clinical symptoms, results of pre- and postoperative instrumental and laboratory studies were analyzed. The research showed that three-quarters of thyroid carcinoma patients do not complain. Medical examinations of teenagers allowed to reveal the disease in more than half of cases. Significant place in the diagnostics of thyroid carcinoma occupies ultrasound and fine-needle biopsy (FNB). The most persistent symptoms of thyroid carcinoma are hypoechoic node and indistinct contours of node. The sensitivity of fine-needle aspiration biopsy in relation to thyroid carcinoma was 72.1%. Almost a quarter of patients with thyroid carcinoma combined it with autoimmune thyroid disorders.

The article presents results of diagnostics, surgical treatment and follow-up of patients with rare hereditary-conditioned forms of thyroid cancer – medullary thyroid carcinoma in content of multiple endocrine neoplasia syndrome. Particular attention is paid to the examination and tactics of treatment of children and adolescents with family genetically confirmed Sipple syndrome. The disease is diagnosed in 4 families. Syndrome of multiple endocrine neoplasia 2a type we found in 7 (0.024%) of 29,325 children and adult patients. All the children were from families in which one of the blood relatives suffered medullary thyroid cancer. The family nature of the disease was confirmed by molecular genetic studies that revealed mutations in C634 (T1900C) in the 11 exon of the RET gene. Only in 3 out of 7 cases thyroidectomy was prophylactic. Four children were fond foci of medullary carcinoma in the removed thyroid gland. In total, 22 operations were performed for the members of 4 families suffering from the family syndrome MEN-2a. The article shows that if a patient is diagnosed Sippl's syndrome, all his blood relatives need to be checked for the mutation of the RET gene to identify familial medullary thyroid cancer, adenomas of parathyroid glands and pheochromocytomas. Early removal of the thyroid gland (in children under the age of 5 years) prevents medullary cancer, and timely diagnosis and adequate surgical removal of neoplasms of parathyroid glands and adrenal glands ensure recovery of the patients. Closest relatives should be checked for the level of calcium and calcitonin, catecholamines, vanillylmandelic acid and metanephrine, ACTH, cancer-embryonic antigen.

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