[Role of various risk factors in the development and diagnosis of recurrent pain in adolescents--students of cadet corps].

Randomized single-blind case--control study is performed. In total, the cadet corp students with recurrent functional abdominal pain and headaches are examined. The paper shows the role of various risk factors in the occurrence of these states. Diagnostic validity is evaluated. Multifactorial genesis of the studied pathology is proved. The essential role in the formation of the psychological characteristics of personality, neurotic states and autonomic dysfunction is shown. Several constitutional characteristics of the organism were not diagnostically significant.

[Resection and prosthetics of abdominal aorta by surgical treatment of invasive retroperitoneal tumors].

Data of 5 patients, who required resection and prosthetics of abdominal aorta during radical excision of malignant retroperitoneal lesions, were analyzed. Therefore, 2 patients demonstrated retroperitoneal lymph node metastases of nonseminoma hermonogenous tumour, 1 patient had colorectal liver and lymph node metastases, another had ovarian tumor, and the rest--leiomyosarcoma of the aorta. Tubular Gore-tex aortic prostheses were used. Radical tumor excision provided absence of local recurrence in all patients. Only one patient showed further progression of the tumor as liver metastases. Thus, such an aggressive surgical approach could be appropriate in carefully selected group of patients.