[On the histo- and morphogenesis of sclerosing pneumocytoma and its diagnostic criteria].

The paper presents the data available in the literature on the pathogenesis, clinical and morphological, histological and immunohistochemical features of pulmonary sclerosing pneumocytoma (SP). The paper gives the detailed histological and immunohistochemical characteristics of 6 SP cases. The need for the differential diagnosis of SP is determined by the features and complexity of their histo- and morphogenesis within a single tumor and a complex diagnostic study.

[Primary lung osteosarcoma simulating gastric carcinoma].

The rarest case of primary lung osteosarcoma is described. Despite the fact that an extended clinicoinstrumental study was conducted, the clinicians who interpreted the process to be a destructive gastric carcinoma did not diagnose the site of the tumor. Autopsy identified the unusual form of primary lung malignancy progression with an advanced invasion into the organs on both sides of the diaphragm, including the gastric wall.

[Serous papillary adenocarcinoma of the endometrium].

Serous-papillary endometrial adenocarcinoma (SPEA) accounts for 10% of endometrial carcinoma. Histological similarity with ovarian carcinoma originating from the cylioepithelial cyst is explained by the same histogenesis from Muller epithelium analogs. The description is given of SPEA with essential content of psammotic bodies, embolism and development of intramural, cervical, parametral and lymphogenic metastases.

[Primary esophageal melanoma ].

Two cases of esophageal primary melanoma in females aged 63 and 68 years with nodular and lentiginous forms of growth are reported. The diagnosis was made intraoperatively and at autopsy, respectively. Morphogenetically, there were primary multiple non-simultaneous zones of tumor growth with the apposition growth as a form of tumor progression.

[The morphofunctional characteristics of the duodenum in an osteopenic syndrome in children and adolescents].

Aim: The study of duodenal morphology in children and adolescents with skeletal deformity.

Materials And Methods: Clinical, hormonal examinations, x-ray investigation of the skeleton with spinal NMR-tomography, gastroduodenoscopy with target biopsy were performed in 41 patients aged 7 to 18 on after treatment for broken spine.

Results: Atrophic duodenitis found in most of the patients presented without dyspepsia, with symptoms of duodenitis in 8 patients, osteoporosis in 36% of patients.