[Poorly cohesive gastric carcinoma. Validity of using the term; translation variants].

Gastric cancer is one of the leading causes of cancer morbidity and mortality worldwide. It is common practice to use two classification systems: the Lauren classification system and the WHO classification of tumors in the morphological study of gastric carcinomas. Since 2010, the WHO classifications have included the term "poorly cohesive carcinoma", which refers to all diffuse forms of gastric cancer, including signet ring cell carcinoma and other subtypes.

[Issues on classification of gastric neuroendocrine tumors].

A comparative analysis of available classifications of gastric neuroendocrine tumors was performed. It was showed that there were many contradictions regarding the issues of termi- nology and, in particular, criteria for determining the degree of differentiation of these tumors that significantly influenced on the choice of methods of treatment. There were unclearly marked symptoms of benign tumors, treatment of which could be conducted by endoscopy removal.

[Pathomorphological diagnosis of erosive or ulcerative reflux esophagitis from esophageal mucosal biopsies].

The histological features and morphogenesis of acute peptic mucosal lesions in gastroesophageal reflux disease (GERD) were studied using 2220 biopsy specimens obtained from 669 patients. The stages of their development and two variants of their healing, which affected the duration and outcome of the disease, were identified. Acute erosions and ulcers in the laminated squamous and cylindrical epithelial areas were shown to be a natural stage of changes that preceded the development of Barrett esophagus and promoted its progression.

[Aspergillosis (mycetoma) of gluteal region].

Lingering deep gluteal mycosis (mycetoma, aspergillosis) in a 32-year-old woman with secondary immunodeficiency is described. The disease developed after intragluteal injection of vitamins and was characterized by development of multiple dense nodes in the skin and soft tissues, parametral and pararectal fat tissue with repeated fistulas. The diagnosis was established by finding fungi histologically and cytologically.