[Pyloric gland adenoma - a rare tumor of the upper gastrointestinal tract with a high risk of malignancy]. / Adenoma piloricheskikh zhelez ­ redkaya opukhol' verkhnikh otdelov zheludochno-kishechnogo trakta s vysokim riskom malignizatsii.

BACKGROUND: Pyloric gland adenomas (PGA) are rare neoplasms of the gastrointestinal tract. According to the literature, these lesions may be underdiagnosed, and their true frequency of occurrence is underestimated. OBJECTIVE: Clinical and morphological analysis of eight PGA cases of the upper gastrointestinal tract. MATERIAL AND METHODS: The study included 8 cases of detection of PGA. In 7 out of 8 cases, the tumor was diagnosed by examining endoscopic biopsies, in 1 case, PGA was an accidental finding in the surgical material after proximal gastric resection. RESULTS: 6 out of 8 patients were female, the median age was 65 years (minimum 36 years and maximum 78 years). In 6 cases, PDA was localized in the stomach, in 1 - in the esophagus and in 1 - in the duodenum The size of the tumors ranged from 0.6 cm to 7.5 cm. 4 out of 6 stomach tumors appeared on the background of confirmed autoimmune gastritis, 1 - on the background of lymphocytic gastritis. 4 tumors were found in the body of the stomach, 1 - in the cardia, 1 - in the bottom of the stomach. In 2 out of 8 cases, there were signs of malignancy of the tumor with the transition to a highly differentiated adenocarcinoma. According to the results of the IHC study, the absence of a p53 mutation was noted in these cases. CONCLUSION: PGA should be considered as neoplasms with a high risk of transformation into invasive adenocarcinoma. Increasing the recognition of PGA among pathologists and further understanding of the molecular mechanisms involved in their neoplastic transformation will improve the diagnosis and treatment of this pathology.

[Metastatic lesions of the adrenal glands. The experience of Endocrinology Research Center.]

Differentiation between benign, primary and secondary malignant tumors is a critical problem in the clinical treatment of adrenal tumors, especially in patients with isolated adrenal lesions. In most cases, the correct diagnosis can be established microscopically with standard staining with hematoxylin and eosin. However, there are cases when it is almost impossible to distinguish metastasis from primary adrenal cancer, so an accurate diagnosis requires an immunohistochemical examination.This article presents five unique observations of secondary adrenal tumors that were diagnosed by us in the current surgical material: metastasis of clear cell renal cell carcinoma, follicular variant of papillary thyroid cancer, metastasis of keratinizing squamous cell carcinoma of the cervix, lymphoepithelioma-like carcinoma of the bladder, as well as malignant mesothelioma. Taking into account the extreme rarity of the presented observations, we present an analysis of the literature data.

[Metachronous tumors of the stomach in a patient with autoimmune gastritis]. / Metakhronnye opukholi zheludka u patsientki s autoimmunnym gastritom.

Stomach cancer continues to be a global health problem, ranking 5th among cancers and 4th among the causes of death from cancer in the world. Autoimmune atrophic gastritis is a chronic autoimmune disease characterized by the production of antibodies to parietal cells and intrinsic factor, followed by atrophy of the mucous membrane of the body and fundus of the stomach. Chronic autoimmune inflammation can lead to damage to the genetic apparatus of the cell and trigger a multi-stage process of carcinogenesis. Our article presents an unusual case of three different gastric tumors, including adenocarcinoma with microsatellite instability, in a patient with autoimmune gastritis.

[Multifactorial assessment of prognostic features of adrenocortical cancer]. / Mul'tifaktornaya otsenka prognosticheskikh osobennostei adrenokortikal'nogo raka.

OBJECTIVE: To determine the predictors of the aggressive course of adrenocortical cancer (ACC). ACC is a rare malignant neoplasm of the adrenal cortex with a variable prognosis. At present, predicting the course of the disease and clinical outcome in patients presents significant difficulties, since many aspects of the treatment of ACC have not been studied or require clarification. In particular, the prognostic value of markers that are used in clinical practice has not been fully determined. MATERIAL AND METHODS: Histological and immunohistochemical studies of the surgical material of adrenal neoplasms were performed. The study included 73 patients with a histologically confirmed diagnosis of ACC: 51 (69.9%) women and 22 (30.1%) men aged 17 to 82 years. Cox regression model was used for survival analysis. Statistically significant factors (p<0.05) according to the results of independent regression analysis were included in the Kaplan-Meier analysis followed by pairwise comparison using the log-rank test. RESULTS: An increased risk of recurrence is associated with the presence of pathological mitoses and excessive secretion of aldosterone, death - with stage IV according to the classification of the European Network for the Study of Adrenal Tumors (ENSAT), relapse and death - the value of mitotic activity more than 20, the Ki-67 index more than 12, the classic variant. Mitotic activity and hormonal activity were independent predictors of recurrence-free survival, mitotic activity and ENSAT stage were independent predictors of overall survival. CONCLUSIONS: In the present work, potential predictors of the course of ACC are identified, which are available for use in routine practice. Based on the totality of clinical, morphological, immunohistochemical data used in the diagnosis of ACC, a conception of the patient's survival can be obtained.