[Morphological characteristics of mucinous cancer of the breast containing endocrine cells]. / Morfologicheskie osobennosti slizistogo raka molochnoi zhelezy, soderzhashchego endokrinnye kletki.

It was established that mucus-forming mammary gland carcinoma containing endocrine cells may have a structure of an ordinary colloid mammary gland carcinoma or carcinoid carcinoma with mucus formation. The presence of amyloid in the stroma of colloid carcinoma containing endocrine cells may serve as an additional sign of the endocrine cell differentiation. Simultaneous observation in the tumour cells of both mucous inclusions and endocrine granules may be regarded as a proof of an origin of epithelial and endocrine cells of the mammary gland from a pluripotent stem cell.

[Metastasis of one tumor into another in multiple primary neoplasms]. / Metastazirovanie odnoi opukholi v druguiu pri pervichno-mnozhestvennykh novoobrazovaniiakh.

Eight patients had two tumours located in different organs: one of these tumours was carcinoma which metastasized into another, histologically benign neoplasm. Morphological characteristics of the two tumours, sources of metastases and metastasis "recipients", are described. The order of their clinical manifestations was followed up.

[Amyloid-forming apudoma of the breast]. / Amiloidobrazuiushchaia apudoma molochnoi zhelezy.

A peculiar mammary gland tumour is described. Histological structures typical for apudomas of various level of differentiation were combined in the tumour. Apart from highly differentiated carcinoid-like areas, there were zones of a small-cell carcinoma corresponding to a poorly differentiated variant of apudoma. Deposits of amyloid were found in the tumor stroma, this being non-typical for mammary carcinoma. Amyloid was stained by Congo red and birefringent in a polarizing microscope. When differential diagnostics of mammary gland tumours is made, stromal amyloidosis in parallel to typical histological picture and specific histochemical reactions may play a role of an additional diagnostic symptom.