[Metastasizing bronchial carcinoids].

Bronchial carcinoids develop metastases approximately in 22 per cent of cases. Metastases can develop in all anatomical forms of the growth. Histologically, metastasizing tumors may be of a different structure: a) typical histoarchitectonics and cytology; b) atypical histoarchitectonics but without cell atypism; c) typical histoarchitectonics associated with cytologic atypism; d) histoarchitectonic atypism associated with cytologic atypism. There is no dependence between an anatomical form of the growth and histological structure. But secondary changes in the lung are directly dependent on the localization and anatomical form of the growth. In Fontana silverring and diazol rose staining secretory granules in the tumor cells cytoplasm, as a rule, are not revealed, including the cases with carcinoid syndrome.