[Morphology of experimental tumors of the sympathetic nervous system].

Morphology of experimental tumours of the sympathetic nervous system in rabbits and hamsters induced by administration of nitrose compounds and the use of modifying factors was studied. The tumours were localized in the mediastinum, retroperitoneal space, adrenals and kidneys. The predominant involvement of the female animals was observed. Histological, histochemical and electron microscopic study of 33 tumours of the sympathetic nervous system was carried out. The tumours were classified as ganglioneuromas, ganglioneuroblastomas and sympathoblastomas by their degree of maturity. The experimental tumours by their structure were similar to the analogous neoplasias of man.