[Undifferentiated epithelioma of the parotid and cystadenolymphoma. Apropos of a case].
A case of undifferentiated epithelioma of the left parotid gland occurred 2 years after the removal of a cystadenolymphoma in the right parotid gland. The relationship of these two tumours was supported by several statements: the immunohistochemical study demonstrated in the epithelial cells of the 2 neoplasms the existence of ACE, usually thought as characteristic of cystadenolymphoma. Besides, it showed a high number of plasma cells secreting IgA in the stroma of the 2 tumours, the ultrastructural study performed on the epithelioma also demonstrated some similarities between epitheliomatous cells and epithelial cells of cystadenolymphomas (outlined epidermoid or glandular differentiation, numerous mitochondria). A peculiar, perhaps immunological mechanism could induce the cancerization, according to the theories used to explain the histogenesis of cystadenolymphoma.
Service d'Anatomie Pathologique, Hôpital de la Pitié, Paris.
G
G
Chomette
M
M
Auriol
J M
JM
Vidal
J
J
Soudant
D000235:Adenolymphoma / Q000473:pathology; D002277:Carcinoma / Q000473:pathology; D003537:Cystadenoma / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary; D010307:Parotid Neoplasms / Q000473:pathology
Epithélioma indifférencié de la parotide et cystadénolymphome. A propos d'une observation.