title: [Carcinomas in papillary cystadenolymphomas of the parotid gland--definition and differential diagnosis (author's transl)].
abstract: Within a collective of 1431 salivavry gland tumors of the salivary gland register (1965--1976) an observation has been done, which has been classified as a "carcinoma in a papillary cystadenolymphoma". Corresponding to the "carcinoma in a pleomorphous adenoma" of the WHO-classification of salivary gland tumors the terminus "carcinoma in a cystadenolymphoma" is further defined. 6 additional cases from the literature are reviewed. The possible role of epithelial metaplasia and of a proceding radiation in the development of carcinomas in cystadenolymphomas are discussed. The following other tumors have to be differentiated from a carcinoma in a cystadenolymphoma: Metastases of other tumors beyond a cystadenolymphoma; malignant lymphoepithelial lesions (predominantly malignant lymphomas in a preexisting immune-sialadenitis of the myoepithelial sialadenitis type; rare carcinomas), and lymphoepitheliomas.
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis* / Q000473:pathology; D000235:Adenolymphoma / Q000175:diagnosis* / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008223:Lymphoma / Q000175:diagnosis; D008875:Middle Aged; D009362:Neoplasm Metastasis; D009378:Neoplasms, Multiple Primary; D010307:Parotid Neoplasms / Q000175:diagnosis* / Q000473:pathology; D012793:Sialadenitis / Q000175:diagnosis
vernacular_title: Carcinome in Papillären Cystadenolymphomen der Parotis Definition und Differentialdiagnose.