Parovarian cystadenocarcinoma: a case report.

Although primary ovarian carcinomas are frequent, carcinomas having a primary origin in parovarian cysts are extremely rare. The majority of neoplasms developing in parovarian cysts are benign serous tumours. Only 9 cases of parovarian adenocarcinoma have been reported so far in the world literature. Out of these 6 have been of low grade malignancy. Of the rest 3 cases also, only one was invasive. The case described here appears to be the second case of parovarian adenocarcinoma which was invasive. The origin of this tumour is discussed together with a brief review of literature on adenocarcinomas of parovarian origin.