[Parovarian cysts and tumors in adolescent girls].

Biopsy in 30 girls suffering from parovarial lesions showed 27 parovarial cysts and 3 parovarial tumours. Girls' age varied between 12 and 17--except an 1-year-old infant. 13 girls had to be operated on paramesonephric unilocular usually solitary cysts with a tubal sort of lining. 4 girls had simultaneous paramesonephric and mesonephric cysts which were bilateral in two cases. Pure mesonephric cysts were found in further 9 patients combined with other bioptic lesion; they were microscopical and character of their lining was that of dilated mesonephric ducts. Only one cyst which had to be operated on had mesothelial lining in all sections. Parovarial tumours were bilateral in one patient--a serous papillary cystadenoma followed later by serous cystadenofibroma; other 2 patients had serous cystadenofibroma and borderline serous papillary cystadenoma. Neoplastic nature of the last 3 lesions was not established until the biopsy.