[The role of cells originating from seminal vesicles in aspiration biopsy smears of the prostate (author's transl)].

328 (30.7%) of 1068 prostatic aspirates obtained from 874 patients contained cells of seminal vesicle origin. Cells originating from the seminal vesicles were recognized in aspirates obtained from 27.6% of the untreated patients and in aspirates from 60.4% of the treated patients. Patients of the latter group had received hormonal treatment or radation therapy, or both, or had been surgically treated by prostatectomy. The occurrence of cells derived from seminal vesicles was due to the site of the needled prostatic lesion in 21% of the aspirates obtained, to treatment in 21% and to incorrect biopsy technique in the remaining 58%. A false cytologic report was made in the case of 6 aspirates (1.6%).