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Early diagnosis of genito-urinary tumours by urinary cytology.

Urinary Cytology, if performed with accuracy, plays an important (sometimes decisive) role in early diagnosis of genito-urinary tumours. It offers many advantages: easiness in carrying out, possibility to repeat the examination at will, painless execution, no invasiveness and restricted cost. The Authors report on their experience in performing cytologic examination on fresh urine specimens, formalin-fixed in Swinnex milliphore-filter and stained according to a slightly modified Papanicolau method (Alcohol 80 degrees + Haematoxylin-). Thanks to a carefully executed technique of concentration and cellular preservation, the Authors were able to obtain complete specimens, interpreted easily, and to identify the main morphologic changes of neoplastic cells, namely the characteristic nucleo-cytoplasmatic alterations. Between 1986 and 1987 the Authors examined 600 patients, admitted to Urologic Dept. of Saronno General Hospital, employing, amongst others diagnostic procedure (cystoscopy, needle biopsy, CAT, ecc.), urinary cytology: they observed 94% of true results (positive or negative for genito-urinary tumours) in comparison with 4% of false positive and 2% of false negative only; these results compared to others, appeared until now, in Medical literature, lead to regard this technique, further improved by more experience in cytology, as a greatly valuable and highly reliable diagnostic method, mainly in early discovery of genito-urinary neoplasms.