Brief Overview of Clear Cell Adenocarcinoma of the Urethra: Review of the Literature

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Brief Overview of Clear Cell Adenocarcinoma of the Urethra: Review of the Literature

June 17, 2020 Medical Science 0

Background: Clear cell adenocarcinoma of the urethra (CCAU) is extremely rare and a number of clinicians may be unfamiliar with its diagnosis and biological behaviour.  Aims: To review the literature on CCAU.  Methods: Various internet databases were used.  Results/Literature Review: (i) CCAU occurs in adults and in women in the great majority of cases. (ii) It has a particular association with urethral diverticulum, which has been present in 56% of the patients; is indistinguishable from clear cell adenocarcinoma of the female genital tract but is not associated with endometriosis; and probably does not arise by malignant transformation of nephrogenic adenoma. (iii) It is usually, readily distinguished from nephrogenic adenoma because of greater cytological a-typicality and mitotic activity and does not stain for prostate-specific antigen or prostatic acid phosphatase. (iv) It has been treated by anterior exenteration in women and cystoprostatectomy in men and at times by radiotherapy; chemotherapy has rarely been given. (v) CCAU is aggressive with low 5-year survival rates. (vi) There is no consensus opinion of treatment options that would improve the prognosis.  Conclusions: Few cases of CCAU have been reported. Urologists, gynecologists, pathologists, and oncologists should report cases of CCAU they encounter and enter them into a multicentric trial to determine the best treatment options that would improve the prognosis.

Author (s) Details

Anthony Kodzo-Grey Venyo
Department of Urology, North Manchester General Hospital, Delaunays Road, Manchester, UK.

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