[Prostatic mucinous adenocarcinoma. Report of a new case and review of the literature].

Objective: To present an additional case of mucinous adenocarcinoma of the prostate gland. The histochemical and immunohistochemical findings demonstrating its prostatic origin are presented and the literature is reviewed.
Methods/results: A 53-year-old male with no previous symptoms or signs presented for a prostatic examination. DRE was normal and PSA was 35 ng/ml. A prostate biopsy demonstrated adenocarcinoma of the prostate with a Gleason score of 3 + 3. Complementary studies were negative. The patient was submitted to radical prostatectomy. Anatomopathological analysis of the surgical specimen demonstrated a prostatic mucinous adenocarcinoma. At one-year follow-up, the patient is alive and disease-free and PSA values have returned to normal.
Conclusions: Mucinous adenocarcinoma of the prostate is a rare anatomopathological variant whose natural history and prognosis are not well-known. This tumor type generally does not respond to any treatment and is hormone-resistant.