[Well differentiated adenocarcinoma ("yellow cancer") of the prostate. Problems of diagnosis and prognosis (author's transl)].

This paper reports the case of a very large hyperdifferentiated prostatic adenocarcinoma, characterized by a very high lipid content; there is little information in the literature about diagnosis and prognosis of this rare type of cancer. Relevant characteristics of this tumor were its middle prostatic location, its soft consistency and its homogeneous yellow appearance (the so called "yellow cancer") - In spite of its large size, the growth remained confined to the prostate. The histological aspect of this cancer is close to intense glandular hyperplasia, so the differential diagnosis is quite difficult on scanty biopsy samples without lipid stains.