BENIGN HYPERPLASIA IN ECTOPIC PROSTATIC TISSUE - A RARE CAUSE OF PELVIC MASS

Four cases of a pelvic mass due to the development of benign hyperplas ia within ectopic prostatic tissue are reported. They presented a hypo echoic homogeneous or heterogeneous pattern on transrectal ultrasonogr aphy and a high signal intensity on T2-weighted spin-echo sequences on MR. On CT the density was similar to that of prostatic tissue. No rec ent imaging findings of this rare entity have been described in the li terature. Possible aetiologies are discussed. Even if it is a rare eve nt, the correct diagnosis can be reached. It is important for radiolog ists to consider the presence of this lesion because of its benign nat ure.