Atypical prostatic leiomyoma is a very rare benign tumor. We report here a
new case with a cytodensitometric analysis. The result of cytodensitometry
is a polyploid tumor that is well correlated with the morphology of nuclear
multilobulated cells of this tumor. The differential diagnosis is essentia
lly the leiomyosarcoma which is characterized by the absence of mitotic act
ivity. (C) 2000 Editions scientifiques et medicales Elsevier SAS.