Aggressive angiomyxoma presenting as polyp of uterine cavity

Aggressive angiomyxoma is a distinctive, locally aggressive tumor associate d with a high risk of local recurrences that lacks metastatic potential. Th is tumor occurs mostly in the soft tissues of the pelvis and the perineum o f adult women. It may rarely occur at less common sites, such as the vagina , urinary bladder, and soft tissue of the perineum and the perianal region in men, particularly the scrotum. We report a case of aggressive angiomyxom a presenting as an endometrial uterine polyp. To the best of our knowledge, the primary location of aggressive angiomyxoma within the uterine cavity h as never been described. Immunohistochemical and ultrastructural findings s upport the conclusion that the progenitor cell displays myofibroblastic and fibroblastic features, with a capacity for smooth muscle differentiation.