抄録
Aggressive angiomyxoma (AA) is a rare soft tissue tumor that involves the vulvar and perineal regions of afflicted individuals. It is a slow-growing and locally infiltrating tumor that is characterized by an increased risk of local recurrence. In this report, we describe the case of a large AA in a 39-year-old woman. She was admitted to our hospital with a pelvic tumor, which was discovered during a gynecologic checkup, and magnetic resonance imaging revealed its presence traversing from the pelvic diaphragm to the perineum. The tumor was completely excised using an abdominal approach, and the pathological diagnosis was that of AA. The patient had an uneventful recovery and no evidence of recurrence exists 12 months after surgery. Long-term follow-up and careful monitoring, however, are necessary because AA is slow-growing. As AA is usually reported as a vulvar tumor, the present case is a rare incidence in which the AA grew largely into the pelvic cavity.