Aggressive Angiomyxoma Extending Largely into the Pelvis ― A Case Report and Review of the Literature―

Aggressive angiomyxoma (AA) is a rare soft tissue tumor that involves the vulvar and perineal\nregions of afflicted individuals. It is a slow-growing and locally infiltrating tumor that is characterized\nby an increased risk of local recurrence. In this report, we describe the case of a large AA in a\n39-year-old woman. She was admitted to our hospital with a pelvic tumor,which was discovered during\na gynecologic checkup, and magnetic resonance imaging revealed its presence traversing from the pelvic\ndiaphragm to the perineum. The tumor was completely excised using an abdominal approach,and the\npathological diagnosis was that of AA. The patient had an uneventful recovery and no evidence of\nrecurrence exists 12 months after surgery. Long-term follow-up and careful monitoring, however, are\nnecessary because AA is slow-growing. As AA is usually reported as a vulvar tumor, the present case\nis a rare incidence in which the AA grew largely into the pelvic cavity.