18F-FDG PET/CT findings of a recurrent adenocarcinoma arising from malignant transformation of abdominal wall endometriosis.

Abdominal wall endometriosis (AWE) is defined as endometrial tissue located superficial to the peritoneum, which usually develops in a surgical scar of cesarean delivery. Malignant transformation of AWE is a very rare disease. The most frequent histotype of malignancy developing from AWE is endometrioid adenocarcinoma. We present F-FDG PET/CT findings in a 37-year-old woman with a recurrent adenocarcinoma arising from malignant transformation of AWE, who underwent a repeat PET/CT scan because of a recurrent mass at the upper right side of the surgical incision after a previous cesarean delivery.