Histopathologic examination of the lesion revealed irregular glandular structures within a highly cellular and vascular stroma. The glandular structures were lined by a single layer of epithelium showing decapitation secretion into the lumen.
The patient underwent a gynecologic and endocrinologic evaluation. Two months after the umbilical nodule was surgically excised, she underwent an abdominal hysterectomy because of uterine myomatosis. No evidence of intra-abdominal endometriosis was found. The patient has been followed up for 1 year and has been completely asymptomatic.