An Ulcerated Umbilical Nodule

Umbilical endometriosis

“…Biopsy methods include laparoscopy and skin biopsy. Isolated cutaneous presentation is rare 3 and the most frequent clinical symptoms are pelvic or abdominal pain, secondary dysmenorrhoea, dyspareunia, and infertility 2 . Rare cutaneous or mucosal locations have been reported on the perineum, vagina, groin, umbilicus, as have surgical scars.…”