Umbilical endometriosis: report of a case and its dermoscopic features
Female, 32 years old, came to our service complaining about a 3-month growth in the umbilical area. The lesion was a shiny reddish-brown nodule, measuring 3cmx3cm, painful to the touch and that alternated in size since its onset (). The patient referred one episode of spontaneous bleeding that did not follow her menstrual cycle. She had had a cesarean delivery 6 years ago and no gynecologic complaints. After clinical examination, dermoscopic observation was performed, using a polarized light dermatoscope (DermLite II Pro HR). It showed homogeneous reddish localized pigmentation, with no differentiated structures. In addition, an amorphous brown area was present, where normal skin network was more evident in some parts (). The biopsy revealed fibroblastic proliferation in the dermis and endometrial glandular tissue, of the decapitation secretion type ( and ). It also revealed deposit of hemosiderin in the dermis as an evidence of previous bleeding (). The diagnosis of primary umbilical endometriosis was established. All the imaging exams as well as the Ca-125 dosage were normal.