No abstract

umbilical endometriomas with drainage openings. The purplish-blue areas around the openings and the amorphous red substance filling one of them probably result from blood deposits. A similar blue-grey structureless area was also described in a case of vulvar endometriosis. 6 The evacuation of the blood through the drainage holes could explain the few red blood cells and hemosiderin deposits found in the stroma on the histopathological examination of the patient. This could potentially explain why the first two dermoscopic criteria previously described for umbilical endometriomas could not be found (red atolls and brown globules). However, we were able to identify homogeneous, flesh-coloured, light to dark brown structureless areas, similar to the amorphous brown areas described by Jaime et al. 5 Dermoscopy represents a complementary tool in the physical examination of umbilical lesions that seems likely to aid diagnostic accuracy, but further studies are needed to support and validate the dermoscopic signs associated with umbilical endometriosis. Histopathological examination remains the diagnostic gold standard and is mandatory to rule out a neoplastic condition, as more than 40% of umbilical tumours are malignant. 3 As illustrated in our case, a diagnosis of umbilical endometriosis should lead to further investigations to rule out an underlying, more extensive disease, and hormonal treatments may be offered to patients who decline surgery. 1

No abstract

No abstract