Endometriosis is the extrauterine engraftment of endometrium-like tissue, causing chronic pain. Complex sensory-vascular-immune interactions, including growth factors, cytokines, and neuropeptides, are implicated in its pathophysiology, but the mechanisms remain unknown. …
Primary umbilical endometriosis is a rare condition in which there is endometrial glands and stroma in the umbilicus. Primary umbilical endometriosis is also called villar's nodule. This condition is a …