Symptomatic Primary Umbilical Endometriosis: A Case Report and A Review of the Literature
This case report describes a patient with symptomatic primary umbilical endometriosis, also known as Villar’s nodule, who presented with cyclic pain and bleeding despite having no prior medical or surgical history. The diagnosis was confirmed through the surgical excision of a bluish umbilical nodule followed by pathological examination. The authors highlight that this extra-pelvic manifestation can occur spontaneously without previous abdominal surgeries, emphasizing the importance of considering it in differential diagnoses for such presentations. This paper is centrally about endometriosis — specifically the rare presentation of primary umbilical endometriosis in a patient without surgical history.
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