An unusual clinical presentation and histological findings provide insight into the pathogenesis of endometriosis
A patient with endometriosis presented with a rapidly growing cyst containing an endometriotic implant within an excised pelvic lymph node, highlighting the potential role of the lymphatic system in the disease's pathogenesis.
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This paper reports an unusual endometriosis case in a 37-year-old woman with known disease who developed a rapidly enlarging endometrioma after prior surgical drainage, ultimately requiring laparotomy and right salpingo-oophorectomy for severe pain. Surgery revealed marked retroperitoneal inflammation and fibrosis, and a 2.5 cm pelvic lymph node was excised; histology identified a cystic structure interpreted as an endometriotic cyst within the lymph node. The authors note that the clinical significance is unknown, but the findings highlight a possible role for the lymphatic system in endometriosis pathogenesis, while acknowledging uncertainty. This paper is centrally about endometriosis — it uses a lymph node–involving clinical and histological case to discuss possible lymphatic involvement in disease pathogenesis.
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