A Case Report on Appendicular Endometriosis

Background: Appendicular Endometriosis represents less than 1% of all pelvic endometriosis cases. It manifests with pain in right iliac fossa and bear resemblance to acute appendicitis. Definitive diagnosis is possible only after histopathological examination of excised appendix. Case presentation: We report a rare case of Appendicular Endometriosis (AE) in a 38 years old non-married female, otherwise healthy, came to emergency room with less than 24 hours lower abdominal pain associated with nausea but no vomiting. All other systemic review was unremarkable. Patient has no positive medical or surgical history. Blood investigations were normal and abdominal ultrasound US showed edematous wall thickening of the appendix with 12 mm distended lumen. Laparoscopic appendicectomy was performed with incidental finding of blood-tinged fluid in the pelvis and multiple prominent fibroids of the uterus, the appendix was inflamed, and appendectomy done. Postoperative recovery course was uneventful. The final histopathological examination confirmed endometriosis of appendix. Conclusion: AE is a rare entity and almost always diagnosed after histopathological examination. it should be included in the differential diagnosis of acute abdominal pain, especially when women of childbearing age present with clinical symptoms of acute appendicitis.