A case of endometriosis of the appendix presenting as acute appendicitis.

The paper reports a 44-year-old case of appendiceal endometriosis presenting clinically as an appendiceal mass with acute appendicitis–like symptoms, including fever, elevated white blood cell count, and CRP. Imaging and endoscopic evaluations were consistent with a tumor-forming appendicitis, and the patient underwent appendectomy; the appendix was enlarged and hardened with marked wall thickening. Histology showed endometrial glands and stroma proliferating from the muscularis propria to the subserosa with focal bleeding and strong inflammatory cell infiltration in the subserosal fat, while the mucosal surface was relatively normal; the authors note that postoperative review of the history provided supportive features such as right lower abdominal pain without nausea/vomiting and onset closely matching the menstrual period. This paper is centrally about endometriosis — it describes appendiceal endometriosis that mimicked acute appendicitis.

Read from the paper's body, not the abstract. Not a substitute for reading the paper. No clinical advice. How this works