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Although in most cases the diagnosis of acute appendicitis is straightforward, not all patients experience typical symptoms and other conditions may mimic appendicitis. In fact, 15-25% of appendectomies involve the removal of a normal appendix. To date, there is no literature evidence that herniation pit (HP) may mimic acute appendicitis. We report a case of a 30 year old woman admitted to the Emergency Department for severe, acute pain developing a few hours earlier in the lower right fossa, with irradiaton to the right thigh. She did not present any fever, nausea or vomiting, Blumberg's sign was absent but the psoas sign and obturator sign were both positive. WBC count was 16,000/mm3 and the Alvarado score was 4. Biochemistry profile was normal. US was unclear and transvaginal ultrasound did not show any gynecological disease. CT scan showed only an herniation pit of the right femoral neck. The patient was admitted to an orthopedic ward and treated with anti-inflammatory therapy. She was discharged after 2 days without any pain and in good conditions. Our case demonstrates that herniation pits of the right femoral neck should be considered a potential cause of right lower abdominal pain mimicking acute appendicitis, particularly if the psoas sign and obturator sign are positive and the patient is physically active.

Case herniation pit of the femoral neck mimic an acute appendicitis? A case report