[A Case of Acute Appendicitisdiagnosed as Sessile Serrated Adenoma/Polyp by Histopathological Findings].

A 67-year-old woman presented to a local clinic with right lower abdominal pain. Abdominal ultrasonography revealed an enlarged appendix, and the patient was referred to our surgical department for further evaluation and treatment. The patient was diagnosed with acute appendicitis based on an abdominal plain CT scan, and laparoscopic appendectomy was performed. Histopathological examination of resected appendix revealed sessile serrated adenoma/polyp(SSA/P), and the patient is under careful follow-up in our hospital. Eight months after surgery, the patient did not show any obvious signs of recurrence. SSA/P is classified as serrated lesions of the colon. Appendiceal SSA/P are rare.