Unusual presentation of a familiar pathology: chronic appendicitis.

We present a case of a man who experienced night sweats, abdominal pain and fever for over 3 months, with incomplete response to broad-spectrum intravenous antibiotics. Although CT imaging was insufficient to identify the cause for his chronic abdominal pain, the abnormality of a 'misty mesentery' was crucial in guiding further investigation. The final diagnosis of chronic appendicitis was made through laparoscopic and pathological examination. This case highlights the utility of a collaborative diagnostic effort between disciplines. Chronic appendicitis can cause lingering abdominal pain. Early recognition and appropriate referral can save patients months and even years of unnecessary suffering. 2016 BMJ Publishing Group Ltd.