Post-appendectomy Typhlitis Initially Diagnosed as an Intra-peritoneal Residual Abscess until an Exploratory Re-laparotomy : An Abscess-like Finding of Inflammation of the Cecum on CT

We here report the case of a 10-year-old female who developed post-appendectomy typhlitis (PT) that could not be identified until an exploratory re-laparotomy. Computed tomography (CT) performed after the initial appendectomy showed an irregularly enhanced solid mass, including a homogeneous low-density lesion, at the corresponding site of the patient's cecum. The lesion was initially diagnosed to be an intra-peritoneal residual abscess.