Sonographic appearance of appendicitis in a neutropenic pediatric patient after inversion appendectomy

The technique of inversion-ligation appendectomy is used by some surgeons t o eliminate the risk of peritoneal contamination as the result of incidenta l appendectomy during an otherwise clean surgical procedure. In most cases, the intussuscepted appendix necroses and sloughs into the cecum after seve ral days. We present the first report of the ultrasonographic appearance of a retained, inflamed appendix, which occurred in a neutropenic pediatric p atient 15 months after inversion appendectomy. Our case illustrates the imp ortance of a complete surgical history for the interpretation of abnormal s onographic findings of the cecum.