M221 FOOD PROTEIN-INDUCED ENTEROCOLITIS SYNDROME MASQUERADING AS INTUSSUSCEPTION

Abstract

Food protein-induced enterocolitis syndrome (FPIES) is a non-IgE mediated food hypersensitivity that typically affects infants. After ingestion of the culprit protein, a delayed onset of vomiting, lethargy, pallor, and bloody diarrhea can occur, which can be life-threatening. The differential diagnosis for acute vomiting in an infant is broad, making this diagnosis challenging. We present a patient in whom FPIES was initially thought to be intussusception, a common cause of childhood bowel obstruction where the intestines telescopes into itself, causing a delay in diagnosis and reoccurrence of symptoms.