Changing clinical and roentgenographic patterns of necrotizing enterocolitis

Necrotizing enterocolitis (NEC) occasionally deviates from the classical presentation of the disease. Small bowel dilatation and pneumatosis are frequently present prior to the actual onset of the clinical presentation. Pneumatosis intestinalis, an important diagnostic sign of NEC, is quite variable; it may be present, persist, worsen, or disappear; or at times it may not be present at all. A severe complication of necrotizing enterocolitis is...