Necroqizing enterocolitis with pneumatosis intestinalis in systemic lupus erythematosus and polyarteritis.

Pneumatosis intestinalis was encountered in association with fatal necrotizing enterocolitis in systemic lupus erythematosus (SLE) and polyarteritis nodosa. The radiologic identification of mottled, bubbly, and linear collections of intramural intestinal gas distinguish this ominous complication from benign pneumatosis cystoides intestinalis. In the setting of intestinal vasculitis due to SLE or polyarteritis nodosa, these characteristic radiologic features indicate necrotizing enterocolitis. Since corticosteroids may mask clinical progression of the intestinal lesion, radiologic evaluation is essential in the overall management of the patient with intestinal vasculitis.