Fig. 33

Vasculitis (lupus). Abdominal CT of a patient with systemic lupus erythematosus and antiphospholipid syndrome (a). There is evidence of multifocal thickening of several bowel loops with a target appearance (arrowheads), including the stomach, colon and D2 (arrows). Note also bilateral hydronephrosis (asterisks in b). Abdominal CT (c) of the same patient following 3 weeks of steroid treatment with no clinical improvement revealed resolution of some of the previous affected segments, while other bowel segments showed wall thickening for the first time