Fig. 20From: Omental cakes: unusual aetiologies and CT appearancesGastrointestinal stromal tumour (GIST) in a 45-year-old man. CT image shows large, cystic-appearing masses (arrows), some involving the omentum, and a large volume of ascites. The patient had been treated with imatinib mesylate (Gleevec; Novartis, New York, NY) that led to the cystic changes. There is a subcutaneous implant in the right anterior abdominal wallBack to article page