AIM:To study computed tomography (CT) �eatures of abdominal malignant fibrous histiocytoma (MFH) in various rare locations.
METHODS:We retroprospectively identi�ied cases o� �FH involving the abdominal cavity. �articular attention was paid to details regarding imaging �eatures and histological types.
RESULTS:The study population consisted o� seven men and one woman, with a mean age o� 52.5 years. Seven patients had some physical symptoms, while one was incidentally detected. The sites o� origin were liver (n = 3), greater omentum (n = 1), superior mesentery (n = 1), ileum (n = 1), right psoas muscle (n = 1) and right kidney (n = 1). With the exception o� the ileum lesion, all were o� huge size. The contour o� the lesions was more or less clear. Foci o� necrosis were present in six lesions (n = 6). On plain CT scan, all lesions were hypo to iso dense. The lesion in the greater omentum was cystic. One lesion (n = 1) showed signi�icant enhancement and the cystic lesion showed mild peripheral enhancement. An abundance o� blood vessels surrounding the mass was seen in two lesions (n = 2) and both were o� the in�lammatory variety. �athological examination revealed stori�orm-pleomorphic variety (n = 4), inflammatory variety (n = 3) and myxoid variety (n = 1). Two of the patients with inflammatory MFH had a clinical presentation o� �ever and one was a�ebrile, however, blood investigations in all three showed leukocytosis.CONCLUSION: �rimary �FHs o� the abdominal viscera and gastrointestinal tract are generally huge so�t tissue masses containing areas o� low attenuation and mild to moderate contrast enhancement.