Primary malignant fibrous histiocytoma of the greater omentum.

Primary malignant mesenchymal tumours of the greater omentum are rare. We report a 40-year old man with a painless abdominal lump of two months duration. At laparotomy, the mass was found to be arising from the greater omentum. A near-total omentectomy was done. Histological examination of the resected tumour revealed features consistent with malignant fibrous histiocytoma.