Malignant Fibrous Histiocytoma of Shoulder Masquerading as Adhesive Capsulities

Malignant fibrous histiocytoma (MFH) is a rare malignant primary bone tumour that contains a mixture of fibrogenic cells that are histologically similar to histocytes. Histologically MFH appear as large multi-nucleated malignant cells, with abundant cytoplasmic nuclei. Incidence: MFH constitutes less than 2 % of all primary malignant bone tumours. Common in males. A number of histological subtypes have been described including (1, 2) � storiform-pleomorphic: most common 50-60 % � myxoid: 25 %, myxofibrosarcoma � inflammatory: 5-10 % � giant cell: 5-10 % � angiomatoid Location: distal femur (most common) greater thanproximal tibiagreater thanproximal humerus (rare).