MUSCLE - Forearm - Sarcoma

The reverse of the specimen shows the ulna and associated muscles in the forearm. The muscles on the posterior surface of the ulna are expanded by circumscribed nodules, some 5 x 3 cm. in size, exposed at the cut surface; the haemorrhagic area on the outer side of the tumour probably represents a biopsy area. The tumour is flesh-coloured and appears to be arising in muscle.