The specimen is an apparently encapsulated nodular lesion; the cut surface shows white tumour in
which there are areas of haemorrhage.
This lesion is from a man of 20 who presented with a swelling on the medial side of the
left leg in relationship to the medial belly of gastrocnemius. At operation the tumour was in the
position of a ganglion of the semi-membranosis bursa. Histologically the lesion was a biphasic
synovial sarcoma. Nine months later there were no signs of local recurrence and there was no
evidence of metastatic disease.