Soft tissue giant cell tumour of low malignant potential arising in the masseter--a rare entity in the head and neck.

We report a case of a soft tissue giant cell tumour of low malignant potential that occurred in the masseter muscle. This is exceptionally rare and we know of only four previously published cases in the head and neck. Differentiation of this tumour from its malignant counterpart is important as management differs considerably. Because of the possibility of local recurrence, clinical follow up with or without postoperative radiotherapy is advised after excision.