Pleomorphic sarcoma of thigh with long survival.

In general it is fairly true to say that the prognosis in anaplastic malignant tumours of the soft tissues of the skeletal muscles is poor, but surprising exceptions do occasionally occur. The following two cases are examples of such exceptions and are reported because of their unexpected, long, and recurrence-free survival after local excision only. Both were rapidly growing, highly anaplastic tumours, of bizarre histological type, and thus were given a poor prognosis when first encountered.