The experience at this university between 1954 and 1978 included 96 granular cell myoblastomas in 67 patients. The unusual locations of the tumors were the breast, bronchus, vocal cord, stomach and rectus sheath. An extremely rare invasive squamous carcinoma developed from a lesion of the larynx with pseudoepitheliomatous hyperplasia of the overlying dpithelium. Two patients with malignant granular cell myoblastoma have been encountered.

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