Abstract:Background: The incidence of malignant granular cell tumor, an extremely rare Schwann cell-derived tumor with a poor prognosis, is reported to be approximately 0.2% of malignant soft tissue tumors. We report a case of a malignant granular cell tumor originating from the ulnar nerve.Case presentation: A 71-year-old woman presented with a mass in her right forearm. Magnetic resonance imaging showed a tumor with homogenous intensity of T1 and heterogeneous hyperintensity of T2, continuous with the ulnar nerve. In… Show more
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