Intramuscular malignant granular cell tumor.
We describe a malignant granular cell tumor in the semimembranosus muscle of a 61-year-old woman. Magnetic resonance images disclosed a tumor with intermediate and low signal intensity on both T1- and T2-weighted images, measuring about 7 x 4 x 4 cm in size. The patient showed an uneventful clinical course during a 30-month follow-up period after the wide excision. The pertinent findings in making the diagnosis of malignant granular cell tumor are large size, intramuscular location, and mitosis including an atypical mitosis.
Tsuchida
T
T
Department of Orthopedic Surgery, Akita University School of Medicine, Japan.
Okada
K
K
Itoi
E
E
Sato
T
T
Sato
K
K
D001706:Biopsy; D005260:Female; D005500:Follow-Up Studies; D016586:Granular Cell Tumor / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D019042:Muscle Neoplasms / Q000175:diagnosis* / Q000601:surgery