Brachial Plexus Involvement of Myeloid Sarcoma Detected by Reconstruction Magnetic Resonance Neurography.
Myeloid sarcoma is a rare hematological disorder that presents as an extramedullary mass of immature myeloid precursors. We herein present the case of a 57-year-old man with a seven-month history of progressive weakness in the right upper extremity. Reconstruction magnetic resonance neurography showed a marked enlargement of the right brachial plexus. Fluorodeoxyglucose positron emission tomography revealed a radioactive lesion in the sacrum, in addition to the right brachial plexus, and a biopsy of the sacrum revealed myeloid sarcoma. The brachial plexus lesion was also regarded as myeloid sarcoma because of the treatment response. Isolated myeloid sarcoma involving the brachial plexus is very rare and its diagnosis is difficult as there was neither a history of leukemia nor bone marrow involvement in this patient. In this case, reconstructed magnetic resonance neurography was useful for detecting the brachial plexus mass lesion which led to an early diagnosis and good recovery.
Department of Neurology, Graduate School of Medicine, Chiba University, Japan.
Atsuhiko
A
Sugiyama
Shoichi
S
Ito
Yasumasa
Y
Sugita
Jun-Ichiro
J
Shimada
Masahiro
M
Takeuchi
Shigeki
S
Hirano
Satoshi
S
Kuwabara
D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D001917:Brachial Plexus / Q000473:pathology*; D020516:Brachial Plexus Neuropathies / Q000150:complications / Q000188:drug therapy / Q000209:etiology* / Q000473:pathology; D042241:Early Diagnosis; D006801:Humans; D007278:Injections, Spinal; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D018908:Muscle Weakness / Q000209:etiology; D011843:Radiculopathy / Q000209:etiology* / Q000473:pathology; D012074:Remission Induction; D012447:Sacrum / Q000473:pathology; D023981:Sarcoma, Myeloid / Q000150:complications* / Q000175:diagnosis* / Q000188:drug therapy / Q000473:pathology; D016896:Treatment Outcome