Muscle hypertrophy due to scarring of the S1 nerve root.
Segmental muscle enlargement occurs in a variety of neurogenic conditions. We present a patient with calf hypertrophy, likely produced by continuous neuromuscular irritability and compensatory type 1 and type 2 muscle fiber hypertrophy. The underlying lesion of the S1 nerve root was caused by scarring, which could be demonstrated by Gadolinum enhanced, fat saturated magnetic resonance imaging. Thus, the application of this technique is recommended in otherwise etiologically unclear cases of neurogenic muscular lesions in order to detect chronic nerve root pathology.
Department of Neurology, Friedrich Alexander University of Erlangen-Nürnberg, Germany. dieter.heuss@neuro.med.uni-erlangen.de
D
D
Heuss
S
S
Schober
K
K
Eberhardt
S
S
Probst-Cousin
C
C
Kayser
M
M
Hecht
W
W
Huk
B
B
Neundörfer
D000328:Adult; D002921:Cicatrix / Q000150:complications* / Q000175:diagnosis; D003287:Contrast Media; D004576:Electromyography; D019786:Gadolinium DTPA; D006801:Humans; D006984:Hypertrophy / Q000209:etiology; D008279:Magnetic Resonance Imaging; D008297:Male; D009132:Muscles / Q000473:pathology*; D010523:Peripheral Nervous System Diseases / Q000150:complications* / Q000175:diagnosis; D011843:Radiculopathy / Q000150:complications; D012447:Sacrum; D013126:Spinal Nerve Roots / Q000473:pathology; D014057:Tomography, X-Ray Computed
D003287:Contrast Media; D019786:Gadolinium DTPA