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Chronic Renal Failure Presenting as Proximal Muscle Weakness in a Child

Departments of family practice and pediatrics East Carolina University School of Medicine, Greenville, NC

C. Tate Holbrook, MD

Departments of family practice and pediatrics East Carolina University School of Medicine, Greenville, NC

Jerome S. Haller, MD

Department of Psychiatrv and Neurology Tulane University School of Medicine, New Orleans, LA

A 13-year old boy presented with a three-year history of slowly progressive proximal muscle weakness, particularly involving the lower extremities. Chronic renal failure was uncovered in the course of his evaluation. Urologic investigation showed small and poorly functioning kidneys with a BUN of 118 mg/dL and a creatinine of 10.7 mg/dL. There were no anomalies of the proximal or distal collecting systems or history suggestive of recurrent urinary tract infection. The neurologic examination revealed proximal muscle weakness primarily of the lower extremities and especially of the proximal musculature of the pelvic girdle. Nerve conduction studies were normal. The electromyogram (EMG) showed high-voltage polyphasic potentials consistent with neurogenic muscle disease. A biopsy of the right quadriceps muscle demonstrated type II muscle fiber atrophy with histochemical staining. The patient's clinical findings, EMG studies, and muscle biopsy were not specific for either neurogenic or myopathic disease. Following a period of home peritoneal dialysis and renal transplantation, there was significant clinical improvement of the muscle weakness. (J Child Neurol 1986;1:50-52)

Journal of Child Neurology, Vol. 1, No. 1, 50-52 (1986)
DOI: 10.1177/088307388600100108


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