PT  - JOURNAL ARTICLE
AU  - J Cinnamon
AU  - A E Slonim
AU  - K S Black
AU  - M T Gorey
AU  - D M Scuderi
AU  - R A Hyman
TI  - Evaluation of the lumbar spine in patients with glycogen storage disease: CT demonstration of patterns of paraspinal muscle atrophy.
DP  - 1991 Nov 01
TA  - American Journal of Neuroradiology
PG  - 1099--1103
VI  - 12
IP  - 6
4099  - http://www.ajnr.org/content/12/6/1099.short
4100  - http://www.ajnr.org/content/12/6/1099.full
SO  - Am. J. Neuroradiol.1991 Nov 01; 12
AB  - CT studies of the lumbar spine were performed in 19 patients with glycogen storage disease. Nine of 10 patients with McArdle's disease and seven of nine patients with acid maltase deficiency demonstrated posterior paraspinal muscle atrophy out of proportion to their ages. In addition, the psoas muscles were spared in all 10 patients with McArdle's disease and were involved with atrophy in seven of the nine patients with acid maltase deficiency. We conclude that when patients with low back pain-or asymptomatic patients-demonstrate otherwise unexplained atrophy of the paraspinal muscles the diagnosis of glycogen storage disease should be considered. Furthermore, when the psoas muscles are spared, the specific diagnosis of McArdle's disease is suggested.