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Vastus lateralis muscle biopsy of a 9-year-old boy (2)

(A and B) Two regions of the biopsy stained with modified Gomori trichrome to show absence of nemaline rods from both size populations of myofibers, central nuclei, or other alterations. Magnification x 250. (Contributed by Dr. Harvey Sarnat.)

Associated Disorders

  • Calpain 3 deficiency
  • Cerebellar hypoplasia
  • Cori-Forbes disease
  • Debrancher enzyme deficiency
  • Emery-Dreifuss X-linked muscular dystrophy
  • Krabbe globoid cell leukodystrophy
  • Mitochondrial cytopathies
  • Moebius syndrome
  • Multiple sulfatase deficiencies
  • Myasthenia gravis, congenital
  • Nemaline rod myopathy
  • PHOX2B mutation
  • Pompe disease
  • Trendelenburg gait
  • Ullrich (collagen VI) muscular dystrophy