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Endstage Muscle: Denervation

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Gomori trichrome stain

Pathology: Endstage muscle

Muscle fibers
  Size: Small or Pyknotic nuclear clumps
Connective Tissue
  Perimysium: Most replaced by fat
  Endomysium: Increased; Pseudomyopathic
Vessels: Large
  Preserved within Perimysial fat

VvG stain

H&E stain

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VvG stain

Muscle fibers
  Size: Small; Varied
Connective Tissue
  Endomysium: Increased; Pseudomyopathic

VvG stain

VvG stain

Muscle fibers
  Size: Small; Varied
Connective Tissue
  Endomysium: Increased; Pseudomyopathic

VvG stain

H&E stain

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VvG stain

Vessels
  Artery: Normal
  Vein: Mildly thick wall

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NADH stain

Muscle fibers
  Small muscle fibers dark stained on NADH

NADH stain

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Muscle fibers
  Fiber types: Dark at ATPase pH 9.4

ATPase pH 9.4 stain

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Muscle fibers
  Lipofuscin granules: Concentrated in small muscle fibers

Esterase stain

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Return to: Neuromuscular Home Page

References
1.

8/6/2022