Neuromuscular

Endstage Muscle: Denervation



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


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

VvG stain

Muscle fibers
  Small muscle fibers dark stained on NADH

NADH stain

Muscle fibers
  Fiber types: Dark at ATPase pH 9.4

ATPase pH 9.4 stain

Muscle fibers
  Lipofuscin granules: Concentrated in small muscle fibers

Esterase stain

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References
1.

4/15/2019