Patterns of pathology in muscle

H & E stain

H & E stain
Atrophic muscle fibers
  • Especially common in perifascicular regions
  • May be near perimysial cellularity (Arrow)
  • Often basophilic
  • Shape: Rounded or Polygonal
  • May contain vacuoles

H & E stain

H & E stain
Vacuoles: Rimmed

H & E stain

PAS stain
Cells in perimysium: Large; PAS positive

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