Skeletal muscle

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Skeletal muscle is a type of striated muscle under voluntary control.

Skeletal muscle. HPS stain. (WC/Nephron)

Muscle biopsies are dealt with in the article neuromuscular pathology.

General

  • Common incidental finding on biopsies and resections.

Anatomy and histology

See Neuromuscular pathology#Muscle structure/histology

Microscopic

Features:

  • Long fibres with striations - key feature.
    • Striations may be difficult to appreciate on cytology.
  • Peripheral nuclei.

DDx:

Images

Cytology

  • SM - intermed. mag.

  • SM - high mag.

  • SM - very high mag.

  • SM - very high mag.

  • SM - high mag.

  • SM - high mag.

  • SM - very high mag.

  • SM - very high mag.

See also

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