Amyloidosis results from the extracellular deposition of abnormal protein. Light chain amyloidosis is the most common type. Chronic diarrhea can be the presenting sign of gastrointestinal amyloidosis. Biopsy makes the diagnosis. Congo red staining of tissue shows apple-green birefringence under polarized light.

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Colonic Amyloidosis

  • Michelle D. Inkster,
  • Eric W. Willis,
  • James S. Wu

摘要

Amyloidosis results from the extracellular deposition of abnormal protein. Light chain amyloidosis is the most common type. Chronic diarrhea can be the presenting sign of gastrointestinal amyloidosis. Biopsy makes the diagnosis. Congo red staining of tissue shows apple-green birefringence under polarized light.