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Dermatology Online Journal

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Nodular amyloidosis

  • Author(s): White, Forrest;
  • Shvartsbeyn, Marianna;
  • Meehan, Shane A;
  • Ramachandran, Sarika
  • et al.

Nodular amyloidosis is the rarest form of primary cutaneous amyloidosis. We report the case of a 74-year-old woman with an eight-year history of asymptomatic, hyperpigmented plaques on the pretibial areas. A skin biopsy specimen showed deposits of amorphous eosinophilic material that extended throughout the dermis with apple-green birefringence with a Congo-red stain, which established a diagnosis of nodular amyloidosis. Patients with nodular amyloidosis should be evaluated for systemic disease and followed appropriately due to a small risk of progression to systemic amyloidosis.

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