Case of the Month #56 The Protein Puzzle: A Case of Progressive Multi-Organ Dysfunction

Published 03/04/2025

What are the challenges in diagnosing amyloidosis?

Amyloidosis is widely recognized as an underdiagnosed condition with several key challenges:

  • Delayed diagnosis - Recent evidence indicates median delays of 7-24 months from symptom onset to diagnosis
  • Diagnostic overlap - Clinical features mimic more common conditions (heart failure, chronic kidney disease)
  • Non-specific early symptoms - Fatigue, weight loss, and dyspnea are often attributed to age or comorbidities
  • Phenotypic heterogeneity - Variable presentation depending on organ involvement

  • Limited awareness - Many clinicians lack familiarity with the condition, particularly non-specialists

  • "Red flag" symptoms often missed - Key features like periorbital purpura, macroglossia, and shoulder pad sign overlooked

  • Historical  associations  -  Outdated  perception  that amyloidosis is rare and untreatable leads to diagnostic nihilism

Current evidence suggests that cardiac amyloidosis is diagnosed in only about 18% of patients at initial cardiac evaluation, with average diagnostic delays exceeding 15 months in those with ATTR amyloidosis.