Púrpura: manifestação de amiloidose sistémica primária.

Autores

  • Sara Lestre Hospital Santo António dos Capuchos, Lisboa.
  • Andreia Gonçalves
  • Alexandre João
  • Ana Ferreira
  • Margarida Apetato

DOI:

https://doi.org/10.20344/amp.1691

Resumo

Primary Systemic Amyloidosis (AL) is the most frequent form of systemic amyloidosis and its morbilility is associated with immunoglobulin light chains deposition in vital organs. The mucocutaneous manifestations occur in about 30-40% of the cases and are important in diagnostic suspicion, once they appear in early stages of disease. We report a 71-years-old female patient, with disseminated purpura and cutaneous fragility with 6 months of evolution, accompanied by recent complaints of dysphagy. The first laboratory evaluation didn't show any alterations. The histological and immunohistochemical study of subcutaneous abdominal fat and skin biopsy showed lambda type amyloid protein. In the systemic work-up, we highlight a proteinúria > 1g/24h with Bence Jones proteins and the presence of monoclonal immunoglobulin light chain (lambda type) in serum immunoelectrophoresis. With the diagnosis of primary systemic amyloidosis, treatment with prednisolone and melphalan was started.

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1.
Lestre S, Gonçalves A, João A, Ferreira A, Apetato M. Púrpura: manifestação de amiloidose sistémica primária. Acta Med Port [Internet]. 30 de Junho de 2009 [citado 18 de Julho de 2024];22(3):307-12. Disponível em: https://actamedicaportuguesa.com/revista/index.php/amp/article/view/1691

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