When viewing this topic in a different language, you may notice some differences in the way the content is structured, but it still reflects the latest evidence-based guidance.

Gamopatia monoclonal de significado indeterminado

Evidencia revisada por última vez: 28 Mar 2026
Tema actualizado por última vez: 10 May 2023

Resumen

Definición

Anamnesis y examen

Principales factores de diagnóstico

  • em situação de risco demográfico (homem, idade > 50 anos, de ascendência africana)
  • clinicamente assintomática
  • história familiar positiva
  • história de exposição à radiação.
  • história de exposição a pesticidas
Todos los datos

Otros factores de diagnóstico

  • história de imunossupressão ou infecções
  • presença de neuropatia periférica
Todos los datos

Factores de riesgo

  • sexo masculino
  • idade >50 anos
  • Ancestralidade africana
  • história familiar de MGUS ou mieloma múltiplo
  • doenças mediadas imunologicamente
  • exposição à radiação
  • exposição a pesticidas
Todos los datos

Pruebas diagnósticas

Primeras pruebas diagnósticas para solicitar

  • eletroforese com imunofixação e medição de imunoglobulinas séricas
  • Hemograma completo com diferencial
  • cálcio sérico
  • creatinina sérica
  • urinálise e coleta de urina de 24 horas com eletroforese e imunofixação
  • ensaio de cadeias leves livres no soro
  • pesquisa de metástase óssea (raios X convencionais ou TC do corpo inteiro de baixa dose)
Todos los datos

Pruebas diagnósticas que deben considerarse

  • biópsia e/ou aspiração da medula óssea
  • densitometria óssea
  • ressonância nuclear magnética (RNM)
  • tomografia por emissão de pósitrons (PET)
Todos los datos

Algoritmo de tratamiento

En curso

gamopatia monoclonal de significado indeterminado (MGUS) confirmada

Colaboradores

Autores

Shaji Kumar, MD

Professor of Medicine

Division of Hematology

Mayo Clinic

Rochester

MN

Declarações

SK has received research funding for clinical trials to the institution from Abbvie, Amgen, Allogene, Astra-Zeneca, BMS, Carsgen, GSK, Janssen, Novartis, Roche-Genentech, Takeda and Regeneron. SK has participated in consulting and advisory board activities (with no personal payments) for Abbvie, Amgen, BMS, Janssen, Roche-Genentech, Takeda, Astra-Zeneca, Bluebird Bio, Secura Biotherapeutics, Trillium, Loxo Oncology, K36, Sanofi, ArcellX, and (with personal payment) Oncopeptides, Beigene and Antengene.

Agradecimentos

Professor Shaji Kumar would like to gratefully acknowledge Dr Ola Landgren, a previous contributor to this topic.

Declarações

OL is an author of several references cited in this topic.

Peer reviewers

Daniel Catovsky, MD

Consultant Haemato-Oncologist

Section of Haemato-Oncology

Brookes Lawley Institute of Cancer

Sutton

UK

Disclosures

DC declares that he has no competing interests.

Peer reviewer acknowledgements

BMJ Best Practice topics are updated on a rolling basis in line with developments in evidence and guidance. The peer reviewers listed here have reviewed the content at least once during the history of the topic.

Disclosures

Peer reviewer affiliations and disclosures pertain to the time of the review.

References

Our in-house evidence and editorial teams collaborate with international expert contributors and peer reviewers to ensure that we provide access to the most clinically relevant information possible.

Key articles

Rajkumar SV, Dimopoulos MA, Palumbo A, et al. International Myeloma Working Group updated criteria for the diagnosis of multiple myeloma. Lancet Oncol. 2014 Nov;15(12):e538-48.Full text  Abstract

van de Donk NW, Palumbo A, Johnsen HE, et al. The clinical relevance and management of monoclonal gammopathy of undetermined significance and related disorders: recommendations from the European Myeloma Network. Haematologica. 2014 Jun;99(6):984-96.Full text  Abstract

Kyle RA, Durie BG, Rajkumar SV, et al; International Myeloma Working Group. Monoclonal gammopathy of undetermined significance (MGUS) and smoldering (asymptomatic) multiple myeloma: IMWG consensus perspectives risk factors for progression and guidelines for monitoring and management. Leukemia. 2010 Jun;24(6):1121-7.Full text  Abstract

Bird J, Behrens J, Westin J, et al. UK Myeloma Forum (UKMF) and Nordic Myeloma Study Group (NMSG): guidelines for the investigation of newly detected M-proteins and the management of monoclonal gammopathy of undetermined significance (MGUS). Br J Haematol. 2009 Oct;147(1):22-42.Full text  Abstract

Reference articles

A full list of sources referenced in this topic is available to users with access to all of BMJ Best Practice.
  • Gamopatia monoclonal de significado indeterminado images
  • Differentials

    • Mieloma múltiplo ou indolente
    • Amiloidose
    • Macroglobulinemia de Waldenström
    More Differentials
  • Guidelines

    • The clinical relevance and management of monoclonal gammopathy of undetermined significance and related disorders
    • International Myeloma Working Group updated criteria for the diagnosis of multiple myeloma
    More Guidelines
  • Patient information

    Gamopatia monoclonal de significado indeterminado

    More Patient information
  • padlock-lockedLog in or subscribe to access all of BMJ Best Practice

El uso de este contenido está sujeto a nuestra cláusula de exención de responsabilidad