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CC BY-NC-ND 4.0 · Arquivos Brasileiros de Neurocirurgia: Brazilian Neurosurgery 2025; 44(01): e42-e46
DOI: 10.1055/s-0045-1805013
Case Report

Lumbosacral Paraspinal Intramuscular Myxoma: Case Report and a Brief Literature Review

Mixoma Intramuscular Paraespinhal Lombossacral: Relato de caso e uma breve revisão da literatura
José Calasans dos Santos
1   Department of Neurosurgery, Hospital Unimed Sergipe, Aracajú, SE, Brazil.
,
Bruno Fernandes de Oliveira Santos 
2   Departament of Medicine, Universidade Tiradentes, Aracajú, SE, Brazil
,
Rômulo Augusto Andrade de Almeida 
3   Department of Neurosurgery, MD Anderson Cancer Center, Houston, Texas, United States
,
Andrei Fernandes Joaquim 
4   Department of Neurosurgery, University of Campinas (UNICAMP) Campinas, SP, Brazil
› Author Affiliations Funding This paper was not financially sponsored by any organization.
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Abstract

Myxoma is a tumor of mesenchymal origin with a slow-growing behavior and an unknown etiology, occurring in a variety of locations. It mostly affects the heart's chambers, but large skeletal muscles may also harbor these neoplasms (i.e., intramuscular myxoma [IM]) at a lower frequency. Lumbosacral paraspinal IM is very rare, and only five cases have been reported worldwide, with none in the Brazilian population. We present the first Brazilian case: a 38-year-old woman complaining of increased volume and pain in the right lumbosacral region in the last two months without radiculopathy and without focal neurological deficits. Imaging showed a large paraspinal lumbosacral tumor from the second lumbar vertebra to the second sacral segment. This was completely removed by a posterior approach. Histopathological revealed an intramuscular myxoma. Surveillance imaging for four months after surgery revealed no recurrence and the patient was doing well. Literature on the topic was reviewed.

Resumo

Mixoma é um tumor de origem mesenquimal com comportamento de crescimento lento e de etiologia desconhecida, ocorrendo em uma variedade de localidades. Afeta principalmente as câmaras cardíacas, mas grandes músculos esqueléticos também podem abrigar estas lesões (mixoma intramuscular [MI]). O MI paraespinhal lombossacro é bastante raro e apenas cinco casos foram relatados ao redor do mundo, nenhum no Brasil. Apresentamos o primeiro caso brasileiro: uma mulher de 38 anos com queixa de 2 meses de aumento de volume e dor na região lombossacra direita, sem radiculopatia e sem déficits neurológicos. Imagem demonstrou um grande tumor paraespinhal lombossacro desde a segunda vértebra lombar até o segundo segmento sacral. A lesão foi completamente removida por um acesso posterior. A histopatologia demonstrou mixoma intramuscular. O seguimento com imagem quatro meses após a cirurgia não revelou recorrência e a paciente apresentava boa evolução. A literatura sobre o assunto foi revisada.

Keywords

myxoma - spine - intramuscular - report

Palavras-chave

mixoma - coluna vertebral - intramuscular - relato

Local : Hospital Unimed Sergipe, Aracajú-SE, Brazil




Publication History

Received: 26 October 2023

Accepted: 21 October 2024

Article published online:
27 March 2025

© 2025. Sociedade Brasileira de Neurocirurgia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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