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CC BY-NC-ND 4.0 · Rev Bras Ortop (Sao Paulo)
DOI: 10.1055/s-0041-1731796
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Extraskeletal Intramuscular Chondroma of the Knee – Case Report and Review of the Literature[*]

Article in several languages: português | English
Balaji Zacharia 
1   Departamento de Ortopedia, Government Medical College, Kozhikkode, Kerala, Índia
,
Sanoj Poulose 
2   Departamento de Ortopedia, Jubilee Mission Medical College, Trichur, Kerala, Índia
,
Govind Sukumara Kurup 
2   Departamento de Ortopedia, Jubilee Mission Medical College, Trichur, Kerala, Índia
,
Siddarth Mahesh Pawaskar 
1   Departamento de Ortopedia, Government Medical College, Kozhikkode, Kerala, Índia
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Abstract

Extraskeletal chondromas are small nodular cartilaginous lesions not attached to bone or the periosteum. They are rare tumors commonly occurring in the hands and feet. The objective of the present study is to describe a case of extraskeletal intramuscular chondroma (EIC) in the left knee and the diagnostic challenges faced by us.

A 25-year-old female patient presented with slow-growing swelling in the left knee for 2 years. Clinically, the swelling was arising from the quadriceps muscle. We considered possibilities such as rhabdomyoma, neurofibroma, and intramuscular lipoma. Imaging studies suggested a benign fatty tumor. She was treated by excision. Microscopy was consistent with EIC without recurrence.

A rare entity, clinically, EIC can mimic other benign soft-tissue tumors. Histopathology exams can provide a definitive diagnosis. The excision of the tumor is curative.

Keywords

chondroma - chondromatosis, synovial - knee - soft tissue neoplasms

Financial Support

There was no financial support from public, commercial, or non-profit sources.


* Work developed at the Department of Orthopedics, Jubilee Mission Medical College, Trichur, Kerala, India




Publication History

Received: 31 January 2021

Accepted: 07 April 2021

Article published online:
11 September 2021

© 2021. Sociedade Brasileira de Ortopedia e Traumatologia. 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 commecial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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