Open Access
CC BY 4.0 · Rev Bras Ortop (Sao Paulo) 2024; 59(S 01): e17-e21
DOI: 10.1055/s-0041-1735140
Relato de Caso

High-grade Pleomorphic Sarcoma Associated with Metallosis in a Patient with Total Hip Arthroplasty

Article in several languages: português | English
1   Centro de Cirurgia do Quadril, Instituto Nacional de Traumatologia e Ortopedia, Rio de Janeiro, RJ, Brasil
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2   Centro de Ortopedia Oncológica, Instituto Nacional de Traumatologia e Ortopedia, Rio de Janeiro, RJ, Brasil
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1   Centro de Cirurgia do Quadril, Instituto Nacional de Traumatologia e Ortopedia, Rio de Janeiro, RJ, Brasil
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3   Divisão de Pesquisa do Instituto Nacional de Traumatologia e Ortopedia, Rio de Janeiro, RJ, Brasil
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3   Divisão de Pesquisa do Instituto Nacional de Traumatologia e Ortopedia, Rio de Janeiro, RJ, Brasil
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3   Divisão de Pesquisa do Instituto Nacional de Traumatologia e Ortopedia, Rio de Janeiro, RJ, Brasil
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Abstract

Although the relationship between hip arthroplasty and the development of sarcoma was first described in the literature about forty years ago, this association is extremely rare. In the present case report, we describe the association between orthopedic implants and soft tissue sarcoma in a 79-year-old man who underwent primary total hip arthroplasty (THA) for coxarthrosis 24 years ago. In the present case report, we describe the clinical evolution and the radiographic and histopathological findings of the lesion. In the intraoperative period of the second revision surgery, loosening of the acetabular and femoral components in association with extensive areas of necrosis and metallosis was evidenced. We performed debridement of the hip and right thigh region and removed the implants. Due to the extent of the lesion and to necrosis, it was not possible to perform a new joint reconstruction. The histopathological diagnosis of high-grade undifferentiated pleomorphic sarcoma associated with extensive areas of metallosis was confirmed in tissue adjacent to the implant. The patient developed pulmonary metastases and died 6 months after the diagnosis. Despite the rarity of this association, sarcomas should be considered in the differential diagnosis of aseptic loosening, especially in the presence of metallosis in the peri-implant tissue. To our knowledge, the 24-year latency period between primary THA and the establishment of a sarcoma diagnosis is one of the longest reported to date.

Study carried out at the Instituto Nacional de Traumatologia e Ortopedia (National Institute of Traumatology and Orthopedics), Rio de Janeiro, RJ, Brazil.




Publication History

Received: 10 December 2020

Accepted: 02 June 2021

Article published online:
13 October 2021

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