Osteosarcoma of the Maxilla and Maxillary Sinus Mimicking Post-Implant Infectious Complication: A Case Report

Autores

  • Thiago Miura Inacio Multiprofessional Residency Program in Cancer Care, Department of Dentistry and Stomatology, Hospital das Clínicas, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil. https://orcid.org/0009-0005-5583-3186
  • Mariana Andrade Costa Department of Dentistry and Stomatology, Hospital das Clínicas, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil. https://orcid.org/0000-0001-6689-2695
  • Maria Júlia Pagliarone Graduate Program in Clinical Oncology and Cell Therapy, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil. https://orcid.org/0000-0001-6687-4411
  • Tatiane Cristina Ferrari Department of Dentistry and Stomatology, Hospital das Clínicas, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil. https://orcid.org/0000-0002-1074-8181
  • Rodrigo Braz Campos Department of Pathology, Hospital das Clínicas, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil. https://orcid.org/0009-0001-9691-2156
  • Graziela Vieira Cavalcanti Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil. https://orcid.org/0000-0002-7349-5273
  • Hilton Marcos Alves Ricz Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil. https://orcid.org/0000-0002-3019-8949
  • Edwin Tomashiro Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil. https://orcid.org/0000-0002-3153-6292
  • Leandro Dorigan de Macedo Department of Dentistry and Stomatology, Hospital das Clínicas, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil. https://orcid.org/0000-0001-9708-5845

DOI:

https://doi.org/10.5327/2525-5711.469

Palavras-chave:

Osteosarcoma, Maxilla, Maxillary Sinus, Dental Implants, Oral Neoplasms

Resumo

Osteosarcoma is a rare malignant primary bone tumor in the gnathic bones and presents a locally aggressive behavior. Its diagnosis may be particularly challenging when it arises in uncommon sites such as the maxilla and maxillary sinus, especially in the presence of local conditions that simulate inflammatory or infectious processes. This study reports a case of high-grade osteosarcoma involving the maxilla and maxillary sinus in a female patient, initially misinterpreted as an infectious complication related to bone graft material extrusion following maxillary sinus floor elevation for dental implant placement. The patient presented delayed diagnosis and unfavorable clinical evolution, undergoing radical surgical resection followed by adjuvant radiotherapy and later palliative chemotherapy. This case highlights the diagnostic complexity of maxillofacial osteosarcomas and reinforces the importance of a multidisciplinary approach, careful interpretation of imaging findings, and early biopsy in atypical presentations to improve disease control and prognosis.

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Publicado

2026-08-24

Como Citar

1.
Inacio TM, Costa MA, Pagliarone MJ, Ferrari TC, Campos RB, Cavalcanti GV, et al. Osteosarcoma of the Maxilla and Maxillary Sinus Mimicking Post-Implant Infectious Complication: A Case Report. J Oral Diagn [Internet]. 24º de agosto de 2026 [citado 16º de setembro de 2026];. Disponível em: https://jordi.com.br/revista/article/view/469

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In Press

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Licença

Copyright (c) 2026 Thiago Miura Inacio, Mariana Andrade Costa , Maria Júlia Pagliarone, Tatiane Cristina Ferrari, Rodrigo Braz Campos, Graziela Vieira Cavalcanti, Hilton Marcos Alves Ricz, Edwin Tomashiro, Leandro Dorigan de Macedo

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Este trabalho está licenciado sob uma licença Creative Commons Attribution 4.0 International License.