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Case Report
Primary malignant giant-cell tumor of bone: Case report of a rare clinical condition with an atypical clinical course
1 Orthopedics Department, Centro Hospitalar Lisboa Norte, Lisbon, Portugal
2 Pathology Department, Centro Hospitalar Lisboa Norte, Lisbon, Portugal
Address correspondence to:
Joaquim Soares do Brito
MD, MSc, FEBOT, Centro Hospitalar Lisboa Norte, EPE. Avenida Professor Egas Moniz, 1649-035 Lisbon,
Portugal
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Article ID: 100081Z10DF2021
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Ferreira D, Spranger A, Almeida P, Presa D, Portela J, do Brito JS. Primary malignant giant-cell tumor of bone: Case report of a rare clinical condition with an atypical clinical course. J Case Rep Images Oncology 2021;7:100081Z10DF2021.ABSTRACT
Introduction: A primary malignant giant-cell tumor of bone (PMGCT) is an extremely rare disease and usually presents with a better prognosis than its secondary counterpart does (secondary malignant giant-cell tumor of bone or SMGCT).
Case Report: We present a case of a highly atypical PMGCT of the proximal left tibia, with extremely fast progression, pathological fracture, fungation, and patient death.
Conclusion: This clinical case is an example of the most extreme and aggressive biological behavior that could arise with a PMGCT. These usually have a better prognosis than most, among malignant giant-cell tumors. This case highlights the need for a low threshold of suspicion for malignant transformation when giant-cell tumors have an unusual presentation.
Keywords: Diagnosis, Malignant giant-cell tumor, Management, Outcomes
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Author Contributions
David Ferreira - Substantial contributions to conception and design, Drafting the article, Revising it critically for important intellectual content, Final approval of the version to be published
André Spranger - Substantial contributions to conception and design, Interpretation of data, Revising it critically for important intellectual content, Final approval of the version to be published
Paulo Almeida - Substantial contributions to conception and design, Analysis of data, Revising it critically for important intellectual content, Final approval of the version to be published
Dolores Presa - Acquisition of data, Revising it critically for important intellectual content, Final approval of the version to be published
José Portela - Substantial contributions to conception and design, Analysis of data, Interpretation of data, Revising it critically for important intellectual content, Final approval of the version to be published
Joaquim Soares do Brito - Substantial contributions to conception and design, Analysis of data, Drafting the article, Revising it critically for important intellectual content, Final approval of the version to be published
Guaranter of SubmissionThe corresponding author is the guarantor of submission.
Source of SupportNone
Consent StatementWritten informed consent was obtained from the patient for publication of this article.
Data AvailabilityAll relevant data are within the paper and its Supporting Information files.
Conflict of InterestAuthors declare no conflict of interest.
Copyright© 2021 David Ferreira et al. This article is distributed under the terms of Creative Commons Attribution License which permits unrestricted use, distribution and reproduction in any medium provided the original author(s) and original publisher are properly credited. Please see the copyright policy on the journal website for more information.
