Beyond the bones: Extraskeletal osteosarcoma of the thigh

Bader Abou Shaar, MBBS; Ghassan Awad El-Karim, MD; Abdul Rahman Alsaied, HSD; Nadeem Almalki, OSSD; Nader Ashraf Fawzy, MBBS; Ameera Almalki, OSSD; Rishi Duggal, MD; Sohaib Munir, MD

Radiology Case Reports (Jun 2023)

Beyond the bones: Extraskeletal osteosarcoma of the thigh

Bader Abou Shaar, MBBS,
Ghassan Awad El-Karim, MD,
Abdul Rahman Alsaied, HSD,
Nadeem Almalki, OSSD,
Nader Ashraf Fawzy, MBBS,
Ameera Almalki, OSSD,
Rishi Duggal, MD,
Sohaib Munir, MD

Affiliations

Bader Abou Shaar, MBBS: College of Medicine, Alfaisal University, Riyadh, Saudi Arabia; Department of Diagnostic Imaging, Bluewater Health, Sarnia, ON, Canada; Department of Medical Imaging, Juravinski Hospital, Hamilton, ON, Canada; Corresponding author.
Ghassan Awad El-Karim, MD: University of Toronto, Faculty of Medicine, Toronto, ON, Canada
Abdul Rahman Alsaied, HSD: Faculty of Science, Western University, London, ON, Canada
Nadeem Almalki, OSSD: Faculty of Math, University of Waterloo, Waterloo, ON, Canada
Nader Ashraf Fawzy, MBBS: College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
Ameera Almalki, OSSD: Department of Diagnostic Imaging, Bluewater Health, Sarnia, ON, Canada
Rishi Duggal, MD: Department of Diagnostic Imaging, Bluewater Health, Sarnia, ON, Canada; Department of Medical Imaging, Western University, London, ON, Canada
Sohaib Munir, MD: Department of Medical Imaging, Juravinski Hospital, Hamilton, ON, Canada

Journal volume & issue: Vol. 18, no. 6
pp. 2126 – 2135

Abstract

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Extraskeletal osteosarcoma (ESOS) is a rare malignant mesenchymal soft tissue tumor that usually arises in the lower extremities. It is typically a high-grade malignancy that represents only around 1%-2% of all soft tissue sarcomas and 2%-4% of all osteosarcomas. In this report, we describe a case of a 67-year-old female who presented with a 4-day history of a painless lump in her posterior right thigh. Workup utilizing different imaging modalities yielded a diagnosis of ESOS. The radiologic features of ESOS, as well as the current treatment paradigm and prognosis of this rare malignancy, will be discussed based on a review of the literature.

Published in Radiology Case Reports

ISSN: 1930-0433 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Medicine: Medicine (General): Medical physics. Medical radiology. Nuclear medicine
Website: https://www.sciencedirect.com/journal/radiology-case-reports

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