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Updated: Jul 5, 2026

Three-Dimensional Bone Extracellular Matrix Model for Osteosarcoma
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Three-Dimensional Bone Extracellular Matrix Model for Osteosarcoma

Published on: April 12, 2019

Extraskeletal osteogenic sarcoma: a rare entity.

V Maheshwari1, A S Farhan, K Alam Adreena

  • 1Department of Pathology, JN Medical College, Aligarh Muslim University, Aligarh, UP, India.

Indian Journal of Pathology & Microbiology
|April 18, 2008
PubMed
Summary
This summary is machine-generated.

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A rare extraskeletal osteosarcoma caused a painful thigh swelling and lung metastasis in a young woman. Immunohistochemistry confirmed the diagnosis, highlighting the importance of advanced diagnostics for soft tissue tumors.

Area of Science:

  • Oncology
  • Pathology
  • Radiology

Background:

  • Extraskeletal osteosarcoma is a rare malignant bone tumor variant.
  • It typically presents as a soft tissue mass without primary bone involvement.
  • Early diagnosis is crucial due to metastatic potential.

Observation:

  • A 25-year-old female experienced progressive, painful swelling in her right lower thigh and knee over 5 months.
  • Radiographic imaging revealed soft tissue swelling but no bony abnormalities.
  • The patient also had evidence of distant metastasis, specifically in the lungs.

Findings:

  • The diagnosis of extraskeletal osteosarcoma was established.
  • Immunohistochemistry was essential for confirming the tumor type.
  • The case highlights a rare presentation with significant metastatic disease.

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Last Updated: Jul 5, 2026

Three-Dimensional Bone Extracellular Matrix Model for Osteosarcoma
08:07

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Published on: April 12, 2019

Establishment of Cancer Stem Cell Cultures from Human Conventional Osteosarcoma
09:25

Establishment of Cancer Stem Cell Cultures from Human Conventional Osteosarcoma

Published on: October 14, 2016

Intratibial Osteosarcoma Cell Injection to Generate Orthotopic Osteosarcoma and Lung Metastasis Mouse Models
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Published on: October 28, 2021

Implications:

  • This case underscores the importance of considering rare diagnoses like extraskeletal osteosarcoma in young adults with unexplained soft tissue masses.
  • Advanced diagnostic techniques, including immunohistochemistry, are critical for accurate tumor classification.
  • Prompt recognition and management are vital to address the high metastatic potential of this condition.