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Updated: Jul 17, 2026

Establishment of Cancer Stem Cell Cultures from Human Conventional Osteosarcoma

Establishment of Cancer Stem Cell Cultures from Human Conventional Osteosarcoma

Published on: October 14, 2016

Synchronous multifocal osteosarcoma: case report and literature review.

Verity A Currall¹, John H Dixon

¹Department of Orthopaedics, Bristol Royal Infirmary, United Bristol Healthcare NHS Trust, Bristol BS1 3NU, UK.

|January 26, 2007

Summary

Multifocal osteosarcoma, a rare cancer affecting multiple bone sites without lung metastasis, presents a diagnostic challenge. This case report details a successful treatment outcome in a young adult patient.

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Area of Science:

Orthopedic Oncology
Skeletal Tumors
Bone Cancer Research

Background:

Multifocal osteosarcoma is defined as tumor occurrence at two or more sites without pulmonary metastases.
It can manifest as either synchronous (at the same time) or metachronous (at different times) disease.
This rare condition is associated with a generally poor prognosis.

Observation:

A 21-year-old male presented with a swollen, painful right knee without a history of trauma.
Imaging revealed high-grade osteosarcoma in both the distal tibia and proximal femur.
The patient had no evidence of pulmonary metastases at diagnosis.

Findings:

Surgical resection and prosthetic replacement of the affected distal femur and proximal tibia were performed.

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Last Updated: Jul 17, 2026

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The patient remains disease-free 19 months post-diagnosis and treatment.

This case highlights a potentially favorable outcome in multifocal osteosarcoma.

Implications:

The case contributes to understanding the clinical presentation and management of multifocal osteosarcoma.
It suggests that aggressive surgical intervention can lead to positive outcomes in select cases.
Further research is needed to clarify the etiology (multiple primary tumors vs. metastasis) and optimize treatment strategies.