Preoperative easily misdiagnosed telangiectatic osteosarcoma: clinical-radiologic-pathologic correlations

Area of Science:

• Orthopedic Oncology
• Radiology
• Pathology

Background:

• Telangiectatic osteosarcoma (TOS) is a rare subtype of osteosarcoma.
• Accurate preoperative diagnosis is crucial for effective treatment planning.

Purpose of the Study:

• To delineate the clinical, imaging, and pathologic features of TOS.
• To enhance diagnostic accuracy for telangiectatic osteosarcoma.

Main Methods:

• Retrospective review of 26 TOS patients' data.
• Analysis of radiographic and magnetic resonance (MR) imaging findings.
• Evaluation of serum alkaline phosphatase (AKP) levels and biopsy results.

Main Results:

• Distal femur was the most common site (53.8%).
• Radiographs revealed geographic bone lysis, cortical destruction, and soft-tissue masses.
• MR imaging showed multiple cystic spaces, fluid-fluid levels, and peripheral enhancement.
• Nine cases were misdiagnosed as aneurysmal bone cysts preoperatively.

Conclusions:

• Characteristic imaging features include aggressive growth, cystic cavities, and surrounding enhancing tissue.
• These features aid in distinguishing TOS from other bone lesions.
• Improved understanding of TOS imaging characteristics can lead to better preoperative diagnosis.