Osteosarcoma classification

Osteosarcoma Microchapters
Home
Patient Information
Overview
Historical Perspective
Classification
Pathophysiology
Causes
Differentiating Osteosarcoma from other Diseases
Epidemiology and Demographics
Risk Factors
Screening
Natural History, Complications and Prognosis
Diagnosis
Staging
History and Symptoms
Physical Examination
Laboratory Findings
Biopsy
X Ray
CT
MRI
Other Imaging Findings
Other Diagnostic Studies
Treatment
Medical Therapy
Surgery
Prevention
Cost-Effectiveness of Therapy
Future or Investigational Therapies
Case Studies
Case #1
Osteosarcoma classification On the Web
Most recent articles
cited articles
Review articles
CME Programs
Powerpoint slides
Images
American Roentgen Ray Society Images of Osteosarcoma classification All Images X-rays Echo & Ultrasound CT Images MRI
Ongoing Trials at Clinical Trials.gov
US National Guidelines Clearinghouse
NICE Guidance
FDA on Osteosarcoma classification
CDC on Osteosarcoma classification
Osteosarcoma classification in the news
Blogs on Osteosarcoma classification
Directions to Hospitals Treating Osteosarcoma
Risk calculators and risk factors for Osteosarcoma classification

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Suveenkrishna Pothuru, M.B,B.S. [2]

Overview

Osteosarcoma may be classified according to the World Health Organization’s histologic classification of bone tumors into three groups: central (medullary) tumors, surface (peripheral) tumors, and extraskeletal tumors.

Classification

Osteosarcoma may be classified according to the World Health Organization’s histologic classification of bone tumors into three groups:

Central (medullary) tumors:

• Conventional central osteosarcomas.
• Telangiectatic osteosarcomas.
• Intraosseous well-differentiated (low-grade) osteosarcomas.
• Small-cell osteosarcomas.

Surface (peripheral) tumors:

• Parosteal (juxtacortical) well-differentiated (low-grade) osteosarcomas.
• Periosteal osteosarcoma: Low-grade to intermediate-grade osteosarcomas.
• High-grade surface osteosarcomas.

Extraskeletal:

• Extraskeletal osteosarcomas.