Related Experiment Video
Updated: Sep 13, 2025

Author Spotlight: Double Posteromedial Approach for Treating Posterior Cruciate Ligament Cysts
Published on: October 20, 2023
Intraarticular Tumors
Michael E Kallen1, John M Gross2
1Department of Pathology, University of Maryland School of Medicine, 22 South Greene Street, NBW-54, Baltimore, MD 21201, USA.
Abstract:
Intraarticular tumors are rare and represent a common source of diagnostic difficulty with potentially profound clinical consequences. We will illustrate the pertinent features of common joint-based tumors, which are fortunately mostly benign and few in number. In addition, we provide updates in intraarticular neoplasia, highlighting pearls to aid pathologist recognition, and discuss relevant mimics.
Related Concept Videos
Structural Joints: Synovial Joints
Knee Joint
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris...
Tumor Immunotherapy
Functional Classification of Joints
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses or amphiarthroses, whereas all synovial joints are classified as diarthroses.
Synarthrosis
An...
Structural Classification of Joints
A fibrous joint is where the adjacent bones are united by fibrous connective...
Tumor Progression
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...

