Related Experiment Video
Updated: Mar 6, 2026

In vivo Macrophage Imaging Using MR Targeted Contrast Agent for Longitudinal Evaluation of Septic Arthritis
Published on: October 20, 2013
Localized pigmented villonodular synovitis in a child knee
O Şahap Atik1, Hasan Hüseyin Bozkurt, Efkan Özcan
1Department of Orthopedics and Traumatology, Medical Faculty of Gazi University, 06500 Beşevler, Ankara, Turkey. satikmd@gmail.com.
Pigmented villonodular synovitis, a rare knee tumor, was observed in a 14-year-old boy. Arthrotomy was chosen over arthroscopy due to the patient's obesity and concerns about tumor recurrence.
Area of Science:
- Orthopedic Surgery
- Pediatric Oncology
- Musculoskeletal Pathology
Background:
- Pigmented villonodular synovitis (PVNS) is a rare, benign neoplastic proliferation of the synovium.
- Most commonly affects the knee joint, but is exceptionally rare in pediatric patients.
- Localized PVNS presents a diagnostic and therapeutic challenge, particularly in children.
Observation:
- A case of localized pigmented villonodular synovitis in the knee of a 14-year-old male is presented.
- The patient's obesity and the perceived high risk of recurrence influenced the surgical approach.
- Arthrotomy was selected over arthroscopy for tumor excision.
Findings:
- Surgical excision via arthrotomy was performed for the localized PVNS.
- The decision-making process considered patient-specific factors like obesity and tumor characteristics.
- Management strategies for pediatric knee PVNS may differ from adult cases.
Implications:
- This case highlights the importance of considering rare conditions like PVNS in pediatric knee pathology.
- The choice of surgical technique (arthrotomy vs. arthroscopy) should be individualized based on patient factors and tumor characteristics.
- Further research into optimal management strategies for pediatric PVNS is warranted to minimize recurrence risk.
Related Concept Videos
Knee Joint
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris...
Development of the Limb Synovial Joints
The mesenchymal stem cells differentiate into chondrocytes that form the hyaline cartilage, and later the cartilaginous model of the bone. This model further transforms into a bone. This process is known as endochondral ossification.
During development, the limbs...
Ankle Joint
Pharmacokinetics in Pediatric Patients: Drug Metabolism
Pharmacokinetics in Pediatric Patients: Drug Excretion
Nephrotic Syndrome I : Introduction

