Related Experiment Video
Updated: Apr 4, 2026

A Protocol to Acquire the Degenerative Tenocyte from Humans
Published on: June 9, 2018
Tenosynovial Giant Cell Tumor masked as de Quervain Tenosynovitis
None:
We present a patient who initially presented with clinical symptoms consistent with de Quervain tenosynovitis, resistant to conservative treatment. MRI revealed a cystic mass surrounding the radial styloid within the first extensor compartment (abductor pollicis longus (APL) and extensor pollicis brevis (EPB)), associated with scaphotrapezoid (STT) arthritis. However, upon surgical exploration, the lesion was identified as a localized tenosynovial giant cell tumor (TSGCT), which had caused erosion of the trapezium bone and compressed the EPB tendon. Histopathology confirmed the diagnosis. Postoperative recovery was uneventful, with functional improvement and no recurrence. This exceptional case highlights the importance of accurate diagnosis and the potential for atypical presentations of benign tumors. Informed consent was obtained from the patient after surgery to use her case details in publication for educational and research purposes.
Related Concept Videos
Disorders of the Skeletal Muscle
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
Pericarditis I: Introduction
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...
Muscles of the Forearm that Move the Hand and Fingers
Anterior Compartment
The anterior compartment muscles originate from the humerus. They primarily function as flexors and are also known as flexor muscles. They typically insert on the carpals, metacarpals, and phalanges. The superficial layer includes the flexor carpi...
Ankle Joint
Knee Joint
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris...