1. Many palpable masses of the hand and wrist are of non-neoplastic origin.
2. The differential diagnosis of palpable masses of the hand and wrist can be narrowed by identifying their relationship to surrounding structures and defining the signal characteristics on MR imaging.
3. A more definitive diagnosis can be reached when the physical exam findings and previous medical conditions are known.
Exhibit Organization:
I. Brief Overview of Hand Anatomy
II. Acquired non-neoplastic masses of the hand and wrist
1. Arthropathies
• Gout
• Rheumatoid arthritis
2. Tendinopathy and Synovitis
• Diffuse pigmented villonodular synovitis
• Nodular tenosynovitis
• DeQuervain’s tenosynovitis
• Tenosynovial chondromatosis
• Calcific tendinitis
3. Post-traumatic Lesions
• Flexor tendon bursitis
• hematoma
4. Cysts
• Ganglion cyst
5. Other
• Nora’s lesion
III. Developmental non-neoplastic masses
1. Vascular
• Arteriovenous malformations
• Varix
2. Accessory Muscles
• Extensor digitorum manus brevis
3. Bony excrescences
• Carpal boss
• melorrheostosis
4. Other
• Fibrolipomatous hamartoma
Ro, M,
Mijangos, S,
Irish, R,
Benitez, C,
Non-Neoplastic Masses of the Hand and Wrist. Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL.
http://archive.rsna.org/2014/14004952.html