Rammohan Vadapalli MD, Presenter: Nothing to Disclose

Harshavardhan KR MD, Abstract Co-Author: Nothing to Disclose

Prasad Guntuluri, Abstract Co-Author: Nothing to Disclose

Approach to Diagnosis of tendon sheath masses is outlined with common Clinical  and Imaging Differential Diagnosis. Radiographic features,Ultrasound and MR  Imaging findings of Common and Uncommon Tendon sheath masses is illustrated with examples

Common Tendon Sheath Masses: Localized PVNS Giant Cell Tumour of Tendon sheath The clinical differential diagnosis includes desmoids ganglion cysts, foriegn body granuloma, epidermoid cyst, lipoma, knuckle pad,Cavernous haemangioma,Tophaceous Gout,necrobiotic granuloma, tendinous xanthoma, fibroma of the tendon sheath, infection,rheumatoid nodule, pseudogout and amyloidoma    Imaging based Differential Diagnosis Includes any soft-tissue mass with low signal intensity on both T1-weighted and T2-weighted images, such as a desmoid tumor (particularly if deep) or pigmented villonodular synovitis, which more commonly involves the larger joints. Aside from possessing similar signal characteristics, giant cell tumor of the tendon sheath also histologically resembles pigmented villonodular synovitis as both of them contain haemosiderin Tendon sheath neoplastic entities tend to be localized processes. Involvement of multiple tendon sheaths and involvement of long segments of the tendon sheath would be more typical of infection:e.g Tuberculosis+

http://abstract.rsna.org/uploads/2014/14009465/14009465_k4ja.pdf

Vadapalli, R, KR, H, Guntuluri, P, Multimodality Imaging of Tendon sheath Masses (Tumours and Tumour Like Lesions) A Pictorial Essay.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14009465.html