Tendon sheath fibroma
Citation, DOI & article data
Tendon sheath fibromas are rare proliferative lesions with common imaging features of tenosynovial giant cell tumors.
They are found in adults typically between the age of 20 and 50 with a 3:1 male predominance 2.
Tendon sheath fibromas are lobulated, round-to-oval, encapsulated masses consisting of spindle cells and collagen fibers that arise from the synovium of a tendon sheath 1,2.
Tendon sheath fibromas can arise around 2,3:
hand (~25%): most commonly the flexor surface
large joints (~5%): knee, shoulder, elbow and ankle
They can be intra-articular or extra-articular 2.
T1: low-to-iso signal
GRE: absent susceptibility artifact
T1 C+ (Gd): no or variable contrast enhancement
Treatment and prognosis
Treatment is usually surgical excision. There is a very low recurrence rate and these tumors are not reported to have undergone malignant transformation 3.
- 1. Benjamin Plotkin, Srihari C. Sampath, Srinath C. Sampath, Kambiz Motamedi. MR Imaging and US of the Wrist Tendons. (2016) RadioGraphics. 36 (6): 1688-1700. doi:10.1148/rg.2016160014 - Pubmed
- 2. Suzuki K, Yasuda T, Suzawa S, Watanabe K, Kanamori M, Kimura T. Fibroma of tendon sheath around large joints: clinical characteristics and literature review. (2017) BMC musculoskeletal disorders. 18 (1): 376. doi:10.1186/s12891-017-1736-5 - Pubmed
- 3. Heckert R, Bear J, Summers T, Frew M, Gwinn D, McKay P. Fibroma of the tendon sheath - a rare hand tumor. (2012) Polski przeglad chirurgiczny. 84 (12): 651-6. doi:10.2478/v10035-012-0107-z - Pubmed