Tenosynovial giant cell tumour, diffuse type PO
Synopsis
diffuse expansive sheets of cells with infiltrative borders and variable cellularity;
tumor margins are more cellular
hyperplastic synovium with papillary projections composed of foamy histiocytes and hemosiderin containing macrophages
large clefts, pseudoglandular or alveolar spaces lined by synovial cells, osteoclast-like multinucleated (10 - 70 nuclei) giant cells, epithelioid cells
abundant collagen may be present, (...)
Home > E. Pathology by systems > Locomotory system > Tendons and tendon sheaths
Tendons and tendon sheaths
Tendon and tendon sheath
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villonodular tenosynovitis
19 December 2020 -
tendinopathies
24 February 2018Definition : Diseases and anomalies of the tendons.
injury
rupture
inflammation : tendinitis
alteration / degeneration : tendinosis
See also
locomotory system -
tendon
24 February 2018|WKP|
Definition: A tendon or sinew is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension.
Tendons are similar to ligaments; both are made of collagen. Ligaments join one bone to another bone, while tendons connect muscle to bone.
They are associated to a tendon sheath .
Pathology : tendinopathies
injury
rupture
inflammation : tendinitis
alteration / degenerescence : tendinosis
See also
locomotory (...) -
tendon sheath
24 February 2018WKP
A tendon sheath is a layer of synovial membrane / synovium around a tendon.
Function
It permits the tendon to stretch and not adhere to the surrounding fascia.
Structure
It has two layers:
synovial sheath - synovial membrane - synovium > tenosynovium
fibrous tendon sheath
Pathology
inflammation : tenosynovitis
tumors
fibroma of the tendon sheath
See also
tendon
locomotory (...) -
fibrochondroma of the tendon sheath
14 June 2017tenosynovial fibrochondroma
See also
fibrochondroma
Open references
Fibrochondroma of Digital Flexor Tendon Sheath -a Rare Presentation. Abouel-Enin S, Maheshwari R, Wadhawan H, Verghese A, Madan S. J Hand Microsurg. 2014 Jun;6(1):40-1. doi:10.1007/s12593-012-0085-8.
PMID: #24876690# Free -
malignant giant cell tumor of tendon sheath
23 May 2016Malignant giant cell tumor of the tendon sheaths and joints (malignant pigmented villonodular synovitis); PVNS
Malignant giant cell tumor of the tendon sheaths and joints (malignant pigmented villonodular synovitis - malignant PVNS) is a rare lesion whose existence may be debatable.
Most cases of malignant PVNS are secondary, arising in patients in whom PVNS had been documented previously.
Important histologic features of malignancy are :
(a) a nodular, solid infiltrative pattern of (...) -
borderline giant cell tumor of the tendon sheath
16 March 2011"Borderline" giant cell tumor of the tendon sheath
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multifocal giant cell tumor of the tendon sheath
16 March 2011See also
giant cell tumor of the tendon sheath (GCT-TS)
References
Multifocal giant cell tumor of the tendon sheath occuring at different localizations of the same tendon of a finger: a case report and review of the literature. Altaykan A, Yildiz K, Hapa O, Cukur S. Eklem Hastalik Cerrahisi. 2009;20(2):119-23. PMID: #19619117# [Free] -
tenosynovial tumors
24 August 2005tumors of the tendon sheath
Exemples
tenosynovial chondromatosis
tenosynovial fibrochondroma / fibrochondroma of the tendon sheath
tenosynovial giant cell tumor tenosynovial giant cell tumor, localized type tenosynovial giant cell tumor, diffuse type
See also
synovium / synovial tumors
tendon sheath -
tenosynovial giant cell tumor
27 October 2004giant cell tumour of tendon sheath; nodular tenosynovitis; TGCT; GCTTS; tenosynovial giant cell tumor; pigmented villonodular synovitis and bursitis; localised nodular tenosynovitis; giant cell tumor of tendon sheath PVNS ; GCTTS
Definition: Tenosynovial giant cell tumor (TGCT) or Giant cell tumor of tendon sheath (GCTTS) is the most common benign tumor of synovium and tendon sheath. Immunophenotypical evidence suggests it is of synovial cell origin.
GCTTS is a relatively rare soft (...)
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