Electronic ISSN 2287-0237

VOLUME

GIANT CELL TUMOR OF TENDON SHEATH IN SUPRACLAVICULAR REGION: CYTOLOGICAL ASPECT OF A COMMON TUMOR IN AN UNCOMMON LOCATION

FEBRUARY 2019 - VOL.15 | CASE REPORT

Giant cell tumor of tendon sheath (GCTTS) is a common neoplasm, frequentlydeveloped around small digital joints of hand, and less commonly in wrist, ankle, footand knee. GCTTS of other locations are very rare. The cytological feature of GCTTS isunique, but it could mimic neoplasm, inflammation or other lesions when arising inunusual locations. We reported a case of a 26-year-old male who presented with asupraclavicular mass. Microscopic features of excised mass revealed well-demarcatedoval nodule, composed of polymorphous population of multinucleated giant cells andmononuclear cells with fibrous septa, consistent with the diagnosis of GCTTS. Localrecurrence is not occurring during five-year follow-up. The purposes of this report is topresent the rarity of this tumor in an exceedingly rare location and to help avoidmisdiagnosis with other mimics.

Keywords:

giant cell tumor of tendon sheath, cytology, localized tenosynovial giant celltumor

Received: November 29, 2018

Revision received: December 14, 2018

Accepted after revision: January 10, 2019

BKK Med J 2019;15(1): 97-99.

DOI: 10.31524/bkkmedj.2019.02.017

MEDIA
Figure 1: Cytological findings of GCTTS with dispersed histiocyte-like cells, multinucleated giant cells (arrow) and hemosiderin-laden cells (arrowhead) (A-B: Papanicolaou stain, x400)
Figure 2:Microscopic findings of GCTTS (A-C) various population of cells in tumor, composing of scattered mononuclear stromal cells and osteoclast-like multinucleated giant cells (arrow) (A: hematoxylin-eosin stain, x100; B-C: hematoxylin-eosin stain, x40
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