label: Tenosynovial Giant Cell Tumor, Localized Type
label_lc: tenosynovial giant cell tumor, localized type
description: A well-circumscribed, lobulated tumor, completely or partially covered by a fibrous capsule. It usually arises in the fingers.  It is characterized by the presence of mononuclear cells, multinucleated osteoclast-like giant cells, hemosiderin-laden macrophages, foam cells, and an inflammatory infiltrate. The tumor is slow-growing, usually developing over several years. Clinical presentation includes painless edema of the affected site.