Giant-cell tumor of bone occurred in the distal end of the ulna is extremely uncommon. A 23-year-old male had a giant-cell tumor occurred in the distal end of the ulna. After wide resection of the distal segment of the ulna including giant-cell tumor, ulnar components of the wrist joint were reconstructed with modified Sauvé-Kapandji procedure using the iliac bone graft, preserving the triangul...

Purpose or Learning Objective: Our aim was (1) to evaluate the value of computed tomography (CT) and dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) for monitoring denosumab therapy giant cell tumor bone (GCTB); (2) describe findings at diagnosis during treatment; (3) offer an overview good poor response, relapse, therapeutic complications.

The dedifferentiated giant-cell tumor of the bone is a very rare variant of the giant-cell tumor (GCT). We report the clinical, radiographic and histological findings of a dedifferentiated GCT in which the dedifferentiated component consisted of small round cells. We also comment on previously reported cases of dedifferentiated GCT, discuss the clinical implications of this dual histology, and ...