Giant Cell Tumor of the Pes Anserine Bursa (Extra-Articular Pigmented Villonodular Bursitis): A Case Report and Review of the Literature
Figure 3
(a) Histopathological slide showed villous proliferation covered by reactive appearing synovial cells (H&E, ×4). The cores of the villi had a cellular infiltrate consisting of mononuclear cells and foamy histiocytes with scattered giant cells ((b); H&E, ×20).
