Figure 1
From: Metastasizing tenosynovial giant cell tumour, diffuse type/pigmented villonodular synovitis
a On magnetic resonance imaging, an heterogeneous multinodular mass was observed on sagittal T1-weighted images (TR/TE: 1,200/120). Dark signal nodules, compatible with hemosiderin deposition, were identified. b On macroscopy a multinodular lesion was evident in the leg and in the thigh showing variegated colour. c, d On haematoxylin and eosin staining the lesion showed synovial-like mononuclear cells without cytologic atypia, admixed with multinucleate giant cells.