May Be Caused by

Amyloid

Brown tumor of hyperparathyroidism

Chronic hematoma

Clear cell sarcoma

Dermatofibrosarcoma protuberans

Ewing sarcoma

Extensively mineralized mass

Fibromatosis

Fibrosarcoma

Fibrous dysplasia

Giant cell tumor

Giant cell tumor of tendon sheath

Gout

Granular cell tumor

Granuloma annulare

Leiomyoma

Lymphoma

Malignant fibrous histiocytoma

Metastases

Multiple myeloma

Nodular synovitis

Osteosarcoma

Pigmented villonodular synovitis

Primitive neuroectodermal tumor