May Be Caused by

Amyloidosis

Aneurysmal bone cyst

Bone cyst

Carcinoma of nail-bed

Carcinoma of skin

Chondroblastoma

Chondromyxoid fibroma

Developmental cyst

Enchondroma

Enchondromatosis

Epidermoid inclusion cyst

Fibromatosis

Fibrous dysplasia

Foreign body

Giant cell granuloma

Giant cell tumor

Glomus tumor

Gout

Granuloma

Hemangioma

Hemochromatosis

Hemophilic pseudotumor

Intraosseous ganglion

Jackhammer operator disease

Keratoacanthoma

Kienböck disease

Langerhans cell histiocytosis

Lipoma

Maffucci syndrome

Metastasis

Mucopolysaccharidosis type 1-S

Multicentric infantile myofibromatosis

Multiple myeloma

Nonossifying fibroma

Osteoarthritis

Osteoid osteoma

Osteomyelitis

Palm thorn

Phalangeal microgeodic syndrome

Posttraumatic osteonecrosis

Rheumatoid arthritis

Sarcoidosis

Sickle cell disease

Silastic arthropathy

Sinus histiocytosis

Subungual keratoma

Tuberous sclerosis

Vascular channel

Villonodular synovitis

Xanthoma

Xanthomatosis