May Be Caused by

 Common

Angiomatosis

Burkitt lymphoma

Fibromatosis

Ganglion

Granulocytic sarcoma

Hemangioma

Leukemia

Lipoblastomatosis

Lipoma

Lipomatosis

Lymphangioma

Lymphoma

Metastases

Neurofibromatosis type 1

 Uncommon

Angiosarcoma

Glomus tumor

Kaposi sarcoma

Mazabraud syndrome

Paraganglioma

Schwannoma