May Be Caused by

 Common

Alveolar soft part sarcoma

Angiosarcoma

Hemangioendothelioma

Hemangioma

Hemangiopericytoma

Kaposi sarcoma

 Uncommon

Alveolar-type rhabdomyosarcoma

Bacillary angiomatosis

Extraskeletal Ewing sarcoma

Fibrosarcoma

Malignant fibrous histiocytoma

Paraganglioma

Primitive neuroectodermal tumor

Rhabdomyosarcoma

Synovial sarcoma