May Be Caused by

 Common

Acoustic schwannoma

Epidermoid

Metastasis to temporal bone

Parotid carcinoma

 Uncommon

Cancellous osteoma

Carcinoma of external auditory canal

Ceruminous gland tumor of external auditory canal

Chondrosarcoma

Compact osteoma

Cranial nerve IX schwannoma

Cranial nerve V schwannoma

Cranial nerve VII schwannoma

Cranial nerve X schwannoma

Cranial nerve XI schwannoma

Cranial nerve XII schwannoma

Exostosis of external auditory canal

Fibrosarcoma

Giant cell tumor

Glomus jugulare tumor

Glomus tympanicum tumor

Hemangioma

Leukemia

Lymphoma

Lymphosarcoma

Meningioma

Myeloma

Osteosarcoma

Rhabdomyosarcoma

Soft tissue adenoma

Undifferentiated sarcoma