Neoplasm, neoplastic: mastoid (air cells) (antrum) (cavity)

Site	Malignant, Primary	Malignant, Secondary	Ca in situ	Benign	Uncertain Behavior	Unspecified Behavior
—	C30.1	C78.39	D02.3	D14.0	D38.5	D49.1
bone or process	C41.0	C79.51	—	D16.4-	D48.0	D49.2