Imaging at Diagnosis
MRI of the brain and skull base or temporal bones without and with contrast is recommended at initial diagnosis of a skull base or temporal bone tumor. (GRADE C, SOR 1.00, very strong recommendation)
CT of the temporal bones without contrast is recommended at initial diagnosis of a temporal bone tumor. (GRADE C, SOR 1.08, very strong recommendation) Contrast-enhanced CT is not recommended unless MRI is contraindicated.
CT of the head without contrast is recommended at initial diagnosis of a skull base tumor. (GRADE D, SOR 1.42, very strong recommendation) Contrast-enhanced CT is not recommended unless MRI is contraindicated.
Full body PET CT is recommended at initial diagnosis/staging of a skull base or temporal bone sarcoma. (GRADE D, SOR 1.0, very strong recommendation) Standard chest CT is typically concomitantly performed.