Imaging at Follow-up
MRI of the brain and skull base or temporal bones without and with contrast is recommended during on therapy follow up of a skull base or temporal bone tumor. (GRADE C, SOR 1.00, very strong recommendation) CT of the head without contrast for the skull base or CT temporal bone without contrast may provide complementary information at follow up, especially as it relates to bony treatment response. CT, however, does not serve as a primary method of follow up. Contrast-enhanced CT is not recommended for such follow up unless MRI is contraindicated.
Full body PET CT is recommended during on therapy follow up of a temporal bone or skull base sarcoma with metastatic disease at presentation. (GRADE C, SOR 1.00, very strong recommendation) Standard chest CT is typically concomitantly performed.