Which statement correctly describes a radiation indication?

• A. Can be focused or whole brain radiation
• B. Radiation is used only for benign tumors
• C. It never affects cognitive function
• D. It replaces the need for surgery

Answer: (A)

Radiation therapy for brain conditions is flexible and purpose-driven: it can be delivered as a focused treatment to a specific lesion or as whole-brain radiation when disease is widespread or multifocal. This range—targeted versus whole-brain delivery—embodies how radiation indications are determined by location, number of lesions, and the treatment goals. Focused radiation (like stereotactic or IMRT) aims to destroy the tumor while sparing healthy tissue, while whole-brain radiation treats widespread or multiple metastases.

Radiation is not limited to benign tumors; it’s also used for malignant brain tumors and metastases, and often for benign conditions when surgery isn’t feasible or would be too risky. Cognitive effects can occur, particularly with whole-brain radiation, so impact on function is a consideration in planning. It does not universally replace surgery; in many cases it is used alongside surgery or as an alternative when surgery isn’t possible.