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A 49-year-old member asked:

Could radiation make brain tumors grow before they start to shrink?

2 doctor answers7 doctors weighed in
Dr. Richard Mcgee
Medical Oncology 51 years experience
Not actually: Radiation may cause apparent enlargement of brain tumors on imaging and edema (swelling) around the tumor as it dies so what is seen on the scans may look larger but the actual living tumor cells are regressing so the enlargement and even worse local brain function is apparent not real or permanent
Dr. Gerald Mandell
Nuclear Medicine 53 years experience
Swell: Irradiation can affect tumors with initial swelling from necrosis or killing tumor cells. This can cause tumor to initially swell prior to shrinking.

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Last updated May 8, 2016

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