Please help! What is the difference between a brain cyst and brain tumour?

Semantics. A cyst is a fluid filled sac. A tumor is a solid mass of cells, that sometimes contain tumor fluid that is also called a tumor cyst. A typical brain cyst is benign. A tumor typically is not. Your neurosurgeon can explain those differences when evaluating the MRI study.

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Docs, could a brain tumor be mistaken for a brain cyst?

Brain tumor v. cyst. It depends on the imaging test. A technically adequate contrast enhanced MRI scan should be able to make this determination most of the time. It may be more difficult without contrast, or if only a CT was performed. Read more...