1.   The tumors can cause symptoms like pain, weight loss and severe abdominal bloating that can make patients appear pregnant.

2.   The tumor was causing a condition known as hydrocephalus, or water on the brain.

3.   Tumors can cause headaches, seizures, weakness, visual problems, speech difficulty, dizziness, hearing problems and forgetfulness.

4.   Doctors are often reluctant to operate on older prostate patients, because they may die of something else before slow-growing prostate tumors cause serious problems.

5.   If left untreated, the tumor could have caused cognitive impairment, Andrews said.