Warning Signs Of Multiple Endocrine Neoplasia Type 1

Vision Changes

Vision changes may manifest in individuals with MEN 1 when a tumor in the pituitary gland becomes large enough to compress neighboring nerves or components of the brain. The benign or noncancerous form of a tumor that causes vision changes is called a macroadenoma. A large malignant or cancerous tumor of the pituitary gland is called a carcinoma. A carcinoma or macroadenoma that forms in the pituitary gland as a result of multiple endocrine neoplasia type 1 can cause many symptoms that involve and impair an individual's vision. A weakness of the eye muscle may occur, which causes the eyes to lose their normal ability to move in the same direction at the same time. A patient may also experience a loss of their peripheral vision, double vision, and blurry vision. Headaches, dizziness, and loss of consciousness are also common with these types of tumors. In individuals who have MEN 1, these symptoms will manifest once the tumor has grown large enough to pinch the nerves located between the brain and the eyes.

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