D44: Neoplasm of uncertain or unknown behaviour of endocrine glands
D44.5: Neoplasm of uncertain or unknown behaviour: Pineal gland
When there is abnormal growth of tissue, then this is also referred to as a tumor. The tissue in the body is made up of cells. A tumor disorder involves the cells multiplying more than normal. This results in abnormal or excess tissue forming. A tumor can be benign or malignant.
The pineal gland is in the brain. The pineal gland secretes messenger substances that regulate things like the sleep-wake cycle of the body.
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