Normal Pineal Gland with Calcifications

The pineal gland is a midline structure involved in the regulation of circadian rhythm. The "internal clock" that allows for coordination of sleep and wake cycles with changes in night and day is largely regulated by the actions of melatonin, a neurotransmitter that is produced by the constituent cell of the pineal gland: the pinealocyte. Pinealocytes give rise to a rare group of tumors... Continue Reading →

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