Plasma Melatonin, Luteinizing Hormone, Follicle-Stimulating Hormone, Prolactin, and Corticoids in Two Patients with Pinealoma

Abstract
Plasma melatonin, LH [luteinizing hormone], FSH [follicle stimulating hormone] PRL [prolactin] and corticoids were measured in 2 patients with pineal tumors. Plasma melatonin was not detectable (< 7 pg/ml) in either patient while gonadotropin and cortisol levels were within the normal range. One patient exhibited low PRL levels and the other patient, a prepubertal boy, had elevated levels. The clinical value of the measurement of melatonin as a potential marker for all pineal tumors must be questioned.

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