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	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

Increased serum prolactin levels have numerous causes, but significant hyperprolactinemia always raises the suspicion of hypothalamic or pituitary disease, especially prolactinoma.¹ It is highly unusual, however, for a primary brain tumor to present as isolated hyperprolactinemia.

Report of a Case.

A healthy, 25-year-old, single woman consulted a dermatologist because of facial skin lesions. Several laboratory tests were performed, and increased serum prolactin levels of 57 µg/L (reference range, <20 µg/L) were the only abnormality found. The patient was not taking any medications, and a second test performed using a previously inserted venous cannula after she had rested again yielded high serum prolactin levels of 63 µg/L. This test was followed by a computed tomographic scan of the brain and sella turcica, which showed no abnormality. The patient's menses were regular and there was no galactorrhea or reports of other abnormal physical findings at that time. Twelve months later, the patient presented with neck pain . . . [Full Text of this Article]

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