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KMID : 0942820080070020179
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Journal of Korean Brain Tumor Society
2008 Volume.7 No. 2 p.179 ~ p.181
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Pituitary Stalk Adenomas：Two Case Reports
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Lee Jeong-Hoon
Kong Doo-Sik
Park Kwan
Kim Jong-Hyun
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Abstract
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We report two rare cases of pituitary adenomas arising from the pituitary stalk. The major complaints of both patients were
headaches and visual disturbances. On magnetic resonance imaging, both tumors were suprasellar in location. Gross tumor excision was performed via the pterional approach. The pathologic diagnoses were pituitary adenomas in both patients.
The tumors were shown to be non-functioning by immunochemistry analyses. No remnant tumors existed postoperatively
on follow-up magnetic resonance imaging. The pituitary stalk was preserved in both cases and pituitary hormonal activity
remained intact postoperatively. One patient had normal visual function pre- and post-operatively；the other patient had
improvement in the visual field defect and temporal hemianopsia involving the left eye. While there are many case reports
involving ectopic pituitary adenomas, pituitary adenomas originating from the pituitary stalk are extremely rare.
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KEYWORD
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Ectopic adenoma, Pituitary stalk, Suprasellar neoplasm
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