[Infundibuloma--report of 6 cases]

Six cases of rare infundibuloma are reported. Infundibuloma, implying pilocytic astrocytoma which stems from the neurohypophysis, often encroaches upon or injures the neural pathway from the nerve nucleus beneath the hypothalamus to pituitary adenohypophysis. Therefore, various hormones, stimulating or inhibitory, produced by the hypothalamic nerve nuclei could not reach the target cells of adenohypophysis, resulting in different clinical symptoms of dysendocrisiasis. The tumor is difficult to diagnose by X-ray, CT or histopathology because of its miniature size. Regional tomography should be done besides endocrine tests. Specimens should be collected as much as possible during the operation for pathological confirmation. Transoro-nasosphenoidal microsurgery could achieve a good result.