[A primary study of microanatomy on blood supplement of large and huge pituitary adenoma].

OBJECTIVE

To explore the blood supplement regularity of large and huge pituitary adenomas. MECHODS: Sixteen large and huge pituitary adenomas were removed by microsurgery via transorbitofrontosphenoidal approach. The blood vessels of the tumors coming from surrounding structures were observed, photographed, videotaped and measured during operation.

RESULTS

The blood supplement of the pituitary adenoma comes from not only the superior and inferior hypophyseal arteries, but also a lot of new arteries originating from meninges, optic nerves, optic chiasm, and arteries which surround the tumors, such as internal carotid artery, anterior cerebral artery and soon.

CONCLUSION

The blood supplement of large and huge pituitary adenomas is increased obviously. The operation results will get much better if this situation is recognized and handled very well.