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Two years' experience with an extracapsular transsphenoidal approach to pituitary adenomas is presented. Some pituitary tumors contain an inordinate amount of connective tissue that often makes transsphenoidal resection difficult. By opening the tumor capsule and adjacent arachnoid membrane, such tumors with suprasellar extension can be safely removed. In some cases of functioning adenoma, resection of the diaphragma sellae and adjacent arachnoid membrane results in hormonal control. Among 62 cases of transsphenoidal surgery for pituitary adenomas, eight cases required this procedure. The surgical procedure is described and the cases are summarized. The indication and limitations of this procedure are discussed.
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Hashimoto et al. (1986) studied this question.
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