[Bleeding and complications related to hemorrhage during transsphenoidal removal of pituitary tumor].

450 cases who undertook the transsphenoidal removal of pituitary tumors from 1982 to 1992 were reviewed. The bleeding during operation and the complications related to the bleeding were reported in 19 cases. The intercavernous sinuses were traumatized during operation in 9 cases. The possibility of abnormal dural arteries existed in 3 cases. The bleeding happened in the course of dissociation of nasal septum in 2 cases. The cause of bleeding in 3 cases were unclear. There was no much bleeding or bleeding record during operation, but postoperative bleeding complications appeared in other 2 cases. Heavy bleeding came from nose repeatedly in 2 cases, one of which was confirmed as pseudoaneurysm. The postoperative subarachnoid haemorrhage in 2 cases, one blindness and one paralysis of abductor nerve happened. The causes of bleeding and complication were discussed.