Pituitary adenoma and meningioma in the same patient. Report of three cases.

Three patients are presented in whom both pituitary adenoma and meningioma were found. The pituitary tumour was a prolactinoma in one case and non-secreting adenoma in the other two. In one case the meningioma originated from the planum sphenoidale and was seperate from the pituitary adenoma. Another patient had a parasellar meningioma, which was suspected preoperatively by different enhancement on the CT scan. In the third case, both tumours were mainly infradiaphragmatic and could not be differentiated preoperatively or intraoperatively. This appears to be the first case with both tumours below the diaphragm. The clinical, radiological and histopathological findings are presented.