Pituitary adenomas are generally divided into three categories dependent upon their biological functioning : benign adenoma , invasive adenoma , or carcinomas , with carcinomas accounting for 0.1 % to 0.2 % , approximately 35 % being invasive adenomas and most being benign adenomas .
Pituitary tumors are generally divided into three kinds dependant upon their biological functioning : benign adenoma , invasive adenoma or carcinomas , with carcinomas accounting for 0.1 % to 0.2 % , appoximately 35 % being invasive adenomas and most being benign adenomas .