Endocrine Abstracts

BackgroundPituitary adenomas are general benign tumors. However, gross invasion at time of operation is observed in up to 35% of pituitary adenomas. The new WHO classification describes pituitary tumor subtypes along with histological markers, such as Ki67 > 3%, that may suggest a potential for aggressive clinical behavior. The expression of EGFR in tumor microenvironment of pituitary adenomas ant its correlation with tumor behavior have been poorly ...