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Objective: to evaluate the hormone profiles of patients with pituitary adenomas operated on in Hospital das Clínicas, UniversidadeFederal de Goiás (HC-UFG), correlating them with the variables age, sex, and Knosp grade. Method: This is a retrospective quantitativestudy of medical records, including a total population of 20 patients diagnosed with pituitary adenomas operated on using the pureendoscopic endonasal transsphenoidal approach. The hormone profiles of the three types of pituitary adenoma prevalent in this institutionwere analyzed: nonfunctioning macroadenoma, growth hormone-secreting pituitary adenoma (acromegaly), and adrenocorticotropichormone-secreting pituitary adenoma (Cushing’s disease). Pre and postoperative hormone values were statistically paired with thevariables selected. Results: The global levels of the specific hormones of each disease decreased after surgery. However, no statisticalsignificance was found between the variables selected in this study and the pre and postoperative hormone values. Conclusion:The main surgical goal, the specific hormones decrease, was achieved in all the surgeries performed. Analyzing the relationshipbetween the variables and the hormone profiles, we conclude that age, sex, and Knosp grade did not influence the results obtained.