Background: A germline mutation of the MisMatch Repairgene that causes a malfunctioning DNA system is the defining feature of the hereditary illness known as Lynch syndrome. This review will discuss the endocrine aspects of LS and highlight current advancements in the area. Methods: We searched the available literature of the last 10 years for terms such as endocrine tumors and LS. Our goal is to provide a summary of the most recent information available on the endocrine perspective in Lynch syndrome. Results: The hormonal chemoprevention methods cited are the use of combined oral contraceptives, the use of progestogen-releasing intrauterine devices, and the use of progesterone-only drugs. In addition, after surgical exclusion of the uterus and ovaries, a method frequently adopted for LS patients, it is necessary to start hormonal menopausal therapy, taking into account certain age-specific features. In addition, numerous LS-associated endocrine tumor types have been described. Conclusions: Many hormonal variants are available that are useful in the chemoprevention involved in the treatment of LS. Menopausal hormone therapy is imperative for LS patients who need it. Clinicians need to be aware of the possible association of certain types of aggressive endocrine cancers associated with LS.
Background: Pheochromocytomas (Pheo) are rare neuroendocrine tumors with a suggestive clinical picture, characterized by hypersecretion of catecholamines and other neuroendocrine biomarkers. Methods: The purpose of the study was to analyze the diagnostic features of Pheo and investigate the role played by different neuroendocrine and hormonal markers in diagnosing Pheo.The retrospective study involved a group of 69 patients diagnosed and treated with Pheo, who had both urinary and plasma catecholamines and neuroendocrine markers measured pre- and postoperatively. Results: After comparing pre- and postoperative hormonal parameters and neuroendocrine biomarker changes, numerous statistically significant findings were found. The analysis of the relationships between chromogranin A (CgA) levels, plasma and urine metanephrines, and normetanephrine and Pheo tumor size was included in the study. Additionally, we evaluated Cg A's diagnostic efficacy in comparison to plasma metanephrines, normetanephrine, and neuron-specific enolase (NSE) for Pheo. Conclusions: We obtained statistically significant data on pre- and postoperative differences for plasma and urinary catecholamines, CgA and NSE. Pheo tumor size is interdependent with serum levels of Cg A, plasma and urinary metanephrines, and normetanephrine. The best diagnostic power for Pheo was plasma normetanephrine, followed by plasma metanephrines and CgA.
