Pituitary Tumor

Over the past twenty years, a progressively increasing number of markers biochemical, clinical, imaging, histopathological or genetic have been suggested to attempt to predict aggression and therapeutic outcome, both in secretory PitNETs and in non-secretory PitNETs. In recent years, the microenvironment tumor (TEM) has been extensively studied in different malignancies, promoting the development of therapies target and immunotherapy with checkpoint inhibitors immune system (ICI). Data on TIME in PitNETs are scarce today and derive from studies conducted mainly on heterogeneous cases for type of PitNET. Therefore, the purpose of this research project is to investigate the TIME in PitNET, to identify immune biomarkers and new molecular pathways that can promote the use of ICI and target therapies in Aggressive PitNETs.

The purpose of this study is to observe predictors of pituitary tumor recurrence and markers of persistent disease activity in patients harboring pituitary mass lesions of all types.

The primary objective of this study is to evaluate the diagnostic performance of the CONVIVO confocal endomicroscope in discriminating between normal and abnormal tissue in vivo during brain tumor surgery. The interpretation of intraoperative images obtained in situ will be tested against conventional histologic evaluation of targeted biopsies from imaged tissue. The study team hypothesize that there will be a high degree of correlation between images obtained with the CONVIVO system and conventional histologic interpretation.

The purpose of this study is to assess wether the SONDA visual field test is suitable for patients with a supra sellar tumour.

This study involves collecting paired tumor samples from intrasellar and cavernous sinus regions of 20 invasive pituitary tumor patients, preserving them at -80°C for quality multi-omics analysis. Proteomics and transcriptomics are employed to identify molecular differences, while imaging data (MRI/CT) assesses tumor morphology and invasion. In vitro experiments and mechanistic studies validate key findings, exploring how regional molecular differences affect tumor behavior. Data integration combines multi-omics and imaging features to uncover biomarkers and pathways associated with invasiveness and regional specificity, with statistical analysis ensuring significance and reliability.

The investigators carried out a multi-center comparative study, involving hospitals including the Second Affiliated Hospital of Zhejiang University School of Medicine, Peking Union Medical College Hospital, West China Hospital, Wenzhou First Hospital, and Li Huili Hospital. This study aimed to compare the efficacy of medication and surgery for specific subtypes of microadenomas and clearly defined macroadenomas (Knosp grades 0-2), in order to determine which is more effective and which has fewer benefits, thereby enhancing the evidence base.

Neuroendocrine neoplasms (NENs) are a heterogeneous group of lesions derived from cells with the ability to produce hormones that may arise from multiple different organs. Their clinical behavior is quite variable, encompassing both benign lesions and aggressive tumors that invade surrounding and/or distant structures. NENs may also cause serious morbidity due to hormone oversecretion. NENs are among the most frequently inherited human tumors, presenting either isolated or as part of syndromes in which a single patient or family develops multiple tumors. There are also non-inherited changes in the genetic information of the tumor cells that are potential targets for treatment. Both inherited and non-inherited DNA defects can be identified using modern routine genetic tests which, unfortunately, are not widely available in Mexico. This project seeks to uncover the genetic defects causing NENs in a large cohort of Mexican patients, using three different methods for genetic testing. Adult individuals with various types of NENs from two reference hospitals in Mexico City will be invited to participate. After completing informed consent, blood and, if possible, tissue samples will be obtained from all participants. Clinical details, laboratory results, imaging studies, and histopathological data at disease presentation will be retrieved. An initial screening will be performed by analyzing changes in the sequence of multiple genes that have been associated with the occurrence of NENs. In cases with negative screening, a specific method to assess changes in the number of copies of the same genes will also be employed. Finally, sequences of all DNA regions encoding information required to make proteins will be obtained in selected cases. Analyses will be carried out in blood and, if available, also in tumor tissue samples from study participants. Screening of additional family members will be offered. This project will accurately describe the repertoire of specific defects causing NENs in the study population, and will likely uncover and characterize novel genetic associations. The results will contribute for a better understanding of the alterations within and outside known driver genes that shape syndromic presentations, tumor behaviors, and inheritance patterns in individuals with NENs. These data will contribute to improve the information on the molecular bases of NENs, including alterations that can be used as therapeutic targets.

The papers propose a new method to prevent postoperative cerebrospinal fluid leakage. Doctors use the absorbable polyglycolic acid (PGA) and fibrin glue to repair in surgery, prevent cerebrospinal fluid leakage and reduce the necessity of postoperative lumbar drainage after surgery. This study will analyze the changes in cerebrospinal fluid leakage in patients with pituitary tumors and skull base tumors after surgery, and further understand the effectiveness of Neoveil , as the basis for the development of new treatments.

This is a prospective, single-blinded, multicenter study evaluating the benefit of sinonasal irrigations following endoscopic pituitary surgery. The goal of this study is to create practice changing guidelines with objective data highlighting the importance of irrigations on postoperative outcomes for pituitary surgery.