Dr. María Jesús Fernández Aceñero graduated from Universidad Autónoma de Madrid in 1991. Dr. María Jesús Fernández Aceñero is a professor of Pathological Anatomy at the Faculty of Medicine of the Complutense University, Madrid. She has a doctorate in Medicine and Surgery from the Complutense University of Madrid and is a specialist in Pathological Anatomy after completing her residency at the San Carlos Clinical Hospital in Madrid. Dr. María Jesús Fernández Aceñero has a university specialist degree in Electron Microscopy from the Complutense University of Madrid, a European Board of Pathology degree from the European Committee of Pathologists, and a diploma in Clinical Research Methodology from the Madrid University Center for Public Health. Since 2014, she has held a position as a specialist in Pathological Anatomy at Hospital Clínico San Carlos in Madrid, and at this moment, she is Head of the Molecular Pathology section in this hospital. She has extensive teaching experience as a full professor, director, or professor of courses and training activities in different teaching organizations and universities. Her main research interest is GI cancer.