Neuro-Oncology Surgical Outcomes Lab Members

Principal Investigator

Alfredo Quiñones-Hinojosa M.D.

Dr. Alfredo Quiñones-Hinojosa, known by his patients as Dr. Q, received his undergraduate degree from UC Berkeley and earned his medical degree with from Harvard with Honors. He did his residency at the University of California San Francisco, and currently works at Johns Hopkins in Baltimore, Maryland. His titles include Associate Professor of Neurological Surgery, Associate Professor of Oncology, Director of the Brain Tumor Surgery Program at Johns Hopkins Bayview Medical Center, and Director of the Pituitary Surgery Program at Johns Hopkins Hospital. Dr. Q also oversees two labs in his efforts to discover the ability of stem cells to fight brain cancer. In his free time Dr. Q enjoys mentoring, training for his half-marathon fundraiser run, and spending time with his wife and three kids.

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Hopkins Faculty

Kaisorn Chaichana M.D.

Kaisorn Chaichana, currently an Associate Professor of Neurosurgery at The Johns Hopkins Hospital, is completing a two year research fellowship funded by the National Institute of Health (NIH). Kaisorn received his B.S. in 2003 from the University of Utah and majored in Biology. Kaisorn joined the Brain Tumor Stem Cell Lab in June 2006. He is interested in studying the effects of epidermal growth factor (EGF) on the migration of normal neural stem cell and tumor stem cell migration. He is also trying to determine the phenotype of the invading brain tumor cells that make brain tumors resistant to treatment. He is also working on identifying ways to improve outcomes for patients with brain tumors following surgery.


•The Paul Ehrlich Young Investigator's Day Award
•The Henry Strong Dension Student Research Award
•Walter Dandy Clinical Research Award

Neurosurgical Fellows

Jordina Rincon-Torroella M.D.

Jordina first joined Dr. Quiñones’s team in March of 2012 during her sub-internship at the Department of Neurosurgery. Jordina received her medical degree from the University of Barcelona, Hospital Clínic in February 2013. She joined us again in July 2013 and is currently working as a content developer for various neurosurgical books that will be groundbreaking in the field of neurosurgery as the "Comprehensive multimedia video-atlas of skull base surgery and tumors" and the upcoming "Schmidek and Sweet neurosurgical handbook." She is also involved in various research projects as part of Dr. Quinones´s team.

Jordina will start a neuro-oncology research fellowship with us in 2014 sponsored by the Fundació "La Caixa." Her research interest are tumorgenesis, the treatment of high-grade gliomas and surgical approaches to skull base lesions.

Grants and sponsors:

Fundació Riera i Gubau scholarship for clinical rotations at the US (Government of Catalonia) - 2012
Fundació Pedro i Pons scholarship for research projects at the US (University of Barcelona) - 2013
Sponsored by Elsevier as a video-editor for the book "Comprehensive multimedia video-atlas of skull base surgery and tumors"

Karim ReFaey M.D.

Karim earned his medical degree from Ain Shans University in Cairo, Egypt in February 2014, and shortly thereafter joined Dr. Quinones’ team as a visiting student for three months. In August 2014, Karim returned to the team and began working as a post-doctoral fellow where he now investigates the ways in which mesenchymal fat cells are able to fight brain tumors when they are packaged with anti-cancerous drugs and delivered to brain tumor cells as a “Trojan horse.”

Currently Karim is working on several chapters and neurosurgical videos for Dr. Q’s prospective edition of Schmidek and Sweet, and in his free time serves a member of the Health Egyptians Organization, an NGO that combats the lack of health education in Egypt. Karim also enjoys swimming and has competed professionally at both the national and international level, earning himself titles in both spheres.

Tito Vivas Buitrago M.D.

Tito first joined Dr. Quiñones' team in May of 2014 as a medical student finishing his last sub-internship rotation for a period of 6 months. He also did part of his sub-internship at The Naval Force Hospital in Cartagena and The Comuneros Hospital in Bucaramanga. Tito received his medical degree from the University of Santander in Bucaramanga, Colombia in 2014.

He is currently working with the team as a post-doctoral fellow helping elucidate the behavior of remanent GBM cells after surgical resection in the recurrence of brain lesions. Tito is also assisting in the development of the upcoming neurosurgical textbook, Comprehensive Multimedia Video Atlas of Skull Base Surgery and Tumors. He is also involved in various research projects as part of Dr. Quiñones’ team.

Tito is funded by the Universidad de Santander, Colombia and the Neurotrauma Center I.P.S.

Omar Antonio Pérez-Morales M.D.

Omar joined Dr. Quiñones' team in March of 2015. Omar is a Major Medical Military Surgeon at the Secretariat of National Defense in Mexico and currently in his last year of Neurosurgery residency at the National Autonomous University of Mexico in the Juarez of Mexico Hospital. He enrolled in the army in September of 1999 and obtained his Medical Degree from the Military Medical School with Honors for his professional thesis, completing his internship and postgraduate internship at the Military Central Hospital in 2007. He entered into the general surgery residency in 2009 and in 2011, entered the Neurosurgery residency. Currently his is completing a postdoctoral research fellowship in Neuro-Oncology at The Johns Hopkins University School of Medicine. His primary research interest is to study and understand the diversity of skull base tumors and the variety of surgical approaches to skull base lesions. Currently he is assisting with the development of the book "Comprehensive Multimedia Video Atlas of Skull Base Surgery and Tumors”. Omar has also completed many military courses, including the Special Forces course and parachuting. In his free time Omar greatly enjoys sports and particularly soccer.