I discuss issues pertaining to the practice of neuropathology -- including nervous system tumors, neuroanatomy, neurodegenerative disease, muscle and nerve disorders, ophthalmologic pathology, neuro trivia, neuropathology gossip, job listings and anything else that might be of interest to a blue-collar neuropathologist.
Friday, November 18, 2011
Neuropathology Focus of New SNO President's Address Today
Over 1400 attendees at 2011 SNO meeting in Anaheim
Dr. Aldape discussed brain tumor biomarkers
Same view as above, at 40X
Neuropathlogy took center stage at the Society for Neuro-Oncology (SNO) meeting today as Dr. Kenneth D. Aldape, neuropathogist at the University of Texas MD Anderson Cancer, was introduced as the next president of the society. Dr. Aldape also delivered an address to more than 1400 attendees about the future of surgical neuropathological reporting. Aldape's research centers on the clinical utility of brain tumor biomarkers as prognostic indicators. He described how the use of biomarkers will change the way surgical neuropathology diagnoses are rendered. He noted that the broad morphologic spectrum one sees in gliomas makes the recommendations of the World Health Organization sometimes difficult to implement. For example, the difference between a WHO grade II and grade III astrocytoma is based principally on whether or not mitotic figures are "brisk" as interpreted by the examining neuropathologist. Yet, the imprecision of that approach is obvious when one considers variables such as the diligence of the neuropathologist in identifying mitotic figures, the often equivocal morphology of apoptotic-versus-mitotic cells, as well as the variable technical quality of tissue processing and staining. The use of biomarkers will make diagnoses more reliable and will provide more useful prognostic information to the oncologist. Dr. Aldape projected onto the screen an example of a recent surgical
pathology report he had generated at MD
Anderson. The report highlighted the status of the several biomarkers, including G-CIMP, IDH1, pHH3, MIB1, 1p/19q deletion, and MGMT. Then, only in the
last sentence of the comment, was it noted that the histology and
biomarker profile was most consistent with a WHO grade III (anaplastic)
astrocytoma. It was as if the WHO diagnosis and grade were a perfunctory afterthought. Finally, Aldape noted that biomarkers will become even more important in the coming years as biomarker data becomes "actionable", allowing the oncologist to personalize the treatment of a particular tumor depending on the biomarker profile. These are exciting times....