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Ernest Joseph Barthélemy, Christopher A. Sarkiss, James Lee and Raj K. Shrivastava

The historical origin of the meningioma nomenclature unravels interesting social and political aspects about the development of neurosurgery in the late 19th century. The meningioma terminology itself was the subject of nationalistic pride and coincided with the advancement in the rise of medicine in Continental Europe as a professional social enterprise. Progress in naming and understanding these types of tumor was most evident in the nations that successively assumed global leadership in medicine and biomedical science throughout the 19th and 20th centuries, that is, France, Germany, and the United States. In this vignette, the authors delineate the uniqueness of the term “meningioma” as it developed within the historical framework of Continental European concepts of tumor genesis, disease states, and neurosurgery as an emerging discipline culminating in Cushing's Meningiomas text.

During the intellectual apogee of the French Enlightenment, Antoine Louis published the first known scientific treatise on meningiomas. Like his father, Jean-Baptiste Louis, Antoine Louis was a renowned military surgeon whose accomplishments were honored with an admission to the Académie royale de chirurgie in 1749. His treatise, Sur les tumeurs fongueuses de la duremère, appeared in 1774. Following this era, growing economic depression affecting a frustrated bourgeoisie triggered a tumultuous revolutionary period that destroyed France's Ancien Régime and abolished its university and medical systems. The resulting anarchy was eventually quelled through legislation aiming to satisfy Napoleon's need for qualified military professionals, including physicians and surgeons. These laws laid the foundations for the subsequent flourishing of French medicine throughout the mid-19th century. Subsequent changes to the meningioma nomenclature were authored by intellectual giants of this postrevolutionary period, for example, by the Limogesborn pathologist Jean Cruveilhier known for the term “tumeurs cancéreuses de la duremère,” and the work of histopathologists, such as Hermann Lebert, who were influenced by Pasteur's germ theory and by Bernard's experimental medicine.

The final development of the meningioma nomenclature corresponded to the rise of American neurosurgery as a formal academic discipline. This historical period of growth is chronicled in Cushing's text Meningiomas, and it set the scientific stage for the modern developments in meningioma research and surgery that are conducted and employed today.

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Daniel G. Eichberg, Ashish H. Shah, Long Di, Alexa M. Semonche, George Jimsheleishvili, Evan M. Luther, Christopher A. Sarkiss, Allan D. Levi, Sakir H. Gultekin, Ricardo J. Komotar and Michael E. Ivan


In some centers where brain tumor surgery is performed, the opportunity for expert intraoperative neuropathology consultation is lacking. Consequently, surgeons may not have access to the highest quality diagnostic histological data to inform surgical decision-making. Stimulated Raman histology (SRH) is a novel technology that allows for rapid acquisition of diagnostic histological images at the bedside.


The authors performed a prospective blinded cohort study of 82 consecutive patients undergoing resection of CNS tumors to compare diagnostic time and accuracy of SRH simulation to the gold standard, i.e., frozen and permanent section diagnosis. Diagnostic accuracy was determined by concordance of SRH-simulated intraoperative pathology consultation with a blinded board-certified neuropathologist, with official frozen section and permanent section results.


Overall, the mean time to diagnosis was 30.5 ± 13.2 minutes faster (p < 0.0001) for SRH simulation than for frozen section, with similar diagnostic correlation: 91.5% (κ = 0.834, p < 0.0001) between SRH simulation and permanent section, and 91.5% between frozen and permanent section (κ = 0.894, p < 0.0001).


SRH-simulated intraoperative pathology consultation was significantly faster and equally accurate as frozen section.

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Alexander G. Chartrain, Ahmed J. Awad, Christopher A. Sarkiss, Rui Feng, Yangbo Liu, J Mocco, Joshua B. Bederson, Stephan A. Mayer, Neha S. Dangayach and Errol Gordon


Patients who have experienced subarachnoid hemorrhage (SAH) often receive care in the setting of the ICU. However, SAH patients may not all require extended ICU admission. The authors established a protocol on January 1, 2015, to transfer select, low-risk patients to a step-down unit (SDU) to streamline care for SAH patients. This study describes the results of the implemented protocol.


In this retrospective chart review, patients presenting with SAH between January 2011 and September 2016 were reviewed for inclusion. The control group consisted of patients admitted prior to establishment of the SDU transfer protocol, while the intervention group consisted of patients admitted afterward.


Of the patients in the intervention group, 79.2% (57/72) were transferred to the SDU during their admission. Of these transferred patients, 29.8% (17/57) required return to the neurosurgical ICU (NSICU). There were no instances of morbidity or mortality directly related to care in the SDU. Patients in the intervention group had a mean reduced NSICU length of stay, by 1.95 days, which trended toward significance, and a longer average hospitalization, by 2.7 days, which also trended toward significance. In-hospital mortality and 90-day readmission rate were not statistically different between the groups. In addition, early transfer timing prior to 7 days was associated with neither a higher return rate to the NSICU nor higher 90-day readmission rate.


In this retrospective study, the authors demonstrated that the transfer protocol was safe, feasible, and effective in reducing the ICU length of stay and was independent of transfer timing. Confirmation of these results is needed in a large, multicenter study.