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Complete surgical resection of abnormal brain tissue is the most important predictor of seizure freedom following surgery for cortical dysplasia. While lesional tissue is often visually indiscernible from normal brain, anecdotally, it is subjectively stiffer. We report the first experience of the use of a digital tonometer to understand the biomechanical properties of epilepsy tissue and to guide the conduct of epilepsy surgery. Consecutive epilepsy surgery patients (n = 24) from UCLA Mattel Children's Hospital were recruited to undergo intraoperative brain tonometry at the time of open craniotomy for epilepsy surgery. Brain stiffness measurements were corrected with abnormalities on neuroimaging and histopathology using mixed-effects multivariable linear regression. We collected 249 measurements across 30 operations involving 24 patients through the pediatric epilepsy surgery program at UCLA Mattel Children's Hospital. On multivariable mixed-effects regression, brain stiffness was significantly associated with the presence of MRI lesion (β = 32.3, 95%CI 16.3-48.2; p

Physicians, nurses, medical students, and nursing students from around the world are familiar with the Sister Mary Joseph nodule. It can appear in the subcutis of the umbilicus in persons who have malignancies of the stomach, pancreas, gynecological organs or urinary tract, or sometimes the respiratory tract. The mystery is how the term traveled overseas from a in Rochester, Minnesota, where Sister Joseph worked, to England, where it first appeared in publication in a textbook by a British surgeon, Hamilton Bailey. There is no record of Bailey ever meeting Sister Joseph or the Mayo brothers, or of his traveling to Mayo Clinic. This article explores the life of Sister Joseph, her influence on Dr William J. Mayo, and the life of Bailey., (© 2021 American Association of Clinical Anatomists.)