PT - JOURNAL ARTICLE AU - Thomas Gilbert AU - Sabrina Ait AU - Floriane Delphin AU - Emmanuel Raharisondraibe AU - Marc Bonnefoy TI - Frontal cortex dysfunction due to extensive hyperostosis frontalis interna AID - 10.1136/bcr.07.2011.4439 DP - 2012 Jan 11 TA - BMJ Case Reports PG - bcr0720114439 VI - 2012 4099 - http://casereports.bmj.com/content/2012/bcr.07.2011.4439.short 4100 - http://casereports.bmj.com/content/2012/bcr.07.2011.4439.full AB - An 87-year-old patient was found to have an unusually protrusive hyperostosis frontalis interna, discovered on MRI examination during an assessment of cognitive decline. Neuropsychological evaluation suggested direct repercussions of the frontal lobe compression on executive functions, as well as psychiatric disorders and possibly memory loss.