Publications by authors named "Nobutoshi Kumagai"
Background And Purpose: C-methionine (MET)-PET is a useful tool in neuro-oncology. The T2-fluid-attenuated inversion recovery (FLAIR) mismatch sign on MRI is a characteristic finding in lower grade gliomas with isocitrate dehydrogenase (IDH) mutations and the absence of the 1p/19q codeletion; however, the T2-FLAIR mismatch sign has low sensitivity in differentiating gliomas and does not aid in identifying glioblastomas with IDH mutations. We therefore investigated the efficacy of the combination of the T2-FLAIR mismatch sign and MET-PET for accurately determining the molecular subtype of gliomas of all grades.
View Article and Find Full Text PDFWhile hemorrhage can occur because of developmental venous anomalies (DVAs), there is no established opinion concerning their association with pregnancy and childbirth. In the present report, we discuss the case of a now 39-year-old woman with DVA in whom pregnancy and childbirth were successful. When she was 28, she experienced disturbance of consciousness and paralysis on the left side of the body, and brain computed tomography revealed cerebral hemorrhage coupled with subarachnoid hemorrhage.
View Article and Find Full Text PDFBackground: Bony structures around the carotid artery such as the styloid process and hyoid bone can cause dissection, compression, plaque formation, and plaque rupture of the carotid artery. To the best of our knowledge, this case is the first finding of thyroid cartilage being the cause of a lesion corresponding to adjacent common carotid artery (CCA) atherosclerosis.
Case Description: A 51-year-old man with a history of hypertension and dyslipidemia suddenly experienced right facial numbness and dysphasia while front crawl swimming, which he usually did 3 times weekly.