This document discusses primary central nervous system (CNS) tumors in adults. It notes that the most common primary CNS tumors are glioblastoma multiforme and meningiomas. Glioblastoma multiforme is the most common malignant primary brain tumor in adults, typically appearing in the brain's white matter. Meningiomas originate from the meninges and present as dura-attached masses that push on the brain. Other primary CNS tumors discussed include hemangioblastoma, schwannoma, oligodendroglioma, and pituitary adenomas. The text provides details on clinical manifestations, diagnostic imaging, histopathological characteristics, and treatments for each of these tumor types.
This document discusses the high rates of smoking among people with schizophrenia and possible reasons for this connection. It notes that schizophrenia affects normal brain functioning and that nicotine activates the brain's reward system by increasing dopamine release. Some hypotheses are that smoking may help regulate the dysfunctional dopamine system in schizophrenia patients or that repeated nicotine activation could precipitate the onset of the illness. However, smoking also leads to worse health outcomes and requires higher medication doses in this group. Treating nicotine addiction could help address these issues.
This document contains 20 quiz cases related to neuroimaging. Each case provides the radiological sign, associated condition, and brief description. The cases cover a wide range of neurologic conditions seen on CT and MRI, including infections, demyelinating diseases, vascular abnormalities, tumors and developmental anomalies. Key information about the featured conditions is also summarized.
This document discusses primary central nervous system (CNS) tumors in adults. It notes that the most common primary CNS tumors are glioblastoma multiforme and meningiomas. Glioblastoma multiforme is the most common malignant primary brain tumor in adults, typically appearing in the brain's white matter. Meningiomas originate from the meninges and present as dura-attached masses that push on the brain. Other primary CNS tumors discussed include hemangioblastoma, schwannoma, oligodendroglioma, and pituitary adenomas. The text provides details on clinical manifestations, diagnostic imaging, histopathological characteristics, and treatments for each of these tumor types.
This document discusses the high rates of smoking among people with schizophrenia and possible reasons for this connection. It notes that schizophrenia affects normal brain functioning and that nicotine activates the brain's reward system by increasing dopamine release. Some hypotheses are that smoking may help regulate the dysfunctional dopamine system in schizophrenia patients or that repeated nicotine activation could precipitate the onset of the illness. However, smoking also leads to worse health outcomes and requires higher medication doses in this group. Treating nicotine addiction could help address these issues.
This document contains 20 quiz cases related to neuroimaging. Each case provides the radiological sign, associated condition, and brief description. The cases cover a wide range of neurologic conditions seen on CT and MRI, including infections, demyelinating diseases, vascular abnormalities, tumors and developmental anomalies. Key information about the featured conditions is also summarized.