Most common site of intracranial hemorrhage

Subarachnoid hemorrhage is sudden bleeding into the subarachnoid space. The most common cause of spontaneous bleeding is a ruptured aneurysm. Symptoms include sudden, severe headache, usually with loss or impairment of consciousness. Secondary vasospasm (causing focal brain ischemia), meningismus, and hydrocephalus (causing persistent headache and obtundation) are common. Diagnosis is by CT or MRI; if neuroimaging is normal, diagnosis is by cerebrospinal fluid analysis. Treatment is with supportive measures and neurosurgery or endovascular measures, preferably in a comprehensive stroke center. Etiology of SAH Subarachnoid hemorrhage is bleeding between the arachnoid and pia mater. In general, Traumatic Brain Injury (TBI) Traumatic brain injury (TBI) is physical injury to brain tissue that temporarily or permanently impairs brain function. Diagnosis is suspected clinically and confirmed by imaging (primarily... read more is the most common cause of subarachnoid hemorrhage, but traumatic subarachnoid hemorrhage is usually considered a separate disorder. Spontaneous (primary) subarachnoid hemorrhage usually results from ruptured Brain Aneurysms Brain aneurysms are focal dilations in the cerebral arteries. In the US, brain aneurysms occur in 3 to 5% of people. Brain aneurysms can occur at any age but are most common among people aged... read more . A congenital intracranial saccular or berry aneurysm is the cause in about 85% of patients. Bleeding may stop spontaneously. Aneur...

What is Hemorrhagic Stroke? Hemorrhagic strokes make up about 13 % of stroke cases. They're caused by a weakened vessel that ruptures and bleeds into the surrounding brain. The blood accumulates and compresses the surrounding brain tissue. The two types of hemorrhagic strokes are intracerebral (within the brain) hemorrhage or subarachnoid hemorrhage. A hemorrhagic stroke occurs when a weakened blood vessel ruptures. Two types of weakened blood vessels usually cause hemorrhagic stroke: aneurysms and arteriovenous malformations (AVMs). Survivor Story: Eileen Haas Eileen Haas was folding laundry when she felt something “break” in her head. There was the sensation that something warm was cascading down her back, as if a blood vessel had burst. Lying on the floor in her second-floor bedroom, unable to move, Haas heard ambulance sirens growing closer and then the sound of paramedics running up the stairs. Doctors told her that she had suffered a hemorrhagic stroke, or bleed in her brain.

At the time the article was last revised Henry Knipe had the following disclosures: • Radiopaedia Events Pty Ltd, Speaker fees (past) • Integral Diagnostics, Shareholder (ongoing) • Micro-X Ltd, Shareholder (ongoing) These were assessed during peer review and were determined to not be relevant to the changes that were made. Intracranial hemorrhage ( ICH) is a collective term encompassing many different conditions characterized by the extravascular accumulation of blood within different intracranial spaces. A simple categorization is based on location: • intra-axial hemorrhage • • • • • • extra-axial hemorrhage • • • • • • Alternatively, intracranial hemorrhage can be thought of in terms of the underlying cause, although in most cases the same etiology can result in multiple different patterns of hemorrhage. • trauma • • • • • vascular malformation(s) • • • • • tumor-related hemorrhage • • • • Radiographic features CT CT scan is almost always the first imaging modality used to assess patients with suspected intracranial hemorrhage. Fortunately, acute blood is markedly hyperdense compared to brain parenchyma, and as such usually poses little difficulty in diagnosis (provided the amount of blood is large enough, and the scan is performed early). Similarly, MRI MRI is typically requested when an underlying abnormality is being sought, particularly when an underlying tumor is suspected. MRI of hemorrhage can pose some challenges in that the appearance of blood changes depending...