An arterial venous malformation of the left kidney and a simple cyst of the right kidney An arterial venous malformation of the left kidney leading to aneurysmal dilatation of the left renal vein and inferior vena cava AVMs are diagnosed primarily by the following imaging methods: * Computerized tomography (CT) scan is a noninvasive X-ray to view the anatomical structures within the brain to detect blood in or around the brain. A newer technology called CT angiography involves the injection of contrast into the blood stream to view the arteries of the brain. This type of test provides the best pictures of blood vessels through angiography and soft tissues through CT. * Magnetic resonance imaging (MRI) scan is a noninvasive test, which uses a magnetic field and radio-frequency waves to give a detailed view of the soft tissues of the brain. * Magnetic resonance angiography (MRA) – scans created using magnetic resonance imaging to specifically image the blood vessels and structures of the brain. A magnetic resonance angiogram can be an invasive procedure, involving the introduction of contrast dyes (e.g., gadolinium MR contrast agents) into the vasculature of a patient using a catheter inserted into an artery and passed through the blood vessels to the brain. Once the catheter is in place, the contrast dye is injected into the bloodstream and the MR images are taken. Additionally or alternatively, flow-dependent or other contrast-free magnetic resonance imaging techniques can be used to determine the location and other properties of the vasculature. AVMs can occur in various parts of the body: * brain (cerebral AV malformation) * spleen * lung * kidney * spinal cord * liver * intercostal space * iris * spermatic cord * extremities – arm, shoulder, etc. AVMs may occur in isolation or as a part of another disease (for example, Von Hippel-Lindau disease or hereditary hemorrhagic telangiectasia). AVMs have been shown to be associated with aortic stenosis. Bleeding from an AVM can be relatively mild or devastating. It can<unk>  severe and less often fatal strokes. If a cerebral AVM is detected before a stroke occurs, usually the arteries feeding blood into the nidus can be closed off to avert the danger. However, interventional therapy may also be relatively risky.
medical cause of Intracerebral hemorrhage
symptom of Intracerebral hemorrhage
medical cause of Epidural hematoma
medical cause of Subarachnoid hemorrhage
medical cause of Stroke
symptom of Meningioma
medical cause of Vertebral artery dissection
symptom of Idiopathic intracranial hypertension