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The brain parenchyma refers to the functional tissue in the brain that is made up of the two types of brain cell, neurons and glial cells. [7] It is also known to contain collagen proteins. [8] Damage or trauma to the brain parenchyma often results in a loss of cognitive ability or even death.
An angiogram will show whether the blood vessel is blocked by a clot, the blood vessel is narrowed, or if there is an abnormality of a blood vessel known as an aneurysm. Carotid duplex : A carotid duplex is an ultrasound study that assesses whether or not you have atherosclerosis (narrowing) of the carotid arteries.
Bloodstream infections (BSIs) are infections of blood caused by blood-borne pathogens. [1] The detection of microbes in the blood (most commonly accomplished by blood cultures [2]) is always abnormal. A bloodstream infection is different from sepsis, which is characterized by severe inflammatory or immune responses of the host organism to ...
Those with parenchymal contusion would require frequent follow-up imaging because such contusions may grow large enough to become hemorrhage and exerts significant mass effect on the brain. [ 3 ] Cerebral microhemorrhages is a smaller form of hemorrhagic parenchymal contusion and are typically found in white matter .
Meningovascular syphilis is often in the intermediate stage of neurosyphilis, typically presenting 5 to 12 years after infection. [6] It is due to inflammation of the blood vessels supplying the central nervous system, resulting in the death of brain tissue called ischemia. It may present as stroke or spinal cord injury. Signs and symptoms vary ...
Septic shock is low blood pressure due to sepsis that does not improve after fluid replacement. [9] Sepsis is caused by many organisms including bacteria, viruses, and fungi. [10] Common locations for the primary infection include the lungs, brain, urinary tract, skin, and abdominal organs. [2]
Necrotizing pneumonia (NP), also known as cavitary pneumonia or cavitatory necrosis, is a rare but severe complication of lung parenchymal infection. [1] [2] [3] In necrotizing pneumonia, there is a substantial liquefaction following death of the lung tissue, which may lead to gangrene formation in the lung.
Similarly, interstitial fluid is cleared from the brain parenchyma via the paravascular spaces surrounding large draining veins. [citation needed] Paravascular spaces are CSF-filled channels formed between the brain blood vessels and leptomeningeal sheathes that surround cerebral surface vessels and proximal penetrating vessels.