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does anyone know what is |
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Virchow-Robin spaces are spaces (often only potential) that surround blood vessels for a short distance as they enter the brain. In advanced or fulminant cases of cryptococcal meningitis, the yeast invades the brain parenchyma along the Virchow-Robin spaces. but it's not a case of where there is one there has to be the other! Their wall is formed by prolongations of the pia mater. Virchow-Robin spaces are invaginations of the subarachnoid space into the brain associated with leptomeningeal vessels; these are extensions of the subarachnoid spaces in the form of a sheath of pial cells that surround small arterial and partly also venous vessels down to the capillary level. This sheath divides the subarachnoid space into an inner section (between vessel and pia) that takes the role of extracerebral lymphatic drainage, and an outer part (between pia and arachnoid). Dilated perivascular spaces occur in characteristic locations, typically in the basal ganglia, around the atria, near the anterior commissure, in the corona radiata, centrum semiovale, periinsular region, and in the middle of the brain stem, medial and posterior to the reticular portion of the substantia nigra. Usually they follow the intensity of CSF. Occasionally, gliosis may be associated with these spaces. A vacuolated lacune may simulate a Virchow-Robin space on FLAIR/PDWI. Virchow-Robin spaces tend to enlarge with age and hypertension as the vessels within the space become more ectatic. Dilated Virchow-Robin spaces in young immunosuppressed patients is concerning for possibility of intracranial cryptococcus infection. |
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prominent virchow-robin what do virchow-robin spaces
indicate in an otherwise
healthy 20 year old female?
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The Virchow-Robin space is a tunnel like sheath that surrounds blood vessels that enter the surface of the brain passing through arachnoid layer. The arachnoid layer is a saran wrap like layer that surrounds the brain. If a blood vessel passes through this before entering the brain (which many normally do) the arachnoid layer will continue to surround the vessel as it penetrates the brain. Occasionally on an MRI scan of the brain the spaces will be somewhat prominent meaning wider than normal and the radiologist will report it. This is completely normal and does not mean anything is wrong. |
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Virchow Robin???
I had a stroke a little over a
year ago, I was 32. Noone
knows what caused it. Ive had
MRI's, and CAT's done, blood
tests and everything. But, the
last MRI I had done said that
it hasnt changed much since
the last MRI, which is good, I
guess. Its written in
"chinese", and I cant
understand it. The report said
"There are slightly prominent
Virchow Robin spaces". And it
also said "Within the left
external capsule, there is a
1.5-cm area of increased 12
signal intensity, this
demonstrates decreased T1
signal intensity and no
evidence of enhancement."
Does anyone know what the heck
that means??? I really dont
want to freak out and set up
an appointment with another
neurologist, but, Im thinking
I might have to.
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Spaces (often only potential) that surround blood vessels for a short distance as they enter the brain. Their wall is formed by prolongations of the pia mater The spaces function as pathways for the drainage of interstitial fluid, are in direct connection with the subpial space, separated by a single layer of pia mater from the subarachnoid space and are in communication with lymphatic channels of the head and neck, leading to cervical lymph nodes. Called also His' perivascular spaces and perivascular spaces. Called after Rudolf Virchow and Charles Philippe Robin (French anatomist, 1821–1885). Retrieved from "http://en.wikipedia.org/wiki/ Virchow-Robin_spaces" The definition is easy. What to do does require a neurologist. |
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Questions on Rudolf Virchow.?
* How did Virchow contribute
to the cell theory?
* When did he make his
contribution to the cell
theory?
* How did his invention, idea,
or experiment help lead to the
rejection of spontaneous
generation?
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He pioneered the modern concept of pathological processes by his application of the cell theory to explain the effects of disease in the organs and tissues of the body. He emphasized that diseases arose, not in organs or tissues in general, but primarily in their individual cells. |
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In what order did these (1) Zacharias Janssen
(2) Robert Hooke
(3) Anton van Leeuwenhoek
(4) Schleiden and Schwann
(5) Rudolph Virchow
Please do not put the year
they were born, just what year
they made there discoveries.
Thanks!
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It looks like they are already in order #1- invented microscope with his dad in 1590 2- his book and research was mainly in the 1660's 3 was late 1660's to early 1700's (the artcile i read said he was inspired by #2 4-The CELL THEORY, or cell doctrine, states that all organisms are composed of similar units of organization, called cells. The concept was formally articulated in 1839 by Schleiden & Schwann and has remained as the foundation of modern biology. 5 late 1850's to 1890's |
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