Medical Journal of the Islamic Republic Of Iran
مجله پزشکی جمهوری اسلامی ایران
Med J Islam Repub Iran
Medical Sciences
http://mjiri.iums.ac.ir
2
journal2
1016-1430
2251-6840
8
10.18869/mjiri
14
8888
13
en
jalali
1380
2
1
gregorian
2001
5
1
15
1
online
1
fulltext
en
VARIATIONS IN THE CIRCULUS ARTERIOSUS OF WILLIS: AUTOPSY FINDINDS IN 101 HUMAN CADAV ERS
Neurosurgery
Neurosurgery
Original Research
Original Research
In order to evaluate the microvascular anatomy and the interconnections,
101 fixed brains from human cadavers with a mean age of 41.3 years
were subjected to objective scrutiny. Symmetry was visualized with an
unaided eye and measurements made under microscopic magnification technique
using a micrometer.
Classic symmetry was observed in only 19 of the specimens, whereas the
rest of the 82 specimens revealed considerable variations in the form of diverse
anomalies. These anomalies consisted of hypoplasia (45 cases), duplication (40
cases), triplication (6 cases), fenestration (6 cases), aplasia (5 cases), aneurysm (2
cases), common trunk (1 case) and a rare presentation where the internal carotid
artery was found to have anastomosis with the posterior cerebral artery.
The frequency of anatomic variations and the presence of prevalent anomalies
at the circle of Willis underscore the difficulty in understanding various cerebral
vascular diseases and their anatomical knowledge and information serve to
adopt effective strategies in tackling such microvascular diseases.
Cerebral arteries, Circulus arteriosus, Circle of Willis, Arterial anomalies, Autopsy fi
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http://mjiri.iums.ac.ir/browse.php?a_code=A-10-298-270&slc_lang=en&sid=1
GHOLAMHUSSAIN
KHOSRAVI
20031947532846004212
20031947532846004212
Yes
From the Depts. Of Neurosurgery, Neurology Tehran University of Medical Sciences, Tehran, I.R. Iran.
SEYED ALI
FAKHR TABATABAI
20031947532846004213
20031947532846004213
No
MAJID
GHAFARPOUR
20031947532846004214
20031947532846004214
No
From the Depts. Of Neurosurgery, Neurology Tehran University of Medical Sciences, Tehran, I.R. Iran.
HASSAN
TOUFIGHI
20031947532846004215
20031947532846004215
No
From the Depts. Of Forensic MedicineTehran University of Medical Sciences, Tehran, I.R. Iran.