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Persistent proatlantal intersegmental artery: a consideration based on multi-slice spiral computed tomography angiography.
Surg Radiol Anat
December 2024
Department of Neurology, The Second People's Hospital of Banan District, Chongqing, 400042, China.
Background: Multi-slice spiral computed tomography (CT) angiography (MSCTA) has become the primary non-invasive image technique for evaluating cephalic and cervical vascular anatomy, especially vascular variant such as persistent carotid-basilar anastomosis. Persistent proatlantal intersegmental artery (PPIA) is an example of a rare persistent carotid-basilar anastomosis that deserves to be featured through this imaging technic.
Purpose: The aim of this study is to explore the imaging characteristics of the PPIA using MSCTA and to assess its clinical significance.
Primitive proatlantal intersegmental artery associated with moyamoya disease: A case report.
Radiol Case Rep
December 2024
Department of Neurosurgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China.
Primitive proatlantal intersegmental artery (PPIA) is rare and can be divided into types I and II. PPIAs can be associated with some anatomical variations and vascular diseases. However, no case of PPIA combined with moyamoya disease (MMD) has been reported.
View Article and Find Full Text PDFBilateral concurrent type I and type II persistent proatlantal arteries: A case report.
Radiol Case Rep
November 2024
Department of Radiology, Robert Wood Johnson University Hospital, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA.
Transient embryonic carotid-vertebrobasilar anastomoses can intermittently persist beyond the embryonic period. These vascular anomalies are often serendipitously identified during evaluation for unrelated disease states and pathologies. The persistent proatlantal intersegmental artery is one such recognized rare fetal anastomotic connection, often arising unilaterally.
View Article and Find Full Text PDFAberrant course of the right petrous internal carotid artery (ICA) associated with right type 1 proatlantal artery and bilateral occipital arteries arising from the ICA diagnosed by computed tomography angiography.
Surg Radiol Anat
October 2024
Department of Neurosurgery, Saitama Sekishinkai Hospital, 2-37-20 Irumagawa, Sayama, 350-1305, Saitama, Japan.
Purpose: To describe a case of multiple extremely rare cervical arterial variations.
Methods: A 55-year-old man with a tentative diagnosis of right internal carotid artery (ICA) stenosis was examined using computed tomography (CT) angiography for the evaluation of vascular lesions in the neck and head region. A 64-slice CT machine was used.
[Persistent Primitive Arteries].
No Shinkei Geka
May 2024
Division of Neuroendovascular Surgery, Center for Endovascular Therapy, Jichi Medical University Hospital.
Primitive anastomotic arteries temporarily exist between the future internal carotid and vertebrobasilar arteries during the early embryonic period(between 28 and 32 days of life). The primitive trigeminal, otic, hypoglossal, and proatlantal intersegmental arteries serve as major blood channels to the developing vertebrobasilar circulation at this stage. These arteries are replaced by the posterior communicating and vertebral arteries, and the primitive anastomotic arteries rapidly regress following the development of the definitive vertebrobasilar circulation.
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