الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Incidental arterial abnormalities are becoming common entity during imaging as there has been an extended use of computed tomography with contrast material in the evaluation of varied symptoms and pathologies.
The present work was carried out retrospectively to review Chest and Abdominal CT scans and identify arterial abnormalities incidentally noted on these scans.
To achieve this aim, the present study included 94 scans that had incidental arterial abnormalities.
The CT scans were obtained from the Department of radiodiagnosis and intervention in Alexandria Main University Hospital during 6 months’ period from September 2020 to February 2021.
Total of 94 CT scans (77 abdominal and 17 chest CT scans) had 115 incidental arterial abnormalities. The most common arterial abnormalities were encountered in the abdominal CT scans.
93.0% of this study were anatomic variants (Congenital) and 7% were acquired pathologies.
Abdominal anatomic Variants were 80.8%; from which renal arterial variants were the most common abnormalities (34.8%), followed by hepatic arterial variants (26.9%) and celiac trunk variants (19.1%).
In regard each organ; left accessory renal artery was the most common entity for renal variants (13.9%), for hepatic arterial system, Right hepatic artery arising from Superior mesenteric artery was the most common (18.2%) and for celiac trunk, this study found gastrosplenic trunk being the most frequent (13.0%) incidental variant.
Chest anatomic variants were 14 cases (12.2%) from which 7 cases (6.1%) were aberrant right subclavian artery, this was the most common variant from chest CT scans.
Abdominal aortic aneurysms and visceral aneurysms were 3.5%, visceral pseudoaneurysms were 0.9%, dissection of the right common iliac artery were 1.7% and penetrating ulcer of the aorta 0.9%
This study also noted existence of multiple anatomic variants in 19 scans (20.2%) and an association of anatomic variant together with aneurysm in a patient with Behcet Disease, this alarms radiologists to look for other arterial abnormalities in case of detection of one abnormality and attention should be given to patients with Behcet Disease.
Reporting anatomic variants during routine imaging can avoid devastating iatrogenic and intraoperative surgeries in different surgical subspecialities, other arterial abnormalities which are life threatening emergencies detected incidentally can be life saving for the patient and hence reduce mortality rates in hospitals.
In the current study, 17 (14.8%) of the anatomic variants were not reported by radiologists either by missing them or by not considering this as an important entity to be reported.
If variation is identified during imaging examination of one viscera, then it should be kept in mind that another variation may exist in other viscera as well and one should look more carefully to these variations.