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GASTROINTESTINAL Table of Contents   
Year : 2006  |  Volume : 16  |  Issue : 4  |  Page : 457-461
CT angiography in evaluation of vascular anatomy and prevalence of vascular variants in upper abdomen in cancer patients


Rajiv Gandhi Cancer Institute & Research Centre, Sect-5, Rohini, New Delhi-110085, India

Correspondence Address:
K S Rawat
Rajiv Gandhi Cancer Institute & Research Centre, Sect-5, Rohini, New Delhi- 110085
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0971-3026.32246

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Objectives- To evaluate and describe vascular anatomy and the prevalence of vascular variants in upper abdomen in cancer patients with CT angiography to provide roadmap to surgeons to ensure safe surgery. Materials and Methods- A total of 125 cancer patients were evaluated by a Dual-slice spiral CT scanner with maximum intensity projections (MIP) and 3-D postprocessing.We compared CT angiographic findings with intra-operative findings in 62 patients who underwent surgery. Results- CT angiography was found very accurate to evaluate vascular anatomy.In our study of 125 patients 76 ( 61%) of patients showed variations:37 (30%) had single variations and 39 (31%) had more than one variation. The classic hepatic arterial anatomy,with the hepatic artery dividing into right and left hepatic arteries is seen in 53% of patients.Left hepatic artery variations in 26 (21%) patients,right hepatic artery variations in29 (23%) patients, and common hpatic artery variations in 4 (3%) patients were noted. Variations were also seen in hepatic veins, inferior phrenic arteries and, renal arteries and veins.Renal artery variations were seen in 33 (26.4) patients and renal veins variations in 19 (15%) patients. CT angiographic findings were similar to intra-operative findings in 61 (98%) patients who underwent surgery.In one patient we could not visualize an accessory right hepatic artery but it was visualized in retrosperct study arising from gastroduodenal artery. Conclusion- CT angiography is safe and highly sensitve and accurate modality for evaluation of vascular anatomy.


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