Perihilar branching patterns of renal artery and extrarenal length of arterial branches and tumour-feeding arteries on multidetector CT angiography

W. Y. Kang, D. J. Sung, B. J. Park, M. J. Kim, N. Y. Han, S. B. Cho, C. H. Kang, S. H. Kang

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Objective: The purpose of our study was to assess the extrarenal length of renal arterial branches and tumour-feeding arteries on multidetector CT (MDCT) angiography, in addition to the perihilar branching patterns, with relevance to segmental artery clamping. Methods: MDCT angiograms of 64 patients with renal masses ,4 cm were retrospectively reviewed by 2 radiologists. The perihilar branching patterns of the single main renal artery were assessed according to the number of pre-segmental and segmental arteries. The extrarenal lengths of segmental plus pre-segmental arteries and the tumourfeeding arteries, measured on volumerendered images, were compared according to the vascular segmentation and the tumour location, respectively. Results: In the 116 kidneys, 1 pre-segmental plus 5 segmental arteries (n548) was the most common branching pattern. The mean extrarenal length of the inferior segmental plus pre-segmental arteries (33.05mm) and the posterior segmental plus pre-segmental arteries (32.30mm) was longer than any of the other segmental plus pre-segmental arteries (apical, 23.87mm, superior, 26.80mm, middle, 29.23mm) (p,0.05). The mean extrarenal length of the lower pole tumour-feeding arteries (35.94mm) was longer than those of the upper and mid-pole tumour-feeding arteries (24.95mm, 29.62mm), with significant difference between the lower and the upper pole tumour-feeding arteries (p,0.05). Conclusion: Tumours in the lower pole, supplied by the inferior or posterior segmentalartery, may be more amenable to segmental artery clamping. Advances in knowledge: MDCT angiography with volume rendering can demonstrate the extrarenal length of tumour-feeding arteries and may help in determining the accessibility for segmental artery clamping.

Original languageEnglish
Article number20120387
JournalBritish Journal of Radiology
Volume86
Issue number1023
DOIs
Publication statusPublished - 2013 Mar 1

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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