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The utility of 64 channel multidetector CT angiography for evaluating the renal vascular anatomy and possible variations: a pictorial essay.

Kumar S, Neyaz Z, Gupta A - Korean J Radiol (2010)

Bottom Line: The increased use of laparoscopic nephrectomy and nephron-sparing surgery has prompted the need for a more detailed radiological evaluation of the renal vascular anatomy.Multidetector CT angiography is a fast and accurate modality for assessing the precise anatomy of the renal vessels.In this pictorial review, we present the multidetector CT angiography appearances of the normal renal vascular anatomy and a spectrum of various anomalies that require accurate vascular depiction before undergoing surgical treatment.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiodiagnosis, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India.

ABSTRACT
The increased use of laparoscopic nephrectomy and nephron-sparing surgery has prompted the need for a more detailed radiological evaluation of the renal vascular anatomy. Multidetector CT angiography is a fast and accurate modality for assessing the precise anatomy of the renal vessels. In this pictorial review, we present the multidetector CT angiography appearances of the normal renal vascular anatomy and a spectrum of various anomalies that require accurate vascular depiction before undergoing surgical treatment.

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Related in: MedlinePlus

Multiple supernumerary right renal veins in 27-year-old female voluntary kidney donor. Coronal oblique maximum intensity projection (A) and anterior oblique volume rendered (B) images show four right renal veins (arrows).
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Figure 9: Multiple supernumerary right renal veins in 27-year-old female voluntary kidney donor. Coronal oblique maximum intensity projection (A) and anterior oblique volume rendered (B) images show four right renal veins (arrows).

Mentions: The most commonly encountered venous anomalies are multiple renal veins, which are seen in approximately 15-30% of patients (5, 6). Multiple renal veins are more common on the right side and these occur in up to 30% of individuals (Figs. 8, 9). The other uncommon variants described on the right side include a late venous confluence and minor variants like drainage of a large gonadal vein into the right renal vein. On the right side, a late venous confluence is diagnosed when the renal vein branches coalesce within 1.5 cm of the anastomosis with the IVC (Fig. 10). In one series, late confluence of the venous trunk was reported in about 10% of the right kidneys (2). However, the presence of a late venous confluence on the right side has not been described by other studies as the authors observed that the right renal vein is short, and in almost all cases the confluence occurs within 1.5 cm from the IVC (5). Multiple right renal veins are a contraindication for donor nephrectomy because this variant is associated with a higher incidence of thrombosis of the graft renal vein (4).


The utility of 64 channel multidetector CT angiography for evaluating the renal vascular anatomy and possible variations: a pictorial essay.

Kumar S, Neyaz Z, Gupta A - Korean J Radiol (2010)

Multiple supernumerary right renal veins in 27-year-old female voluntary kidney donor. Coronal oblique maximum intensity projection (A) and anterior oblique volume rendered (B) images show four right renal veins (arrows).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2864862&req=5

Figure 9: Multiple supernumerary right renal veins in 27-year-old female voluntary kidney donor. Coronal oblique maximum intensity projection (A) and anterior oblique volume rendered (B) images show four right renal veins (arrows).
Mentions: The most commonly encountered venous anomalies are multiple renal veins, which are seen in approximately 15-30% of patients (5, 6). Multiple renal veins are more common on the right side and these occur in up to 30% of individuals (Figs. 8, 9). The other uncommon variants described on the right side include a late venous confluence and minor variants like drainage of a large gonadal vein into the right renal vein. On the right side, a late venous confluence is diagnosed when the renal vein branches coalesce within 1.5 cm of the anastomosis with the IVC (Fig. 10). In one series, late confluence of the venous trunk was reported in about 10% of the right kidneys (2). However, the presence of a late venous confluence on the right side has not been described by other studies as the authors observed that the right renal vein is short, and in almost all cases the confluence occurs within 1.5 cm from the IVC (5). Multiple right renal veins are a contraindication for donor nephrectomy because this variant is associated with a higher incidence of thrombosis of the graft renal vein (4).

Bottom Line: The increased use of laparoscopic nephrectomy and nephron-sparing surgery has prompted the need for a more detailed radiological evaluation of the renal vascular anatomy.Multidetector CT angiography is a fast and accurate modality for assessing the precise anatomy of the renal vessels.In this pictorial review, we present the multidetector CT angiography appearances of the normal renal vascular anatomy and a spectrum of various anomalies that require accurate vascular depiction before undergoing surgical treatment.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiodiagnosis, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India.

ABSTRACT
The increased use of laparoscopic nephrectomy and nephron-sparing surgery has prompted the need for a more detailed radiological evaluation of the renal vascular anatomy. Multidetector CT angiography is a fast and accurate modality for assessing the precise anatomy of the renal vessels. In this pictorial review, we present the multidetector CT angiography appearances of the normal renal vascular anatomy and a spectrum of various anomalies that require accurate vascular depiction before undergoing surgical treatment.

Show MeSH
Related in: MedlinePlus