PMC2637837_01
The aorta, dividing into a 15 mm diameter ventral branch and an 8 mm diameter dorsal branch at level L1/2.
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F1
The following vascular situation was seen: the aorta produced a first lumbar artery at level L1 before dividing into a 15 mm diameter ventral branch and an 8 mm diameter dorsal branch at level of the disc L1/2 (Figure 1).
The ventral branch dividing into a 4 mm wide medial sacral artery and a 6 mm wide stem proceeding to the left side.
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F2
The dorsal branch, considered the aorta, first produced a common stem of a second lumbar artery before dividing into a 4 mm wide median sacral artery and a 6 mm wide branch proceeding to the left side (Figure 2).
Then taking a position dorsal to the left psoas muscle.
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F3
The latter branch took a position dorsal to the left psoas muscle, where it still had a diameter of 6 mm, producing the superior gluteal artery (Figure 3), inferior gluteal artery, and left obturator artery in that order, and anastomized immediately thereafter at the level of the femoral head with an 8.5 mm diameter artery coming from the right and crossing over infraperitoneal (Figure 4).
Then anastomizing with an 8.5 mm diameter artery coming from the right and crossing over infraperitoneal. It continued a normal course as the left common femoral artery.
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F4
The latter branch took a position dorsal to the left psoas muscle, where it still had a diameter of 6 mm, producing the superior gluteal artery (Figure 3), inferior gluteal artery, and left obturator artery in that order, and anastomized immediately thereafter at the level of the femoral head with an 8.5 mm diameter artery coming from the right and crossing over infraperitoneal (Figure 4).
The ostia of the left renal artery immediately dorsal to that of the inferior mesenteric artery (IMA), branching off the IUA.
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F5
The ostia of the left renal artery was immediately dorsal to that of the inferior mesenteric artery (IMA) (Figure 5), while the left renal vein crossed over to the right side dorsal to the impar umbilical artery and ventral to the aorta.
The ostium of the right ovarian artery, branching off the IUA.
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F6
Somewhat further caudal, still at the level of L2, the right ovarian artery branched off (Figure 6), before dividing into a short right common iliac artery and the already mentioned vessel crossing over infraperitoneal to the left side.
Approximately 70  LAO rotated semitransparent volume rendering reconstruction view of the partially wavy left aorta.
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F7
Figure 7 shows an approx. 70  LAO rotated semitransparent volume rendering reconstruction view of the partially wavy left aorta,
Approximately 70  RAO rotated semitransparent volume rendering reconstruction view of the impar umbilical artery, including the branch of the uterine artery.
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F8
Figure 8 shows an approx. 70  RAO rotated semitransparent volume rendering reconstruction view of the impar umbilical artery, including the branch of the uterie artery. Figure 9 shows a schematic rendering of the vascular situation, drawn from the volume rendering reconstructions of the CT and MRI images.
Shows a schematic rendering of the vascular situation, drawn from a series of volume rendering, and maximum intensity projection reconstructions of the CT and MRI images. ICA - Inferior communicating artery; IMA - Inferior Mesenteriv Artery; IUA - Impar Umbilica Artery; LFA - Left Femoral Artery; LOA - Left Obturatory Artery; LIGA - Left Inferior Gluteal Artery; LRA - Left Renal Artery; LSGA - Left Superior Gluteal Artery; MSA - Median Sacral Artery; RFA - Right Femoral Artery; RIGA - Right Inferior Gluteal Artery; ROA - Right Obturatory Artery; ROVA - Right Ovarian Artery; RSGA - Right Superior Gluteal Artery; UA - Uterine Artery.
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F9
Figure 8 shows an approx. 70  RAO rotated semitransparent volume rendering reconstruction view of the impar umbilical artery, including the branch of the uterie artery. Figure 9 shows a schematic rendering of the vascular situation, drawn from the volume rendering reconstructions of the CT and MRI images.