case_images: PMC10421584_01
case_images: Azygos and hemiazygos system hypertrophy.
case_images: jvb-22-e20220126-g01.jpg
case_images: PMC10421584_01_jvb-22-e20220126-g01.jpg
case_images: gf01
case_images: In computed angiotomography (AngioCT) we observe IVC agenesis with large collateral circulation in lumbar and hemorrhoidal plexus, as well as azygos and hemiazygos system hypertrophy (Figure 1 and Figure 2).
case_images: (White arrows) Azygos and hemiazygos system hypertrophy; (black arrows) thrombosed iliac veins.
case_images: jvb-22-e20220126-g02.jpg
case_images: PMC10421584_01_jvb-22-e20220126-g02.jpg
case_images: gf02
case_images: In computed angiotomography (AngioCT) we observe IVC agenesis with large collateral circulation in lumbar and hemorrhoidal plexus, as well as azygos and hemiazygos system hypertrophy (Figure 1 and Figure 2).
case_images: PMC10421584_02
case_images: (A) Left iliac vein ascending along the back of the psoas; (B) hypoplastic left renal vein; (C) varicose veins connecting with the superficial femoral vein at the right groin.
case_images: jvb-22-e20220126-g03.jpg
case_images: PMC10421584_02_jvb-22-e20220126-g03.jpg
case_images: gf03
case_images: This Angio-CT shows infrarenal IVC agenesis with common iliac veins running through different routes: on the right side adjacent to the aorta and on the left side ascending along the back of the psoas with a paravertebral course and final drainage into the azygos and hemiazygos system; varicose veins are also observed connecting with the right femoral vein (Figure 3).