PMC8319599_01
PMC8319599_02
The left lower extremity swelling.
fped-09-694782-g0001.jpg
PMC8319599_02_fped-09-694782-g0001.jpg
F1
It was 29 and 24 cm on the not-normal left side and 27 and 22 cm on the normal right side (see Figure 1).
(A) CTA in the transverse plane showed the left common iliac vein (black arrows) was compressed between the right common iliac artery (white arrow) and the lumbar vertebral body. (B) MRI images indicated that there was filling defect where the left common iliac vein merged into the right common iliac vein.
fped-09-694782-g0002.jpg
PMC8319599_02_fped-09-694782-g0002.jpg
F2
Computer tomography angiography (CTA) showed no obvious abnormality in the whole aorta, but the images in the transverse plane showed that the left common iliac vein was compressed between the right common iliac artery and the lumbar vertebral body (see Figure 2A). Magnetic resonance imaging (MRI) confirmed the presence of compression (see Figure 2B).
Anteroposterior (A) and lateral (B) angiography showed that the anterior end of the narrow left common iliac vein was dilated and had filling defect (black arrows).
fped-09-694782-g0003.jpg
PMC8319599_02_fped-09-694782-g0003.jpg
F3
The angiography process was as follows: First, angiography of the left and right femoral vein was performed: the anterior and posterior diameters of the left common iliac vein were narrowed, and the left and right diameters were broadened where the left common iliac vein merged into the right common iliac vein; the anterior end of the narrow left common iliac vein was dilated and had filling defect (see Figure 3).
(A,B) The aorta descended diagonally on the right side along the middle of the spine. (C) Aortogram of a boy suspected of renal artery stenosis used as a control.
fped-09-694782-g0004.jpg
PMC8319599_02_fped-09-694782-g0004.jpg
F4
In addition, the thoracic aorta, abdominal aorta, and femoral artery were examined: the aorta was found to be abnormal at the diaphragmatic level, descending diagonally on the right side along the middle of the spine (see Figure 4).