There are a number of theories put forward towards pathogenesis including the role of hormone dysregulators such as diethylstilbestrol, and epididymal duct stenosis with poststenotic
(23) 47 PA 6 with poststenotic
dilatation, 1 with thrombosis Lee et al.
There are 3 groups of aneurysms: poststenotic
, mycotic and iatrogenic.
The average ratio of poststenotic
dilated to narrowed celiac trunk was 2.8 (range, 1.6-7.4) in 30 patients with celiac trunk stenosis.
On voiding phase, anterior urethral stenosis and poststenotic
dilatation were observed.
 calculated blood flows in both axisymmetrical and asymmetrical stenosis models with three different area reductions and found that in axisymmetrical models, the poststenotic
blood flow is more sensitive to variations of the stenosis degree than in asymmetrical cases.
Caption: Figure 1: CTA at diagnosis showed severe segmental aortic stenosis arising before the origin of the upper mesenteric artery extending for a length of 3-4 cm with lumen diameter of 0.2-0.3 cm at the narrowest part and a poststenotic
diameter of 0.6-0.7 cm.
The authors attribute this finding to poststenotic
flow acceleration centered at the level of the renal arteries, which is further supported by follow-up duplex study that demonstrates decreased flow velocity through the renal arteries after placement of the aortic stent.
Infundibular pulmonic stenosis, poststenotic
dilation of the pulmonic trunk, and proximal main pulmonary arteries were identified, as well as a mild narrowing of the descending aorta compatible with aortic stenosis.
Predisposing conditions include congenital and acquired heart disease, such as left-to-right shunting or pulmonary valve stenosis with poststenotic
A carotid duplex scan revealed 80% (NASCET) hemodynamic stenosis of the right internal carotid artery (ICA) and a poststenotic
flow in both common carotid arteries.
Rubin, "Stenosis of the main artery supplying an organ: effect of end organ vascular compliance on the poststenotic
peak systolic velocity," Journal of Medical Ultrasound, vol.