Computed tomography angiography revealed approximately 70% stenosis in the lumen of the proximal segment
of the left common carotid artery (CCA).
The LAD was large and it showed 99% stenosis in proximal segment
with thrombolysis in myocardial infarction (TIMI) II flow.LAD was a large vessel curving around the apex of the left ventricle and continuing as the PDA, and supplying most of the inferior septum.
The proximal segment
, about 3 cm in length, appeared normal.
The 1+1 VAR used in this study, which includes a transfixation pin through the distal aspect of the proximal segment
, is stiffer than a "standard" 1+1 construct, which includes a transfixation pin through the proximal aspect of the proximal segment
Subsequent OCT confirmed good stent expansion without strut malapposition, while IVUS showed the proximal segment
of the new stent protruded approximately 7 mm into the aorta [Figure 1]h.
Dynamic computed tomography scans showed fusiform aneurysmal enlargement in the proximal segment
of the intrahepatic right portal vein (Figure 2a, 2b).
Intussusception is telescoping of a proximal segment
of the gastrointestinal tract into an adjacent distal segment.
The classic deformity that occurs in ST femur fractures is proximal segment
abduction, external rotation, and flexion caused by the pull of the gluteus medius, gluteus minimus, the short external rotators, and iliopsoas and adduction of the distal fragment by the gracilis and adductor muscle groups.
Caption: Figure 1: The left anterior oblique coronary angiography view showed severe calcified stenosis of the proximal segment
of the right coronary artery (RCA) with anomalous origin.
Without the use of any feasible technique to gain control of the proximal segment
, there is a high risk of malocclusion and proximal fragment positional change.
The decision of revascularization should be made carefully and selectively: interventional percutaneous treatment is required in case of involvement of the proximal segment
of a coronary artery with persistent angina or anginal recurrence; ischemia limited to a small territory and patients who presented at acute phase [28-30].