If the vessel dissection enlarges distally, the MR signals in the pseudo-lumen of dissected vessels are affected by the turbulence of blood flow, and TOF MRA may not clearly depict blood flow within the pseudo-lumen [38, 39, 40].
Third, confirm if there is a neck lymph node metastasis because facial vessel dissection may impair the oncologic safety (the presence of lymph node metastasis is a contraindication for the use of this flap).
As the patient already had brain neuroimaging, cerebral vessel imaging was ordered to complete the evaluation for thunderclap headache and this included CT angiography of the head and neck vessels as well as brain venography and all studies were negative including no evidence for aneurysms, vessel dissection, vasospasm or thrombosis.
RAS secondary to medial FMD is characterised by a beaded, aneurysmal appearance localised to the distal two-thirds of the renal artery and its branches (Fig. 2a), whereas intimal and periarterial FMD is commonly associated with progressive vessel dissection and thrombosis [1].
Some give a figure of multiple vessel dissection as high as 30%.
Aortic tissue was kept in phosphate-buffered saline until gross vessel dissection (four 2-3 mm-long cross-sections) in proximal, aneurysmal, and distal areas and then held in 70% alcohol until processing.
Some children are more at risk of neurodevelopmental problems, either because of their cardiac (egextensive aortopulmonary collaterals) or cerebrovascular (eg the propensity to large vessel dissection) anatomy or because of genetic predisposition (eg to prothrombotic disorders).
It can identify VAD in both large and medium vessel dissections in the neck [ 4].
There were 26 reported complications, of which 13 (1.2%) were reported as serious: two false aneurysms, six hematoma >5.9 cm, 1 significant bleeding, two vessel occlusion, and two vessel dissections.
