Hi thanks for your question.
You had traumatic esophageal stricture, which was further stenosed leading to choking
. Dilatation of the stenosis is the right way of treatment. Dilatation is always done step by step first staring with small number dilator and then slowly increasing size of dilator. Slight amount of edema can occur after dilation which give the feeling of more stenosis but it will settle with time and with further dilation this feeling will go and hopefully you will be able take food comfortably.
Hope this answers your question.