"post-stenotic dilatation, e.g. bicuspid aortic valve"
Line 6:5·Only use medical adjectival hyphens where the letters at the end and start of the compound word are the same, e.g. post-transplant. In this case, don't use the hyphen: 'post-stenotic'.
There Is
suggestion
"There is a broad differential for thoracic aortic dilatation."
Line 1:4·Don't start a sentence with 'There is'.
"There are a number of mimics of thoracic aortic dilatation:"
Line 34:4·Don't start a sentence with 'There are'.