French to English Medical Medical (general)

Le cliché radiologique de face réalisé ce jour montre essentiellement une ascension de la coupole diaphragmatique droite d'allure séquellaire.

The frontal chest x-ray performed today mainly shows elevation of the right hemidiaphragm

I am struggling to find a neat way of expressing "d'allure séquellaire" here.

I know that the patient has had previous surgery in the right apical region and the text talks about "antécedents chirurgicaux à droite", so I am thinking something like "from previous surgery" would work. I'm not sure though...