So, I don't know what you can do if you got a medical request because this seems positive. If you haven't got a medical request i would just tell you to withdraw but
If you got a medical request I believe it will be better if you stay silent rather than raise a web form and let them know about the previous refusal and make them check over the document again and get the PFL. Raising a web form can make them know the information that they have missed so plan before taking steps and consult the professionals. Raising webform can create issues at this time. Update about your condition to me after the reply you get from IRCC. I might help you if