Re: extension of stay on visa waiver program for medical reasons?
Kamal,
From my own personal experience in Karachi and from the care that ammi received at Aga Khan, I would opt for private care supplemented with NHS follow up in UK.
Dad's consults and care with NHS were deplorable when they were dealing with the cancer that took his life. Unfortunately, the disease was not diagnosed until stage 4 so no amount of private care would have helped.
But you have options.....take the private care in UK and then once he's cancer free follow up with NHS.