Peter Plant, 58, of Tamworth, who has kidney cancer, said his surgery to remove the organ on Friday was cancelled on Thursday morning. The operation has been rescheduled for 20 August, but he fears the delay could be a "death sentence".
"Resident doctors do not care that delaying operations like mine are very likely a death sentence," he said.
"I'm absolutely angry and frustrated. It is not just about me, it's about our whole family.
"You try and gear yourself up for it and then it's utter deflation."
Mr Plant said he and his family had been living in "limbo" and that he felt "utterly lost".
"Wes Streeting says he has told hospitals to carry on as normal and they're clearly not," he added.
Official figures have not yet been released on the impact of the strike. Some hospitals are reporting more than 80% of their non-urgent work is still being carried out.
Previous walkouts have led to mass cancellations of operations, appointments and treatments: more than one million were cancelled during resident doctor strikes in March 2023 and routine care was cut by half at some hospitals.


