You may remember the heartwarming story of Christine Royles, a young mother from Portland, Maine, who was struggling with kidney failure and came up with a unique way to find a kidney donor.

Royles, who was diagnosed with both lupus and ANCA vasculitis, posted a heartfelt plea for a donor on the rear window of her car.

"My 2-year-old son needs a healthy mom! Looking for a type O blood kidney. I am 23 on dialysis. Call or text," Royles wrote.

Incredibly, Josh Dall-Leighton, a total stranger, saw her mobile ad and offered to help.

Hundreds of people have since donated more than $48,000 to cover the medical costs and Dall-Leighton's expenses while he's out of work following the surgery.

The Maine Medical Center, however, originally put the whole transplant on hold due to ethical questions. They eventually agreed to go through with the procedure, which is scheduled for sometime in May.

The problem is that it is against the law to sell kidneys in the United States. Even the appearance that someone is profiting from a donation could be problematic for a hospital.

Dr. Bruce Weinstein explained that a hospital is obligated to help the patient and also honor that law that says a person cannot sell his or her organs.

Weinstein said that the simple ethical solution should be that Dall-Leighton only keep the amount of money that the law says he can, $6,000, and give the rest back.

"Then, the physicians are in compliance with the law, they're helping the patient get better, everyone wins," Weinstein said.

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