The lede:

In March, a patient at Park Nicollet Methodist Hospital in the Minneapolis suburb of St. Louis Park underwent surgery to remove a cancerous kidney. But the next day, a hospital pathologist reported no evidence of cancer in the kidney that was removed.

The surgical site had been marked, and the surgeon and operating room team did the
recommended “time out” briefing to confirm the plan before surgery. The problem: Weeks before the surgery, the side of the patient’s body with the diseased kidney was wrongly identified in the patient’s medical chart.

Officials at Park Nicollet told the patient and family about the error and apologized for it. Days later, the Minneapolis Star Tribune ran a story headlined, “Wrong kidney removed from Methodist Hospital cancer patient.” But the scoop was not planted by an aggressive trial lawyer or dug up by a resourceful investigative reporter. Rather, officials at Park Nicollet decided to go public with the mistake.

The whole shebang.