COLUMBIA, S.C (SCRN/WVOC) - A congressional delegation met with leaders at Dorn V.A. Medical Center on Monday, months after a scathing report noted a huge backlog in colonoscopies likely led to unnecessary deaths.

Florida Congressman Jeff Miller, who leads the House Veterans Affairs Committee, toured the facilities with U.S. House members Joe Wilson and Mick Mulvaney from South Carolina.

Miller says he's pleased Dorn has made substantial progress on the backlog, but he's upset that no one was held accountable for the mistakes.

“There has to be consequences when people make mistakes.  And especially if it's a repeated mistake that happens over and over again,” Miller says.

A report last year from the Office of Inspector General found that almost 4,000 Dorn patients were waiting for gastroenterology exams.

The delays have been associated with at least 52 cancer cases and six deaths, according to the report.

Meanwhile, the veterans hospital has shut down its operating rooms for a third time in recent months due to dust problems from the ventilation system.

Miller says he feels Dorn is acting properly in handling that situation.

We received a commitment from them in there...that basically says these operating rooms will not be open and veterans will not be exposed to any particulate matter...nor should they.”