Here's a doctor who thinks it's a good idea to hide his surgical mistakes in the attic. Instead, he should've kept up his malpractice insurance.
"Operation Monster" is from Harvey Comics' Chamber of Chills #5, February 1952. It's drawn by Manny Stallman, who we last saw in Pappy's #128. Heritage Auctions sold the original art in 2004 for $414.00. Here's a scan of the splash page.