MIAMI, FL — A cosmetic surgeon was convicted of manslaughter after a lounge singer bled to death during a May 1992 operation to tighten his tummy and enlarge his penis.

Ricardo Samitier Jr., 37, known as "Dr. Lips" because he frequently performed surgery to give women fuller lips, was convicted Tuesday and faces up to 15 years in prison when sentenced July 19. Samitier lost his medical license in January. "Dr. Lips" waited 30 hours before calling paramedics.

Claudio Martell, 47, went to Samitier's clinic for surgery to trim his double chin, chubby cheeks and pot belly, and also asked for a penile enlargement as a surprise for his wife. Samitier used a controversial process in which fat removed from elsewhere in the body is used to plump up the penis.

Prosecutors argued that Samitier should not have accepted Martell as a patient because the singer had an enlarged heart and a pacemaker and took blood thinners. They said Samitier could not control Martell's bleeding, was unequipped to respond when Martell's heart stopped beating, and waited 30 hours before calling paramedics.