What episode of family guy has im a tumor?

The episode of Family Guy that has the song "I'm a Tumor" is "Internal Affairs", which is the 12th episode of the eleventh season. The song is sung by Peter Griffin, who discovers he has a tumor and is afraid to tell his family. The episode revolves around Peter's struggles to come to terms with his mortality. The song "I'm a Tumor" is a comedic take on the seriousness of cancer and how it can affect a person's life.