Dr. Sandra Lee / TLC Discovery+Catherine’s arm lump has grown so big that it’s nearly up to her armpit. Discovery TLC ThisIsZit 200526 May 20, 2026May 20, 2026 - by hippo010203 - Leave a Comment S8 E10: My Octopus Lipoma. Catherine’s arm lump has grown so big that it’s nearly up to her armpit. Reality, Medical Marvels.