Complex sentence: Tarek had previously had the lump examined, and said there was no issue, but after the nurse, Ryan Reade, contacted producers, Tarek had the lump checked again; doctors discovered that he had stage 2 thyroid cancer.
Split into simpler sentences: Tarek had previously had the lump examined, and he said there was no issue. After Reade contacted producers, Tarek had the lump checked again; doctors discovered that he had stage 2 thyroid cancer.