Acclaimed Chicago chef Grant Achatz has reached an undisclosed settlement with a dental clinic in a missed-cancer diagnosis case. The case involved a cancerous growth in a place where it could have ended the career of Achatz – it was on his tongue. Achatz years ago noticed a small, white dot on the left side of his tongue about the size of a bread crumb, according to an account in The Chicago Sun-Times. A dentist thought it was merely a stress-related irritation from gnawing his tongue and prescribed a mouth guard. A biopsy was performed that came back negative.