The postero-superior quadrant.
D002781:Cholesteatoma / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D004427:Ear Diseases / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D004432:Ear, Middle / Q000473:pathology / Q000601:surgery; D006801:Humans; D019736:Prostheses and Implants; D014432:Tympanic Membrane / Q000473:pathology*; D014433:Tympanoplasty