The displacement of fluids into the middle-ear cleft checked at mastoid operations.
D001826:Body Fluids; D004208:Displacement, Psychological; D004432:Ear, Middle / Q000502:physiology*; D005243:Feces; D006801:Humans; D008416:Mastoid / Q000601:surgery*
EAR, MIDDLE/physiology; MASTOID/surgery