Decompression and drainage of the endolymphatic sac.
D004322:Drainage; D007758:Ear, Inner / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D007761:Labyrinthine Fluids; D008575:Meniere Disease / Q000175:diagnosis / Q000601:surgery*; D008722:Methods; D011312:Pressure; D014717:Vertigo / Q000601:surgery