Previously Undiagnosed Spinal and Bulbar Muscular Atrophy as a Cause of Airway Obstruction after Robot-Assisted Laparoscopic Prostatectomy.

Vocal cord paralysis combined with postoperative laryngeal edema, the cause of which was presumed to be SBMA, likely caused airway obstruction after RALP. As neuromuscular symptoms progress gradually in patients with SBMA, muscle relaxants should be used carefully, even if patients with SBMA present no immobility of their extremities.