Fig. 3: Examples for pharyngeal residue via FEES.
From: Gastrointestinal involvement in Parkinson’s disease: pathophysiology, diagnosis, and management
a Mild residue for solid food located in the valleculae. b Moderate to severe residue for solid food located in the valleculae and piriform sinus with penetration into the laryngeal vestibule. c Tablet residue located in the valleculae. d Tablet penetration.
