PMC

CT before tracheal intubation showing pharyngolaryngeal edema from the left submandibular gland to the epiglottis.
Note: (A) Axial image and (B) coronal image.
Abbreviation: CT, computed tomography.

Correlation of pharyngolaryngeal sensory deficits (PLSD) with post-stroke dysphagia severity (FEDSS, fiberoptic endoscopic dysphagia severity scale). The more pronounced the PLSD, the more distinct the post-stroke dysphagia severity (Spearman r = 0.452, p < 0.01).

Diagnosis of pharyngolaryngeal cyst. (A) Computed tomography of the neck showing round or round-like low density lesions with clear demarcation from surrounding tissues and uniform density in pharyngolaryngeal cyst (red arrow). (B, C) Laryngoscopic findings of round or round-like lesion with clear demarcation, a thin layer of connective tissue capsule wall, and white lacteal or limpid secretions within the cyst. (D) Histopathological examination showing cystic dilatation with white lacteal or limpid secretions and squamous epithelium.

Surgical characteristics of low-temperature radiofrequency ablation. (A) Before surgery, red arrow showed the pharyngolaryngeal cyst; (B) after surgery, cyst has been completed ablated. Low-temperature radiofrequency ablation had a clearer operative visual field, ensured a smoother and more regular surgical incision, and effected complete ablation of basilar epithelium with much lesser degree of trauma to the surrounding tissues.