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This study focused on parotid gland tumours diagnosed as benign by fine-needle aspiration cytology and investigated the necessity of frozen section biopsy.
There were 104 cases of parotid gland tumour where fine-needle aspiration cytology was benign and frozen section biopsy was subsequently performed, between April 2006 and June 2016. In this retrospective study, the results of frozen section biopsy were analysed and compared with the final histological diagnosis.
Among the 104 cases diagnosed as benign by fine-needle aspiration cytology, 102 cases and 2 cases were diagnosed as benign and malignant, respectively, by frozen section biopsy. The final histological diagnoses showed that 98 cases were benign and 6 cases were malignant. The sensitivity and specificity values of frozen section biopsy in detecting malignant tumours were 33 per cent and 100 per cent, respectively.
The necessity of frozen section biopsy in cases with benign fine-needle aspiration cytology may be low in parotid gland surgery.
Cicatricial pemphigoid can affect all mucosa of the upper aerodigestive tract; however, hypopharyngeal involvement is less frequent.
This paper presents a 69-year-old male diagnosed as having cicatricial pemphigoid who was experiencing difficulty swallowing. Videofluorography with barium swallow demonstrated narrow flow through the medial hypopharynx, but not through the lateral hypopharynx. Direct laryngoscopy revealed that the postcricoid hypopharyngeal lumen had become narrow due to circumferential scar formation. Interestingly, detached thin membranous webs were observed beyond the circumferential scar.
This report describes important videofluorographic and direct laryngoscopic findings showing rare hypopharyngeal involvement in a case of cicatricial pemphigoid.
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