Determining Invasion Depth in Superficial Pharyngeal Carcinoma by Transoral Ultrasonography

Objectives To examine the clinical usefulness of transoral ultrasonography (US) in determining the invasion depth of superficial pharyngeal carcinoma (SPC). Determining the invasion depth of SPC is crucial for transoral surgery including determining treatment strategy. This study aimed to examine th...

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Bibliographic Details
Published in:The Laryngoscope 2023-09, Vol.133 (9), p.2192-2197
Main Authors: Yumii, Kouhei, Ueda, Tsutomu, Urabe, Yuji, Fukuhara, Motomitsu, Chikuie, Nobuyuki, Taruya, Takayuki, Kono, Takashi, Hamamoto, Takao, Hattori, Minoru, Takumida, Masaya, Ishino, Takashi, Takeno, Sachio
Format: Article
Language:English
Subjects:
depth of invasion
endoscopic laryngopharyngeal surgery (ELPS)
Laryngoscopy
small linear probe
superficial pharyngeal carcinomas (SPCs)
Throat cancer
transoral ultrasonography (transoral US)
Ultrasonic imaging
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Summary:Objectives To examine the clinical usefulness of transoral ultrasonography (US) in determining the invasion depth of superficial pharyngeal carcinoma (SPC). Determining the invasion depth of SPC is crucial for transoral surgery including determining treatment strategy. This study aimed to examine the usefulness of transoral US in determining the invasion depth of SPC. Methods Forty‐six patients with 51 lesions who underwent both magnifying endoscopy with narrow‐band imaging (ME‐NBI) and transoral US were included. The primary outcomes were the sensitivity, specificity, positive (PPV), and negative predictive values (NPV) of ME‐NBI and transoral US findings for pathological tumor depth in SPCs. Results The accuracy (82.4%), sensitivity (85.2%), PPV (82.1%), and NPV (82.6%) rates of US for subepithelial propria (SEP) were higher than those of ME‐NBI and macroscopic classification, indicating that transoral US is superior to ME‐NBI in determining the invasion depth. All cases where the SEP was clearly invaded (SEP deep) could be diagnosed as SEP by transoral US. Conclusions Transoral US may be useful in determining the invasion depth of SPCs. Level of Evidence 3 Laryngoscope, 133:2192–2197, 2023 Classification for transoral US findings. (A) US‐EP. (B) US‐SEP slight. (C) US‐SEP deep. White arrow: Tumor. EP, epithelium; SEP, subepithelial propria; US, ultrasonography.
ISSN:0023-852X
1531-4995
DOI:10.1002/lary.30483