Objectives/Hypothesis
The routine practices of examining submucosal lesions are not suitable for deep lesions. Therefore, we evaluated the efficacy of non‐real‐time image‐guided transnasal endoscopic fine‐needle aspiration biopsy (FNAB) in diagnosing nasopharyngeal carcinoma (NPC) with submucosal lesions.
Study Design
The effectiveness evaluation of diagnostic methods.
Methods
Fifty suspected NPC patients who failed in conventional biopsies were enrolled in this study. The efficacy, maneuverability, and safety of FNAB in diagnosing these intractable cases were evaluated.
Results
The definitive diagnostic results of these 50 patients were NPC (34/50, 68.0%), nasopharyngeal necrosis (1/50, 2.0%), nasopharyngeal mucositis (12/50, 24.0%), and other cancers (3/50, 6.0%), respectively. The results of the diagnostic efficacy of FNAB were sensitivity, 89.2%; specificity, 100.0%; positive predictive value, 100.0%; negative predictive value, 76.5%; and accuracy, 92.0%, respectively. The area under the receiver operating characteristic curves was 0.946 (95% confidence interval = 0.884–1.00, P < .001). No severe complications occurred after FNAB.
Conclusions
FNAB can improve the diagnostic efficiency of NPC occurring in the submucosal space. It can be an additional option for routine nasopharyngeal biopsy and is worthy of clinical application.
Level of Evidence
4. Laryngoscope, 2021
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