Comparative Study between Laryngoscope and Transcutaneous Laryngeal Ultrasonography in Diagnosis of Laryngeal Disorders

Document Type : Original Article

Authors

1 Department of Otorhinolaryngeology Damietta Faculty of Medicine, Al-Azhar University, Damietta, Egypt

2 Department of Otorhinolaryngeology, Faculty of Medicine, Al-Azhar University, Cairo, Egypt

3 Department of Otorhinolaryngology, Damietta Faculty of Medicine, Al-Azhar University, Damietta, Egypt

4 Department of Radiology, Damietta Faculty of Medicine, Al-Azhar University, Damietta, Egypt

Abstract

Background: Transcutaneous Laryngeal Ultrasonography [TLUSG] can be used as an alternative to fiber optic flexible laryngoscope for evaluating laryngeal function. TLUSG is a non-invasive, comfortable, and painless method, and some studies have shown it to be an effective way to assess laryngeal function.
The aim of the work: The aim of the study was to compare the diagnostic efficacy of laryngoscopy and transcutaneous laryngeal ultrasonography in identifying various laryngeal disorders.  
Patients and Methods: This study included 150 patients, with hoarseness of voice and examined by laryngoscope and TLUSG. Findings were compared, and diagnostic statistics of TLUSG were analyzed in reference to laryngoscopy.
Results: No statistically significant difference has been shown in the findings between the laryngoscopy and ultrasound in detection of the different findings; however, the laryngoscopy showed all the lesions and the ultrasound failed to show findings in 15 cases [10%] with statistically significant difference [p= 0.035]. Ultrasound had 100% specificity for detecting all lesions.
Conclusion: Transcutaneous laryngeal ultrasonography is favorable for diagnosing different laryngeal lesions and incredibly advantageous for diagnosing larger lesions. As TLUSG did not show laryngeal lesions in 15% of cases, it is recommended to perform laryngoscopy in cases with negative TLUSG.

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