Adverse Events and Time to Diagnosis of In-Office Laryngeal Biopsy Procedures


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Abstract

ObjectiveTo examine the adverse events and time to diagnosis of in-office laryngeal biopsy (IOB) procedures.Study DesignRetrospective cohort study.SettingOutpatient clinic–tertiary referral medical center.Subjects and MethodsA total of 390 IOBs were included in this study. Data on demographic characteristics, outcomes, and complications were collected. Complications were classified as severe—necessitating further intervention or admission—or mild and self-limited. Delay in diagnosis, assessed as a complication of IOB, was calculated as the time from initial examination to final diagnosis.ResultsOf 390 IOBs, 4 (1%) had complications: epistaxis (n = 2), vocal fold hematoma (n = 1), and aspiration event (n = 1). There were no reports of complications at follow-up. The sensitivity of IOB versus direct laryngoscopy biopsies was 77.8%, and the specificity was 95.1%. When the IOB showed malignancy as a final diagnosis, time to diagnosis was 10.7 days (95% CI, 8.6-12.8). When IOB pathology results changed from benign or carcinoma in situ to malignant (squamous cell carcinoma) by direct laryngoscopy, time to diagnosis was longer: 49.1 days (95% CI, 38.1-60.1) and 36.1 days (95% CI, 15.1-57.1; P < .05), respectively.ConclusionsIn this cohort, IOBs appear to be free of significant adverse events. IOBs for suspicious laryngeal lesions shorten the time to diagnosis and treatment for the majority of patients; the minority showed a small and insignificant delay.

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