Laryngeal tubercolosis: a case report with focus on voice assessment and review of the literature.

Abstract

Laryngeal tuberculosis (LTB) is a rare manifestation of tuberculosis (TB), accounting for 1% of all TB cases. Despite its rarity it is the most frequent laryngeal granulomatous disease. We performed a systematic literature review of the last 20 years on LTB and also present a case from our hospital with special focus on voice assessment. The literature review includes a total of 308 cases, involving studies from seven countries. In all, 64.3% of patients were males. At the time of diagnosis, the mean age range was 44.6-56.5 years. Odynophagia, hoarseness and dysphonia were the most frequent presenting symptoms. In 64 cases, the initial suspicion was laryngeal cancer. Most cases involved the true vocal folds. In about a third of cases a primary LTB with normal chest radiographic was found. Although it can be treated successfully, LTB may cause significant changes in voice quality. Nowadays, LTB is rarely diagnosed and may be confused with laryngeal cancer, it should also be included in the differential diagnosis with all other chronic benign inflammatory and non-inflammatory diseases of the larynx.