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Related Experiment Videos

Laryngeal tuberculosis: CT findings

W K Moon1, M H Han, K H Chang

  • 1Department of Radiology, Seoul National University College of Medicine, South Korea.

AJR. American Journal of Roentgenology
|February 1, 1996
PubMed
Summary
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Computed tomography (CT) scans reveal bilateral, diffuse laryngeal lesions in patients with laryngeal tuberculosis (TB). These findings, including vocal cord and aryepiglottic fold thickening, suggest TB, especially when pulmonary TB is also present.

Area of Science:

  • Radiology
  • Infectious Diseases
  • Otolaryngology

Background:

  • Laryngeal tuberculosis (TB) is a rare manifestation of Mycobacterium tuberculosis infection.
  • Diagnosis can be challenging due to nonspecific symptoms and varied presentations.
  • Imaging plays a crucial role in identifying characteristic patterns.

Purpose of the Study:

  • To evaluate the computed tomography (CT) findings in patients diagnosed with laryngeal tuberculosis (TB).
  • To correlate CT findings with laryngoscopic and radiographic examinations.
  • To determine the utility of CT in diagnosing laryngeal TB.

Main Methods:

  • Retrospective review of CT scans, laryngoscopic examinations, and chest radiographs.
  • Inclusion of 12 patients with confirmed laryngeal TB (histologically or bacteriologically).

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  • Analysis of laryngeal structures, including vocal cords, epiglottis, and surrounding tissues.

    • Main Results:

    • All patients exhibited bilateral diffuse thickening of vocal cords and aryepiglottic folds.
    • Epiglottic thickening was noted in seven patients; focal masses in four.
    • No cartilage destruction was observed; subglottic extension was rare.
    • All patients had radiographic evidence of active pulmonary TB; five had enlarged cervical lymph nodes.

    Conclusions:

    • CT findings in laryngeal TB are not specific but often show bilateral, diffuse laryngeal lesions.
    • The possibility of laryngeal TB should be considered in patients with pulmonary TB presenting with such laryngeal abnormalities.
    • Absence of laryngeal architecture destruction on CT is a key feature.