Doughnut sign (chest)
Citation, DOI, disclosures and article data
At the time the article was created Donovan Jacobs had no recorded disclosures.View Donovan Jacobs's current disclosures
At the time the article was last revised Andrew Murphy had no recorded disclosures.View Andrew Murphy's current disclosures
The doughnut sign can be appreciated on the lateral chest radiograph of patients with mediastinal adenopathy, most commonly seen in pediatric patients with pulmonary tuberculosis infection1.
The sign is made up of precarinal, subcarinal and retrocarinal lymph nodes which surround the radiolucent trachea and upper lobe bronchi, giving the doughnut-like appearance.
- 1. Andronikou, S., van der Merwe, D., Goussard, P., Gie, R., & Tomazos, N. 2012 Sep 10. Usefulness of lateral radiographs for detecting tuberculous lymphadenopathy in children – confirmation using sagittal CT reconstruction with multiplanar cross-referencing. South African Journal of Radiology. [Online] 16:3