Feb 23, 2021 · 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.

Doughnut sign. The “doughnut sign” is recognizable in the latero-lateral projection of a chest radiograph or in the lateral projection of the CT scout: it consists of a complete radiopaque …

Jan 27, 2025 · The target sign of intestinal intussusception, also known as the doughnut sign or bull's eye sign. The appearance is generated by concentric alternating echogenic and …

9. Doughnut sign: The doughnut sign occurs when mediastinal lymphadenopathy occurs behind the bronchus intermedius in the subcarinal region. Lymphadenopathy is seen as lobulated …

Jan 28, 2025 · Ultrasound signs include: target sign (also known as the doughnut sign) pseudokidney sign. crescent in a doughnut sign. absent blood flow in the intussusceptum (a …

Apr 22, 2023 · Peribronchial cuffing, also known as bronchial wall thickening or peribronchial thickening (↑), is a radiologic sign that occurs when excess fluid or mucus accumulates in the …

Because it is found to one side of the bowel it forms an echogenic crescent shape. The doughnut sign or target sign refers to the alternating echogenic (mucosa and muscularis)) and …

Oct 6, 2016 · Although it is traditionally reported in children, the “doughnut” sign is increasingly reported on computed tomography (CT) imaging to describe intussusception in adults. On CT, …

o Transverse: Target or doughnut sign, with hypoechoic rim (edematous bowel wall) surrounding hyperechoic central area (intussusceptum and associated mesenteric fat) o Longitudinal: …

Doughnut sign. A normal lateral chest radiograph is shown depicting several of the anatomic landmarks used to localize a subcarinal mass (A: 1, posterior wall of the bronchus intermedius; …