Читать книгу The Esophagus - Группа авторов - Страница 192

Traction diverticula occur in the mid esophagus and are most commonly caused by scarring from tuberculosis or histoplasmosis involving perihilar or subcarinal lymph nodes. Traction diverticula are true diverticula containing all layers of the esophageal wall and therefore maintain their elastic recoil. As a result, they tend to empty their contents when the esophagus collapses at fluoroscopy. Traction diverticula often have a triangular or tented appearance resulting from traction on the diverticulum by the fibrotic process in the adjacent mediastinum (Figure 6.72). Thus, it is often possible to distinguish traction diverticula from pulsion diverticula on the basis of the radiographic findings.

Figure 6.71 Giant epiphrenic diverticulum. Single‐contrast view shows a large epiphrenic diverticulum (large arrow) arising from the right lateral wall of the distal esophagus. Note the wide neck (small arrows) of the diverticulum.