Retroperitoneal tumor finally diagnosed as a bronchogenic cyst: A case report and review of literature

Figure 1 Abdominal enhanced computed tomography image. A: Transverse section; B: Coronal section. The mass was located around the left adrenal gland. The 54 mm × 40 mm oval mass showed a clear boundary and a uniform density of 85 HU.

Figure 2 Photograph of the surgical procedure. Cyst fluid was visible during the retroperitoneal laparoscopy, showing a brown semiliquid consistency that was rich in protein.

Figure 3 Histopathological examination of the cyst wall. A: Pseudostratified ciliated columnar epithelium, cilia and smooth muscle (hematoxylin and eosin, 200 ×); B: Pseudostratified ciliated columnar epithelium, hyaline cartilage and bronchial glands (hematoxylin and eosin, 100 ×).