[Check-up at 40 years of age].

A chest radiograph performed on a 40-year-old patient revealed a smoothly contoured right posterosuperior opacity. CT scans demonstrated a sharply defined homogeneous mass without enhancement. In a transbronchial FNA specimen, ciliated cells were found. Transesophageal ultrasound showed a hypoechoic structure, distinct from the esophagus. The patient underwent surgical excision. The postoperative finding confirmed the diagnosis of a bronchogenic cyst.