Two atypical cases of esophagogastric junctional bronchogenic cyst: one case included squamous cell carcinoma

Bronchogenic cysts are congenital lesions that are derived from the lung bud and are often found in the thoracic cavity, and intra-abdominal bronchogenic cysts are really rare. They are associated with respiratory symptoms and typically require surgical resection. Herein, we describe two cases with esophagogastric junctional bronchogenic cysts. Our first case was a man in his 30s who had a submucosal tumor at esophagogastric junction, which required laparoscopic enucleation. The second case was a woman in her 50s who underwent laparoscopy-assisted proximal gastrectomy. The resected tumor was diagnosed as a bronchogenic cyst, with squamous cell carcinoma at the mucosal surface. Bronchogenic cysts are occasionally associated with complications and malignancies, and thus, preventive and diagnostic resection is recommended.