A rare case of bronchogenic cyst in the parapharyngeal space.

Ectopic bronchogenic cyst arising from the parapharyngeal space is extremely rare and has only been reported once in a case report written in Chinese. Here, we reported one case with such a rare congenital abnormality. The patient accidentally found a mass in the parapharyngeal space when taking the head MRI scan. The CT scan showed a 2.6 × 1.9 cm low-density nodule with a well-defined border. The pathological exam confirmed its diagnosis of parapharyngeal bronchogenic cyst.