A case report of bronchogenic cyst anterior to the sacrum

—A consideration of surgical approach for presacral tumor—

Abstract

Bronchogenic cyst （BC） is a rare congenital anomaly caused by tracheobronchial system malformation during the embryonic period. Since BC has a high risk of infection and malignant transformation, complete resection is the standard treatment. Moreover, most tumors occur in the lungs or the mediastinum; however, we present a case of a BC found anterior to the sacrum. We placed the patient in a prone position and performed excision of the tumor as well as the skin overlying the lesion using a trans-sacral approach. During the 1-year postoperative follow-up, no tumor recurrence was observed. In this report, we describe the characteristics of BC and compare the transabdominal and trans-sacral approaches for resection of presacral tumors. We conclude that, when compared to the transabdominal approach, the trans-sacral approach is preferable for operations in the presacral area due to its lesser invasiveness and ability to resect even extremely large tumors.