Laparoscopic resection of an isolated retroperitoneal enteric duplication in an infant

Retroperitoneal enteric duplication (ED) without any communications to the alimentary tract is extremely rare. We herein report a laparoscopic resection of an isolated retroperitoneal ED in an infant. The patient was a 7-month-old girl, who was found shortly after birth to have a complex, 2 cm mass in the region of the right adrenal gland. The size and imaging appearance of the mass did not change over a 7-month observation period. We performed a laparoscopic resection of the mass, and pathology revealed an isolated ED. To our knowledge, this is the first report of a laparoscopic resection of a retroperitoneal duplication cyst with the imaging findings of a polycystic lesion in an infant.