Primary retroperitoneal lymphocele in a pregnant woman: the first report.

In a 32-year-old pregnant woman, routine ultrasonography revealed right hydronephrosis and a huge retroperitoneal mass (20 x 7 cm) containing a fluid collection. Percutaneous drainage of the mass was performed and 2 L of clear, yellowish fluid was collected. Four months following the delivery, a recurrent retroperitoneal lymphocele was identified. Six months after the delivery, laparoscopic marsupialization was performed through a 10-mm umbilical camera port and two 5-mm ports on the right side of the abdomen. A posterior peritoneal window was established by creating a wide opening in the anterior wall of the lymphocele. Subsequent ultrasonography did not indicate a recurrence of the lymphocele or right hydronephrosis over a follow-up period of 8 months.