Abstract
A 28-year-old woman visited our hospital complaining of a left inguinal subcutaneous mass, which had an enlarging tendency. Computed tomography (CT) and magnetic resonance imaging (MRI) showed a cystic mass (2.6×1.3×8.0 cm) located in the pelvic cavity and lt. inguinal canal, which was parallel to a round ligament. The mass was diagnosed as a Nuck's hydrocele, and was subsequently completely resected with a round ligament by totally extraperitoneal preperitoneal repair (TEPP). During the operation, an enlarged internal inguinal ring (internal inguinal hernia I-2) was found, and the hernia was repaired with a mesh. In general, spontaneous cure for an adult Nuck's hydrocele cannot be expected, so a surgical operation is necessary. In cases where Nuck's hydrocele expands for beyond the internal inguinal canal to the abdominal side, TEPP is very useful because of its wide field of view of the preperitoneal cavity and resection.
