Abstract
Spigelian hernia in the pediatric population is rare. We report on a case of Spigelian hernia in an 8-month-old female infant. She was transferred to our hospital immediately after birth because of a bulging mass in the left abdomen. Her left upper abdominal wall showed a 5-cm-diameter protrusion. The diagnosis of Spigelian hernia was made on the basis of ultrasonography performed 1 week after birth, which revealed a defect of the muscle layer and herniated bowel loops under the skin. Since the probability of incarceration seemed low, elective operation was scheduled at 8 months of age. At the time of operation, a large hernia sac (5.0 × 3.5 cm in size) containing transverse colon was protruded through the Spigelian aponeurosis defect, which was located lateral to the margin of the rectus abdominis muscle. The hernia sac was excised and the Spigelian aponeurosis defect was closed by direct suturing of the external margin of the rectus abdominis muscle to the transversus abdominis muscle. She was discharged from the hospital one day after the operation. The patient is free from recurrence 1 year postoperatively.