In this study, preoperative physical examination findings, peroperative findings and data, and postoperative follow-up results of newborns who underwent inguinal hernia repair with PIRS ("Percutaneous Internal Ring Suturing") method will be evaluated retrospectively.

Congenital inguinal hernia is one of the most common surgical pathologies of childhood. Its treatment includes high ligation of the patent processus vaginalis by open or laparoscopic method. There are many described minimally invasive/laparoscopic repair techniques of inguinal hernias in children. One of them is "percutaneous internal ring suturing" or "Percutaneous Inner Ring Suturing".

There are many studies on the PIRS method in children. Two of these studies are prospective clinical studies published previously by the investigators of this study: in the first, the PIRS method was shown to be a safe and effective method for minimally invasive repair of inguinal hernia in children, and in the second, the use of subparalytic laryngeal masks in anesthesia of patients who underwent PIRS was shown to be sufficient for airway protection and anesthesia management in children undergoing laparoscopy.

Although there are many studies on the repair of inguinal hernia in children with PIRS or other minimally invasive methods in the last decade, there are very limited studies on the use of these methods in newborns, a special group of childhood patients. In the literature, there is no study examining only newborn patients. In this context, the study will be a first in the literature.

Inclusion Criteria:

1. Having undergone PIRS surgery at the study institute between October 1, 2015 and January 1, 2023
2. Age between 0-28 days

Exclusion Criteria:

1. Age > 28 days
2. Having had surgery with open surgery
3. Having another surgical procedure performed in the same session

Neonates <28 days of age undergoing PIRS