Pneumomediastinum and pneumothorax: a rare complication of laparoscopic total extraperitoneal inguinal hernia repair.

Increasing utilization of a laparoscopic total extraperitoneal (TEP) approach for inguinal hernia repairs has led to rare complications. We describe a rare case of subcutaneous emphysema, pneumomediastinum and pneumothorax following a laparoscopic TEP inguinal hernia repair in a 29-year-old male. Mechanisms posited include extraperitoneal carbon dioxide migration via the retroperitoneal space and dissection along the fascia transversalis and endothoracic fascia anteriorly to enter the mediastinum. Intra-operatively the patient coughed vigorously, potentially propagating the extent of extraperitoneal gas dissection and exacerbating these complications. Given the potential morbidity, it is important for surgeons and anaesthetists to recognize these complications.