Laparoscopic repair of transdiaphragmatic intercostal hernia following blunt trauma

Background Transdiaphragmatic intercostal hernia (TIH) is a rare clinical entity that generally occurs following trauma or surgical intervention, but it may occur spontaneously Case Report An 82-year-old Korean man presented with left-sided chest pain after falling off an agricultural vehicle. Physical examination revealed a bruised painful swelling in the left lower chest wall confirmed as hernia of the transverse colon and omentum through a defect in the diaphragm into the 7th intercostal space. Laparoscopic repair with a prosthetic mesh was successful with no sign of hernia recurrence 3 years after injury. Discussion TIH is uncommon. Depending on the associated injuries they may be repaired via the chest or abdomen and with the widespread advent of minimally invasive surgery this can be achieved laparoscopically or thoracoscopically. Small defects can be closed directly, but larger defects will require mesh coverage. Care should be taken to avoid using fixation tacks close to the central tendon and are best suited to peripheral defect repairs.

Unifying classification for transdiaphragmatic intercostal hernia and other costal margin injuries

OBJECTIVESTaxonomy of injuries involving the costal margin is poorly described and surgical management varies. These injuries, though commonly caused by trauma, may also occur spontaneously, in association with coughing or sneezing, and can be severe. Our goal was to describe our experience using sequential segmental analysis of computed tomographic (CT) scans to perform accurate assessment of injuries around the costal margin. We propose a unifying classification for transdiaphragmatic intercostal hernia and other injuries involving the costal margin. We identify the essential components and favoured techniques of surgical repair.METHODSPatients presenting with injuries to the diaphragm or to the costal margin or with chest wall herniation were included in the study. We performed sequential segmental analysis of CT scans, assessing individual injury patterns to the costal margin, diaphragm and intercostal muscles, to create 7 distinct logical categories of injuries. Management was tailored to each category, adapted to the individual case when required. Patients with simple traumatic diaphragmatic rupture were considered separately, to allow an estimation of the relative incidence of injuries to the costal margin compared to those of the diaphragm alone.RESULTSWe identified 38 patients. Of these, 19 had injuries involving the costal margin and/or intercostal muscles (group 1). Sixteen patients in group 1 underwent surgery, 2 of whom had undergone prior surgery, with 4 requiring a novel double-layer mesh technique. Nineteen patients (group 2) with diaphragmatic rupture alone had a standard repair.CONCLUSIONSSequential analysis of CT scans of the costal margin, diaphragm and intercostal muscles defines accurately the categories of injury. We propose a ‘Sheffield classification’ in order to guide the clinical team to the most appropriate surgical repair. A variety of surgical techniques may be required, including a single- or double-layer mesh reinforcement and plate and screw fixation.