A 9-year-old boy was brought in by ambulance to the Children's Hospital at Westmead following a motor vehicle accident. He was an improperly restrained, back seat passenger. He presented complaining of abdominal pain. On arrival, he was hemodynamically stable, with a Glasgow Coma Scale of 15. A seatbelt sign was identified across his lower abdomen. There was a tender fullness in the left flank, but it was difficult to decipher a clear mass or defect due to his high body mass index (>30). There was a laceration over his forehead extending to the hairline. The remainder of the examination was unremarkable.\nThe plain abdominal radiograph showed an unusual gas shadow in the left lower quadrant. A focused abdominal sonography for trauma was positive with free fluid in Morrison's pouch and the rectovesical pouch. The diagnosis of TAWH was made by abdominal computed tomography (CT), which revealed a large left lower lateral abdominal wall muscle defect, spanning 120 mm anteroposteriorly and 70 mm craniocaudally []. Small bowel, mesentery, and a small portion of the distal transverse colon were herniating through the defect, with associated fat stranding in the mesenteric root. Free fluid in the left subphrenic and hepatorenal space was identified.\nAn emergency trauma laparotomy was performed. He required resection of a segment of ischemic sigmoid bowel with primary anastomosis and repair of jejunal serosal tear and a large jejunal mesenteric defect. The large abdominal wall defect was closed in layers with PDS and a permacol patch secured to reinforce the defect.\nHis postoperative course was complicated by persistent fevers. An abdominal ultrasound revealed a 48 mL cutaneous collection in the left flank. Incision and drainage of the collection occurred on postoperative day 12. Intraoperatively, fecal material was identified in the left flank collection, and we proceeded to laparotomy. It was identified on laparotomy that necrosis of the psoas muscle had led to a posterior abdominal wall breakdown and herniation of the sigmoid colon anastomosis which subsequently leaked. The anastomosis was revised and the hernia repaired. He subsequently required incision, drainage, and washout of anterior and posterior wall collections 4 days later. His postoperative course was slow, and he was discharged home 33 days after the trauma. At a 4-month follow-up appointment, he was recovering well with no evidence of recurrence.
A 38-year-old north Indian man was brought to the emergency department of our hospital after suffering a head-on collision while driving his car. On examination, he was conscious, oriented, and, in severe pain. His vital signs were normal, except for tachycardia. There were no signs of head, chest, pelvic, or limb injury. A visible swelling was present in the umbilical and epigastric regions with overlying bruising of the skin (Figure ). On palpation, it was tender, firm, non-pulsatile, and non-reducible, but there was a slight increase in size over the next hour. The patient was triaged as a blunt trauma abdomen - a probable steering wheel injury, hemodynamically stable, with probable rectus hematoma. Expectant treatment was started and a computed tomography (CT) scan was performed. The CT scan (Figure ) revealed a supra-umbilical defect in the midline anterior abdominal wall (maximum diameter 5 cm), with herniation of bowel loops and mesentery through it, with extensive interstitial edema. There was also associated free fluid in the peritoneal cavity, and a minor splenic laceration. Anticipating strangulation of the bowel, the abdomen was explored through a midline incision. There were 2-3 loops of edematous jejunum and mesentery in the subcutaneous space, herniating from a full-thickness defect in the abdominal wall. There was also a mesenteric hematoma with loss of vitality of the corresponding jejunal segment (one foot). A resection-anastomosis was performed. No other solid organ injuries were seen. The defect was repaired with an interrupted monofilament polypropylene suture without tension. The patient's wound healed without complications and was discharged on the 6th day. He was asymptomatic, 1 month after the operation.