[Jejunum perforation following blunt abdominal trauma--a case report].

We describe an intestinal perforation in a football player who had been hit with the knee in the abdomen. Perforation of the small bowel, following blunt abdominal trauma, is relatively rare. Its most frequent cause is a deceleration trauma, usually from a traffic accident. Clinical signs are frequently discrete and nonspecific. The most frequent symptom is abdominal pain. Lack of bowel sounds is reported in 64% oft the cases. Enteric lesions should be suspected in the presence of a corresponding history (deceleration trauma) and of other pathologies (fractures of vertebrae and/or pelvis). Sonography and computed tomography are rarely helpful. Delayed perforations have been described, necessitating prolonged observation for 48 to 72 h. after painful abdominal trauma. Repeated examinations are essential to rule out enteric perforation. Initially, less than 50% of the cases show free air, thus limiting the usefulness of thoracic and abdominal radiography. Mortality reaches 30%. This rate is adversely affected by concomitant lesions in other organs and by delay (more than 10 h.) in diagnosis. When laparotomy has been delayed and peritonitis is present, antibiotic treatment should be started immediately during surgical intervention (cephalosporin, aminoglycoside, metronidazole). Postoperative complications include septicaemia, wound infection and, rarely, enterocutaneous fistulae.