The article is devoted to the problem of emergency surgery for abdominal organs – perforated ulcer of the posterior duodenal wall (duodenum). 140 patients with perforated duodenal ulcer were treated at the N.V. Sklifosovsky Research Institute for Emergency Medicine between 2016 and 2019. Eight patients had perforation from the penetrating ulcer of the posterior duodenal wall. The average age of patients with perforation from the penetrating ulcers in the posterior duodenal wall was 62.25 years (27 to 78 years). Most of the cases were found in men – 87.5%. 7 patients had surgery at the Institute, one was transferred from another medical institution where he underwent surgery. Four patients were discharged with a favorable outcome, and four died. Two of the deceased patients had perforation associated with penetrating duodenal ulcer that was diagnosed during laparotomy; in two other cases, perforation associated with the penetrating ulcer was detected only during autopsy. A feature of perforated gastroduodenal ulcers when they are localized on the posterior wall of the duodenum is poor clinical manifestation, which is associated with the entry of duodenal contents into a limited retroperitoneal space, leading to a significant inflammatory process of retroperitoneal tissue. Complex use of X-ray examination, oesophagogastroduodenoscopy, and CT allows to correctly assess and timely diagnose perforation associated with the penetrating ulcer of the posterior wall of the duodenum into the retroperitoneal space.

Оn the example of clinical observation, the possibilities of radiographic methods (x-ray, ultrasound, and CT) in the diagnosis and prognosis of the course of the post-traumatic period are shown.