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[Gallbladder blunt trauma: comparison between radiologic and anatomo-surgical findings].

PURPOSE
To assess the diagnostic accuracy and the possible role of ultrasonography (US) and Computed Tomography (CT) in a small group of patients who had a blunt abdominal trauma involving the gallbladder.


MATERIAL AND METHODS
We retrospectively reviewed the US and CT findings of five patients with surgically confirmed post-traumatic gallbladder injury. The whole series consisted of 196 consecutive patients submitted to laparotomy for blunt abdominal trauma in the past 7 years. The following US and CT findings were considered at least suggestive of a possible post-traumatic gallbladder injury: pericholecystic fluid collection, ill-defined wall margin, collapsed lumen, high intraluminal density.


RESULTS
At surgery, the following findings were observed: gallbladder hematoma (1 case), acute colecystitis (1 cases), gallbladder tear (3 cases), gallbladder tear associated with post-traumatic hepatic injuries (2 cases), duodenal tear (2 cases), hemoperitoneum alone (2 cases), hemoperitoneum associated with choleperitoneum (1 case), choleperitoneum alone (1 case). The US and CT findings were pericholecystic fluid collections (4 cases), ill-defined gallbladder wall margins (3 cases), collapsed lumen with intraluminal high density (1 case) and free intraperitoneal fluid collections (4 cases). They were suggestive of a possible post-traumatic gallbladder injury in all the five patients.


CONCLUSIONS
The radiologic findings of our five patients were suggestive of a gallbladder damage but did not permit to distinguish minor from major injuries, the latter requiring surgical treatment. US proves to be a useful screening tool which can also help timing surgery in these patients. CT confirmed the US suspicions and also permitted accurate assessment of associated post-traumatic injuries to the liver and duodenum. Nevertheless, the clinical presentation was the most important factor as to the therapeutic management of these blunt abdominal trauma patients.