Spontaneous Intramural Duodenal Hematoma: Pancreatitis, Obstructive Jaundice, and Upper Intestinal Obstruction

Nontraumatic intramural duodenal hematoma can cause upper gastrointestinal tract obstruction, upper gastrointestinal hemorrhage, jaundice, and pancreatitis and may be present in patients with normal coagulation. However the pathogenesis of the condition and its relationship with acute pancreatitis remain unknown. We present a case of spontaneous intramural duodenal hematoma and a case of successful nonoperative treatments.


Ethical Consideration
This retrospective case report was approved by the Ethics Committee for Human Research based on the declaration of Helsinki and the ICH good clinical practice guidelines. Clinical data were obtained by reviewing medical records.

Case Report
A 27-year-old Thai male was admitted to the hospital after experiencing one day of epigastric pain, hematemesis, and jaundice without evidence of previous trauma. His symptoms also resulted in upper gastrointestinal obstruction, which caused 2 kilograms of weight loss (70 to 68 kilograms) in one week. He had no history of warfarin or aspirin therapy. However, he was a heavy drinker consuming 500 mL of liquor per day.
A physical examination revealed jaundice and mild tenderness over the epigastric region. Blood tests showed a hemoglobin level of 12.3 g/dL, white blood cell count of 13,960/ L, platelet count of 669,000/ L, prothrombin time of 12.10 sec, INR of 1.14, activated partial thromboplastin time of 31.40 sec, lipase level of 477 U/L, and total bilirubin level of 12.1 mg/d.
Contrast-enhanced abdominal computed tomography revealed hematoma in the whole duodenum with duodenitis. Localized acute pancreatitis was found in the uncinate process and head of the pancreas with a small pancreatic pseudocyst causing distal common bile duct obstruction with biliary dilatation (Figures 1(a)-1(b)).  Esophagogastroduodenoscopy showed bulging, inflammation, and swelling of mucosa at the posterolateral wall of second to third part of the duodenum with partial obstruction of the duodenal lumen ( Figure 2). Endoscopic ultrasonography showed a heteroechoic mass at the posterolateral wall of the duodenum (Figure 3).
The patient was diagnosed with acute pancreatitis, intramural duodenal hematoma, acute cholangitis, and upper gastrointestinal obstruction. He was conservatively treated with intravenous antibiotics and fluid replacement therapy, restricting the oral intake of food/liquids. 17 days after admission the patient was able to consume a low residual diet orally without abdominal discomfort. His jaundice had also improved. He discontinued intravenous antibiotics after 10 days of therapy. He was discharged on the 21st day after admission. Three months after admission follow-up esophagogastroduodenoscopy showed normal duodenal mucosa with a mild narrowing of the lumen at the second part of the duodenum. Magnetic resonance cholangiopancreatography revealed a distal common bile duct obstruction and revealed that the intramural duodenal hematoma, pancreatitis of head, and uncinate process had resolved (Figures 4(a)-4(b)).
CT scans, gastroduodenoscopy, and endoscopic ultrasonography revealed evidence of duodenal hematoma, pancreatitis, biliary obstruction, and a gallstone.
He was successfully treated using conservative methods. Although there has been a case report of endoscopic decompression for intramural duodenal hematoma with gastric outlet obstruction to relieve the symptoms of the obstruction [15], this procedure requires further investigation.
In this case, the disease may have developed from either alcoholic pancreatitis due to patient's history of heavy drinking or biliary pancreatitis, as there was evidence of a gallstone. It is also possible that spontaneous intramural duodenal hematoma of unknown origin caused the acute pancreatitis. But pancreatitis is likely to be the leading cause in this case, based on the patient's history of alcohol consumption and evidence of a gallstone without any coagulation abnormalities. However, it is difficult to explain the true pathophysiology.
In conclusion, the patient who presented with spontaneous intramural duodenal hematoma with acute pancreatitis with clinical jaundice, upper gastrointestinal obstruction, and upper gastrointestinal hemorrhage was able to be treated conservatively. However, the relationship between the disease and pathophysiology remains unclear.