Education and imaging. Hepatobiliary and pancreatic: traumatic pseudoaneurysm of the hepatic artery

Gastrointestinal bleeding due to pseudoaneurysms in children

Radiological embolization is the treatment of choice in adults with visceral artery pseudoaneurysm (PSA) and gastrointestinal bleeding, but pediatric data is scanty. We analyzed the etiology, clinical presentation, and outcome of radiological intervention in children with PSA of celiac (CA) or superior mesenteric artery (SMA) branches. Electronic records of children with PSA of CA or SMA branches were reviewed and data on clinical and laboratory profile, radiological intervention, and outcome was recorded. Eleven children with PSA (5 boys, 11 [7-17] years) were studied. Etiology was liver abscess (n 4), abdominal trauma (n 3), pancreatitis (n 3), and indeterminate in 1 case. Ten (91%) patients were symptomatic: abdominal pain (10, 91%), hematemesis/melena (9, 81%), and Quincke's triad (1, 9%). One child with pancreatic pseudocyst was diagnosed incidentally on imaging. Doppler ultrasound identified PSA only in 3 cases, while computed tomography angiography (CTA) picked all cases. Children with liver abscess, trauma, and unknown etiology had PSA from CA (right hepatic artery 7, left hepatic artery 1). Of the 3 pancreatitis cases, 2 had PSA from SMA (inferior pancreatico-duodenal artery and ileal branch) and 1 from CA (left gastric artery). Radiological embolization was done in 9 (81%) cases (coil 6, glue 2, both 1), without any complications or failure. One case resolved spontaneously and 1 died pre-intervention. Nine intervened cases were asymptomatic in follow-up [6 (1-24) months].Conclusion: Liver abscess, trauma, and pancreatitis are causes of PSA of CA and SMA branches in children. A majority present with gastrointestinal bleeding and are identified on CTA. Radiological embolization was safe with 100% success. What is Known: • Pseudoaneurysm of visceral artery is an uncommon cause of gastrointestinal bleeding. • Endoluminal intervention is an established and efficacious treatment modality in adults and preferred over surgery. What is New: • Liver abscess, abdominal trauma and pancreatitis are common causes of celiac artery and superior mesenteric artery branch pseudoaneurysm in children and computed tomography angiography has high sensitivity in identifying these pseudoaneurysms. • Minimally invasive radiological angio-embolization, in the hands of trained radiologists, is a safe and successful modality of treatment in children.