Secondary aortoduodenal fistula identified by ultrasonography.
A 73-year-old man underwent coronary artery bypass grafting, abdominal aortic aneurysm resection, and prosthetic implantation as a single procedure in 2002. His progress was favorable until April 2008, when he was admitted to our hospital with melena. B-mode ultrasonography revealed a 5-mm defect in the abdominal aorta at the graft anastomosis, and an umbilicated lesion was seen projecting between the posterior wall of the third part of the duodenum and the abdominal aorta. A color signal was noticed at this site on color Doppler ultrasonography, leading to the diagnosis of a secondary aortoduodenal fistula (ADF). We resected the inflammatory mass comprising the graft and the third part of the duodenum, and performed prosthetic re-implantation, omentopexy, and duodenojejunostomy. We could not find any previous reports of successful identification of secondary ADF using ultrasonography. When a patient with gastrointestinal hemorrhage following reconstructive aortic surgery is encountered in the emergency department, ultrasonography may be considered to be a useful modality in the diagnosis of secondary ADF.
Department of Endoscopy and Ultrasound, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan. tat-tyan@xa2.so-net.ne.jp.
Tatsuhiro
T
Tsujimoto
Department of Endoscopy and Ultrasound, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan.
Toshiko
T
Hirai
Department of Emergency and Critical Care Medicine, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan.
Hironori
H
Kitaoka
Department of Emergency and Critical Care Medicine, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan.
Michiaki
M
Hata
Department of Emergency and Critical Care Medicine, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan.
Kenji
K
Nishio
Department of Emergency and Critical Care Medicine, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan.
Kazuo
K
Okuchi
Department of Endoscopy and Ultrasound, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan.
Namiko
N
Yamashita
Department of Endoscopy and Ultrasound, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan.
Misuzu
M
Yoshida
Department of Endoscopy and Ultrasound, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan.
Hisao
H
Fujii
Department of Endoscopy and Ultrasound, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan.
Hiroshi
H
Fukui
Abdominal aortic aneurysm; Aortoduodenal fistula; Ultrasonography