Successful coil embolization of a ruptured aneurysm of the arc of Riolan artery

Hirotatsu Sato, MD, PhD; Tetsuo Sonomura, MD, PhD; Hironobu Ihira, MD; Akira Ikoma, MD, PhD; Nozomu Shima, MD; Tomoya Fukui, MD; Kodai Fukuda, MD; Shota Ueda, MD; Ryuta Okuhira, MD; Nobuyuki Higashino, MD; Atsufumi Kamisako, MD; Ryota Tanaka, MD; Takao Koyama, MD; Hiroki Minamiguchi, MD, PhD

Radiology Case Reports (Feb 2023)

Successful coil embolization of a ruptured aneurysm of the arc of Riolan artery

Hirotatsu Sato, MD, PhD,
Tetsuo Sonomura, MD, PhD,
Hironobu Ihira, MD,
Akira Ikoma, MD, PhD,
Nozomu Shima, MD,
Tomoya Fukui, MD,
Kodai Fukuda, MD,
Shota Ueda, MD,
Ryuta Okuhira, MD,
Nobuyuki Higashino, MD,
Atsufumi Kamisako, MD,
Ryota Tanaka, MD,
Takao Koyama, MD,
Hiroki Minamiguchi, MD, PhD

Affiliations

Hirotatsu Sato, MD, PhD: The Department of Radiology, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan; Corresponding author.
Tetsuo Sonomura, MD, PhD: The Department of Radiology, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
Hironobu Ihira, MD: The Department of Radiology, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
Akira Ikoma, MD, PhD: The Department of Radiology, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
Nozomu Shima, MD: The Department of Emergency and Critical Care Medicine, Wakayama Medical University, Wakayama City, Wakayama, Japan
Tomoya Fukui, MD: The Department of Emergency and Critical Care Medicine, Wakayama Medical University, Wakayama City, Wakayama, Japan
Kodai Fukuda, MD: The Department of Radiology, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
Shota Ueda, MD: The Department of Radiology, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
Ryuta Okuhira, MD: The Department of Radiology, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
Nobuyuki Higashino, MD: The Department of Radiology, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
Atsufumi Kamisako, MD: The Department of Radiology, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
Ryota Tanaka, MD: The Department of Radiology, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
Takao Koyama, MD: The Department of Radiology, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
Hiroki Minamiguchi, MD, PhD: The Department of Radiology, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan

Journal volume & issue: Vol. 18, no. 2
pp. 486 – 490

Abstract

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The arc of Riolan (AOR) is an anastomosis between the middle and left colic arteries. Aneurysms of the AOR are very rare visceral artery aneurysms. A 44-year-old man presented with abdominal pain and loss of consciousness. Computed tomography and angiography showed hemorrhagic ascites around the liver and spleen. An irregularly dilated artery was visible within a hematoma in the upper left region of the abdomen, consistent with a ruptured pseudoaneurysm of the AOR. Transcatheter arterial embolization was performed with microcoils. The patient's abdominal pain disappeared after embolization, and no symptoms of intestinal ischemia were observed. To our knowledge, this is the first case of an AOR aneurysm with AOR dilation due to dissection of the celiac artery that was successfully treated by coil embolization.

Published in Radiology Case Reports

ISSN: 1930-0433 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Medicine: Medicine (General): Medical physics. Medical radiology. Nuclear medicine
Website: https://www.sciencedirect.com/journal/radiology-case-reports

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