Dispersion of Coils after Parent-Artery Occlusion of Radiation-Induced Internal Carotid Artery Pseudoaneurysm
Hiro Kiyosuea,
Mika Okaharaa,
Shuichi Tanouea,
Yoshiko Sagaraa,
Shunro Matsumotoa,
Hiromu Moria,
Miori Aritab,
Tetsuo Watanabeb and
Masashi Suzukib
a Department of Radiology, Oita Medical University, Oita, Japan
b Department of Othorhinolaryngology, Oita Medical University, Oita, Japan
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FIG 1. Angiogram obtained after embolization shows complete occlusion of the ICA with coils tightly packed in all affected portions of the right ICA.
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FIG 2. Follow-up angiograms obtained 3 and 12 months after embolization of the right ICA.
A, Right common carotid angiogram obtained 3 months after embolization of the right ICA shows a small aneurysm of the right internal maxillary artery (arrow).
B, Fluoroscopic image obtained after embolization of the ECA shows that the coils are placed in the ECA from the distal portion of the internal maxillary artery to the origin of the ECA. Note the dispersion of the coils previously placed in the ICA.
C, Fluoroscopic image obtained 12 months after the first intervention shows further dispersion of the coils.
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