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01.12.2007 | Original Research

Iodized oil accumulation in the hypovascular tumor portion of early-stage hepatocellular carcinoma after ultraselective transcatheter arterial chemoembolization

verfasst von: Shiro Miyayama, Osamu Matsui, Masashi Yamashiro, Yasuji Ryu, Harumi Takata, Taro Takeda, Hiroyuki Aburano, Noriaki Shigenari

Erschienen in: Hepatology International | Ausgabe 4/2007

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Abstract

Purpose

We evaluated iodized oil accumulation in the hypovascular portion of early-stage hepatocellular carcinoma (HCC) after ultraselective transcatheter arterial embolization (TACE).

Materials and methods

Forty-seven HCC lesions with hypovascular portions were treated by TACE at the distal level of the sub-subsegmental artery of the liver. Portal blood in the hypovascular portion was classed in two grades by computed tomography (CT) during arterial portography: decreased and preserved. Iodized oil accumulation was classed into three grades on CT obtained 1 week after TACE: (1) dense accumulation in the almost entire tumor, including the hypovascular portion (grade 2); (2) dense accumulation in hypervascular portions but sparse accumulation in hypovascular portion (grade 1); and (3) sparse accumulation or no accumulation (grade 0). Findings on serial follow-up CT images were also analyzed.

Results

Portal blood in the hypovascular portion was decreased in 32 lesions, and preserved in 15 lesions. On CT 1 week after TACE, 32 tumors (68.1%)—23 with decreased portal blood and 9 with preserved portal blood—were classed as grade 2. Twelve tumors (25.5%), six with decreased portal blood and six with preserved portal blood, were classed as grade 1. Three tumors (6.4%) with decreased portal blood were classed into grade 0. In total, 25 tumors (53.2%), 22 in grade 2 and 3 in grade 1, were well controlled by ultraselective TACE during the mean follow-up of 15.8 months.

Conclusions

Iodized oil accumulation and retention in the hypovascular portion of early-stage HCC was frequently observed after ultraselective TACE, mainly in the hypovascular portion with decreased portal blood.

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Titel: Iodized oil accumulation in the hypovascular tumor portion of early-stage hepatocellular carcinoma after ultraselective transcatheter arterial chemoembolization
verfasst von: Shiro Miyayama
Osamu Matsui
Masashi Yamashiro
Yasuji Ryu
Harumi Takata
Taro Takeda
Hiroyuki Aburano
Noriaki Shigenari
Publikationsdatum: 01.12.2007
Verlag: Springer-Verlag
Erschienen in: Hepatology International / Ausgabe 4/2007
Print ISSN: 1936-0533
Elektronische ISSN: 1936-0541
DOI: https://doi.org/10.1007/s12072-007-9030-5

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Iodized oil accumulation in the hypovascular tumor portion of early-stage hepatocellular carcinoma after ultraselective transcatheter arterial chemoembolization

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Purpose

Materials and methods

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Conclusions

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