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Local recurrence of hepatocellular carcinoma after segmental transarterial chemoembolization: risk estimates based on multiple prognostic factors

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Authors

Park, Seung Hyun; Cho, Yun Ku; Ahn, Yong-Sik; Park, Yoon-Ok; Kim, Jae Kyun; Chung, Jin Wook

Issue Date
2007-04-11
Publisher
The Korean Radiological Society
Citation
Korean J Radiol 2007;8(2):111-119
Keywords
AdultAgedCarcinoma, Hepatocellular/*pathology/radiography/*therapyChemoembolization, Therapeutic/*methodsChi-Square DistributionFemaleHumansIodized Oil/administration & dosageLiver Neoplasms/*pathology/radiography/*therapyMaleMiddle AgedNeoplasm Recurrence, Local/radiographyPrognosisRetrospective StudiesRisk FactorsTomography, X-Ray Computed
Abstract
OBJECTIVE: To determine the prognostic factors for local recurrence of nodular hepatocellular carcinoma after segmental transarterial chemoembolization. MATERIALS AND METHODS: Seventy-four nodular hepatocellular carcinoma tumors < or = 5 cm were retrospectively analyzed for local recurrence after segmental transarterial chemoembolization using follow-up CT images (median follow-up of 17 months, 4-77 months in range). The tumors were divided into four groups (IA, IB, IIA, and IIB) according to whether the one-month follow-up CT imaging, after segmental transarterial chemoembolization, showed homogeneous (Group I) or inhomogeneous (Group II) iodized oil accumulation, or whether the tumors were located within the liver segment (Group A) or in a segmental border zone (Group B). Comparison of tumor characteristics between Group IA and the other three groups was performed using the chi-square test. Local recurrence rates were compared among the groups using the Kaplan-Meier estimation and log rank test. RESULTS: Local tumor recurrence occurred in 19 hepatocellular carcinoma tumors (25.7%). There were: 28, 18, 17, and 11 tumors in Group IA, IB, IIA, and IIB, respectively. One of 28 (3.6%) tumors in Group IA, and 18 of 46 (39.1%) tumors in the other three groups showed local recurrence. Comparisons between Group IA and the other three groups showed that the tumor characteristics were similar. One-, two-, and three-year estimated local recurrence rates in Group IA were 0%, 11.1%, and 11.1%, respectively. The difference between Group IA and the other three groups was statistically significant (p = 0.000). CONCLUSION: An acceptably low rate of local recurrence was observed for small or intermediate nodular tumors located within the liver segment with homogeneous iodized oil accumulation.
ISSN
1229-6929 (Print)
Language
English
URI
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=17420628

https://hdl.handle.net/10371/10341
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