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.
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.
Authors: M Hayashi; O Matsui; K Ueda; Y Kawamori; M Kadoya; J Yoshikawa; T Gabata; T Takashima; A Nonomura; Y Nakanuma Journal: AJR Am J Roentgenol Date: 1999-04 Impact factor: 3.959
Authors: J M Llovet; R Vilana; C Brú; L Bianchi; J M Salmeron; L Boix; S Ganau; M Sala; M Pagès; C Ayuso; M Solé; J Rodés; J Bruix Journal: Hepatology Date: 2001-05 Impact factor: 17.425
Authors: O Matsui; M Kadoya; J Yoshikawa; T Gabata; K Arai; H Demachi; S Miyayama; T Takashima; M Unoura; K Kogayashi Journal: Radiology Date: 1993-07 Impact factor: 11.105
Authors: Hyo-Jin Kang; Young Il Kim; Hyo-Cheol Kim; Hwan Jun Jae; Saebeom Hur; Jin Wook Chung Journal: Korean J Radiol Date: 2015-08-21 Impact factor: 3.500