BACKGROUND: Percutaneous @entity1068 injection ( @entity8681 ) therapy currently is widely used for small @entity157 ( @entity157 ). However, only limited information is available regarding needle tract implantation after @entity8681 treatment. METHODS: Records of @entity157 @entity1 who underwent @entity8681 between March 1990 and April 1997 at the National @entity5 Center Hospital (n = 177) were reviewed to clarify the incidence, risk factors, and outcome of needle tract implantation of @entity157 . RESULTS: @entity8681 was performed for 348 @entity157 @entity1 with a median @entity5 size of 20 mm. Needle tract implantation was found in 4 @entity1 (10, 13, 15, and 46 months, respectively, after @entity8681 ). The size of the @entity8681 -treated @entity96 in these @entity1 was 20, 27, 28, and 30 mm, respectively, in greatest dimension. All @entity5 were enhanced in the early phase on dynamic computed tomography (CT), and were found to have moderate @entity5 cell differentiation on biopsied specimens. Of the four implanted @entity5 , three were resected and the remaining @entity5 was treated with extrabeam radiotherapy. At last follow-up, 2 of the 4 @entity1 had died (1 of variceal bleeding 60 months after @entity8681 and the other from @entity5 61 months after @entity8681 ) and 2 were still alive (14 and 20 months, respectively, after @entity8681 ) with no evidence of active @entity5 . CONCLUSIONS: Needle tract implantation after @entity8681 is not unusual, especially when @entity96 are > or =2 cm in greatest dimension, enhanced in the early phase on dynamic CT, and/or moderately differentiated on biopsied specimens.

Needle tract implantation of @entity157 after percutaneous XXXX injection.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity96 :: ('MESH:D008113', 'Disease') :: ['HCC tumors'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor', 'cancer', 'tumors', 'Cancer'] @entity8681 :: ('CHEBI:53231', 'Chemical') :: ['PEI'] @entity157 :: ('MESH:D006528', 'Disease') :: ['HCC', 'hepatocellular carcinoma'] @entity1068 :: ('MESH:D000431', 'Chemical') :: ['ethanol']
@entity1068 :: (MESH:D000431,Chemical) :: ['ethanol']
