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Colorectal Cancer Liver Metastases: Biopsy of the Ablation Zone and Margins Can Be Used to Predict Oncologic Outcome.
Sotirchos, Vlasios S; Petrovic, Lydia M; Gönen, Mithat; Klimstra, David S; Do, Richard K G; Petre, Elena N; Garcia, Alessandra R; Barlas, Afsar; Erinjeri, Joseph P; Brown, Karen T; Covey, Anne M; Alago, William; Brody, Lynn A; DeMatteo, Ronald P; Kemeny, Nancy E; Solomon, Stephen B; Manova-Todorova, Katia O; Sofocleous, Constantinos T.
Affiliation
  • Sotirchos VS; From the Section of Interventional Radiology, Department of Radiology (V.S.S., E.N.P., J.P.E., K.T.B., A.M.C., W.A., L.A.B., S.B.S., C.T.S.), Departments of Epidemiology and Biostatistics (M.G.), Pathology (D.S.K.), Radiology (R.K.G.D., A.R.G.), Molecular Cytology (A.B., K.O.M.), Surgery (R.P.D.), a
  • Petrovic LM; From the Section of Interventional Radiology, Department of Radiology (V.S.S., E.N.P., J.P.E., K.T.B., A.M.C., W.A., L.A.B., S.B.S., C.T.S.), Departments of Epidemiology and Biostatistics (M.G.), Pathology (D.S.K.), Radiology (R.K.G.D., A.R.G.), Molecular Cytology (A.B., K.O.M.), Surgery (R.P.D.), a
  • Gönen M; From the Section of Interventional Radiology, Department of Radiology (V.S.S., E.N.P., J.P.E., K.T.B., A.M.C., W.A., L.A.B., S.B.S., C.T.S.), Departments of Epidemiology and Biostatistics (M.G.), Pathology (D.S.K.), Radiology (R.K.G.D., A.R.G.), Molecular Cytology (A.B., K.O.M.), Surgery (R.P.D.), a
  • Klimstra DS; From the Section of Interventional Radiology, Department of Radiology (V.S.S., E.N.P., J.P.E., K.T.B., A.M.C., W.A., L.A.B., S.B.S., C.T.S.), Departments of Epidemiology and Biostatistics (M.G.), Pathology (D.S.K.), Radiology (R.K.G.D., A.R.G.), Molecular Cytology (A.B., K.O.M.), Surgery (R.P.D.), a
  • Do RK; From the Section of Interventional Radiology, Department of Radiology (V.S.S., E.N.P., J.P.E., K.T.B., A.M.C., W.A., L.A.B., S.B.S., C.T.S.), Departments of Epidemiology and Biostatistics (M.G.), Pathology (D.S.K.), Radiology (R.K.G.D., A.R.G.), Molecular Cytology (A.B., K.O.M.), Surgery (R.P.D.), a
  • Petre EN; From the Section of Interventional Radiology, Department of Radiology (V.S.S., E.N.P., J.P.E., K.T.B., A.M.C., W.A., L.A.B., S.B.S., C.T.S.), Departments of Epidemiology and Biostatistics (M.G.), Pathology (D.S.K.), Radiology (R.K.G.D., A.R.G.), Molecular Cytology (A.B., K.O.M.), Surgery (R.P.D.), a
  • Garcia AR; From the Section of Interventional Radiology, Department of Radiology (V.S.S., E.N.P., J.P.E., K.T.B., A.M.C., W.A., L.A.B., S.B.S., C.T.S.), Departments of Epidemiology and Biostatistics (M.G.), Pathology (D.S.K.), Radiology (R.K.G.D., A.R.G.), Molecular Cytology (A.B., K.O.M.), Surgery (R.P.D.), a
  • Barlas A; From the Section of Interventional Radiology, Department of Radiology (V.S.S., E.N.P., J.P.E., K.T.B., A.M.C., W.A., L.A.B., S.B.S., C.T.S.), Departments of Epidemiology and Biostatistics (M.G.), Pathology (D.S.K.), Radiology (R.K.G.D., A.R.G.), Molecular Cytology (A.B., K.O.M.), Surgery (R.P.D.), a
  • Erinjeri JP; From the Section of Interventional Radiology, Department of Radiology (V.S.S., E.N.P., J.P.E., K.T.B., A.M.C., W.A., L.A.B., S.B.S., C.T.S.), Departments of Epidemiology and Biostatistics (M.G.), Pathology (D.S.K.), Radiology (R.K.G.D., A.R.G.), Molecular Cytology (A.B., K.O.M.), Surgery (R.P.D.), a
  • Brown KT; From the Section of Interventional Radiology, Department of Radiology (V.S.S., E.N.P., J.P.E., K.T.B., A.M.C., W.A., L.A.B., S.B.S., C.T.S.), Departments of Epidemiology and Biostatistics (M.G.), Pathology (D.S.K.), Radiology (R.K.G.D., A.R.G.), Molecular Cytology (A.B., K.O.M.), Surgery (R.P.D.), a
  • Covey AM; From the Section of Interventional Radiology, Department of Radiology (V.S.S., E.N.P., J.P.E., K.T.B., A.M.C., W.A., L.A.B., S.B.S., C.T.S.), Departments of Epidemiology and Biostatistics (M.G.), Pathology (D.S.K.), Radiology (R.K.G.D., A.R.G.), Molecular Cytology (A.B., K.O.M.), Surgery (R.P.D.), a
  • Alago W; From the Section of Interventional Radiology, Department of Radiology (V.S.S., E.N.P., J.P.E., K.T.B., A.M.C., W.A., L.A.B., S.B.S., C.T.S.), Departments of Epidemiology and Biostatistics (M.G.), Pathology (D.S.K.), Radiology (R.K.G.D., A.R.G.), Molecular Cytology (A.B., K.O.M.), Surgery (R.P.D.), a
  • Brody LA; From the Section of Interventional Radiology, Department of Radiology (V.S.S., E.N.P., J.P.E., K.T.B., A.M.C., W.A., L.A.B., S.B.S., C.T.S.), Departments of Epidemiology and Biostatistics (M.G.), Pathology (D.S.K.), Radiology (R.K.G.D., A.R.G.), Molecular Cytology (A.B., K.O.M.), Surgery (R.P.D.), a
  • DeMatteo RP; From the Section of Interventional Radiology, Department of Radiology (V.S.S., E.N.P., J.P.E., K.T.B., A.M.C., W.A., L.A.B., S.B.S., C.T.S.), Departments of Epidemiology and Biostatistics (M.G.), Pathology (D.S.K.), Radiology (R.K.G.D., A.R.G.), Molecular Cytology (A.B., K.O.M.), Surgery (R.P.D.), a
  • Kemeny NE; From the Section of Interventional Radiology, Department of Radiology (V.S.S., E.N.P., J.P.E., K.T.B., A.M.C., W.A., L.A.B., S.B.S., C.T.S.), Departments of Epidemiology and Biostatistics (M.G.), Pathology (D.S.K.), Radiology (R.K.G.D., A.R.G.), Molecular Cytology (A.B., K.O.M.), Surgery (R.P.D.), a
  • Solomon SB; From the Section of Interventional Radiology, Department of Radiology (V.S.S., E.N.P., J.P.E., K.T.B., A.M.C., W.A., L.A.B., S.B.S., C.T.S.), Departments of Epidemiology and Biostatistics (M.G.), Pathology (D.S.K.), Radiology (R.K.G.D., A.R.G.), Molecular Cytology (A.B., K.O.M.), Surgery (R.P.D.), a
  • Manova-Todorova KO; From the Section of Interventional Radiology, Department of Radiology (V.S.S., E.N.P., J.P.E., K.T.B., A.M.C., W.A., L.A.B., S.B.S., C.T.S.), Departments of Epidemiology and Biostatistics (M.G.), Pathology (D.S.K.), Radiology (R.K.G.D., A.R.G.), Molecular Cytology (A.B., K.O.M.), Surgery (R.P.D.), a
  • Sofocleous CT; From the Section of Interventional Radiology, Department of Radiology (V.S.S., E.N.P., J.P.E., K.T.B., A.M.C., W.A., L.A.B., S.B.S., C.T.S.), Departments of Epidemiology and Biostatistics (M.G.), Pathology (D.S.K.), Radiology (R.K.G.D., A.R.G.), Molecular Cytology (A.B., K.O.M.), Surgery (R.P.D.), a
Radiology ; 280(3): 949-59, 2016 09.
Article in En | MEDLINE | ID: mdl-27010254
ABSTRACT
Purpose To establish the prognostic value of biopsy of the central and marginal ablation zones for time to local tumor progression (LTP) after radiofrequency (RF) ablation of colorectal cancer liver metastasis (CLM). Materials and Methods A total of 47 patients with 67 CLMs were enrolled in this prospective institutional review board-approved and HIPAA-compliant study between November 2009 and August 2012. Mean tumor size was 2.1 cm (range, 0.6-4.3 cm). Biopsy of the center and margin of the ablation zone was performed immediately after RF ablation (mean number of biopsy samples per ablation zone, 1.9) and was evaluated for the presence of viable tumor cells. Samples containing tumor cells at morphologic evaluation were further interrogated with immunohistochemistry and were classified as either positive, viable tumor (V) or negative, necrotic (N). Minimal ablation margin size was evaluated in the first postablation CT study performed 4-8 weeks after ablation. Variables were evaluated as predictors of time to LTP with the competing-risks model (uni- and multivariate analyses). Results Technical effectiveness was evident in 66 of 67 (98%) ablated lesions on the first contrast material-enhanced CT images at 4-8-week follow-up. The cumulative incidence of LTP at 12-month follow-up was 22% (95% confidence interval [CI] 12, 32). Samples from 16 (24%) of 67 ablation zones were classified as viable tumor. At univariate analysis, tumor size, minimal margin size, and biopsy results were significant in predicting LTP. When these variables were subsequently entered in a multivariate model, margin size of less than 5 mm (P < .001; hazard ratio [HR], 6.7) and positive biopsy results (P = .008; HR, 3.4) were significant. LTP within 12 months after RF ablation was noted in 3% (95% CI 0, 9) of necrotic CLMs with margins of at least 5 mm. Conclusion Biopsy proof of complete tumor ablation and minimal ablation margins of at least 5 mm are independent predictors of LTP and yield the best oncologic outcomes. (©) RSNA, 2016.
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Full text: 1 Database: MEDLINE Main subject: Colorectal Neoplasms / Tomography, X-Ray Computed / Catheter Ablation / Liver Neoplasms Type of study: Observational_studies / Prognostic_studies / Risk_factors_studies Limits: Adult / Aged / Aged80 / Female / Humans / Male / Middle aged Language: En Year: 2016 Type: Article
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Full text: 1 Database: MEDLINE Main subject: Colorectal Neoplasms / Tomography, X-Ray Computed / Catheter Ablation / Liver Neoplasms Type of study: Observational_studies / Prognostic_studies / Risk_factors_studies Limits: Adult / Aged / Aged80 / Female / Humans / Male / Middle aged Language: En Year: 2016 Type: Article