Stéphane Bardet1, Renaud Ciappuccini, Elske Quak, Jean-Pierre Rame, David Blanchard, Dominique de Raucourt, Emmanuel Babin, Jean-Jacques Michels, Dominique Vaur, Natacha Heutte. 1. Department of Nuclear Medicine and Thyroid Unit (S.B., R.C., E.Q.), and Departments of Head and Neck Surgery (J.-P.R., D.B., D.d.R.), and Pathology (J.-J.M.), Biology (D.V.), Centre François Baclesse, 14076 Caen, France; Department of Head and Neck Surgery (E.B.), University Hospital, Caen 14000, France; Unité 1086 (N.H.), INSERM-University of Caen-Basse Normandie, "Cancers and Préventions" Program, University of Caen-Basse Normandie, 14032 Caen, France.
Abstract
CONTEXT: The impact of microscopic nodal involvement on the risk of persistent/recurrent disease (PRD) remains controversial in patients with papillary thyroid carcinoma (PTC). OBJECTIVE: The goal of the study was to assess the risk of PRD and the 4-year outcome in PTC patients according to their initial nodal status [pNx, pN0, pN1 microscopic (cN0/pN1) or pN1 macroscopic (cN1/pN1)]. DESIGN: We conducted a retrospective cohort study. PATIENTS: The study included 305 consecutive PTC patients referred for radioiodine ablation from 2006 to 2011. MAIN OUTCOME MEASURE: We evaluated the risk of structural PRD and the disease status at the last follow-up. At ablation, persistent disease was consistently assessed by using post-radioiodine ablation scintigraphy combining total body scan and neck and thorax single-photon computed tomography-computed tomography (SPECT-CT) acquisition. RESULTS: Of 305 patients, 128 (42%) were pNx, 84 (28%) pN0, 44 (14%) pN1 microscopic, and 49 (16%) pN1 macroscopic. The 4-year cumulative risk of PRD was higher in pN1 macroscopic than in pN1 microscopic patients (49% vs 24%, P = .03), and higher in pN1 microscopic than in pN0 (12%, P = .01) or pNx patients (6%, P < .001). On multivariate analysis, tumor size of 20 mm or greater [relative risk (RR) 3.4; P = .0001], extrathyroid extension (RR 2.6; P < .003), pN1 macroscopic (RR 4.5; P < .0001), and pN1 microscopic (RR 2.5; P < .02) were independent risk factors for PRD. At the last visit, the proportion of patients with no evidence of disease decreased from pNx (98%), pN0 (93%), and pN1 microscopic (89%) to pN1 macroscopic patients (70%) (P < .0001, Cochran-Armitage trend test). Extrathyroid extension (odds ratio 9.7; P < .0001) and N1 macroscopic (OR 4.9; P < .001) independently predicted persistent disease at the last visit, but N1 microscopic did not. CONCLUSIONS: PATIENTS with microscopic lymph node involvement present an intermediate outcome between that observed in pN0-pNx patients and pN1 macroscopic patients. These data may justify modifications to the risk recurrence staging systems.
CONTEXT: The impact of microscopic nodal involvement on the risk of persistent/recurrent disease (PRD) remains controversial in patients with papillary thyroid carcinoma (PTC). OBJECTIVE: The goal of the study was to assess the risk of PRD and the 4-year outcome in PTC patients according to their initial nodal status [pNx, pN0, pN1 microscopic (cN0/pN1) or pN1 macroscopic (cN1/pN1)]. DESIGN: We conducted a retrospective cohort study. PATIENTS: The study included 305 consecutive PTC patients referred for radioiodine ablation from 2006 to 2011. MAIN OUTCOME MEASURE: We evaluated the risk of structural PRD and the disease status at the last follow-up. At ablation, persistent disease was consistently assessed by using post-radioiodine ablation scintigraphy combining total body scan and neck and thorax single-photon computed tomography-computed tomography (SPECT-CT) acquisition. RESULTS: Of 305 patients, 128 (42%) were pNx, 84 (28%) pN0, 44 (14%) pN1 microscopic, and 49 (16%) pN1 macroscopic. The 4-year cumulative risk of PRD was higher in pN1 macroscopic than in pN1 microscopic patients (49% vs 24%, P = .03), and higher in pN1 microscopic than in pN0 (12%, P = .01) or pNx patients (6%, P < .001). On multivariate analysis, tumor size of 20 mm or greater [relative risk (RR) 3.4; P = .0001], extrathyroid extension (RR 2.6; P < .003), pN1 macroscopic (RR 4.5; P < .0001), and pN1 microscopic (RR 2.5; P < .02) were independent risk factors for PRD. At the last visit, the proportion of patients with no evidence of disease decreased from pNx (98%), pN0 (93%), and pN1 microscopic (89%) to pN1 macroscopic patients (70%) (P < .0001, Cochran-Armitage trend test). Extrathyroid extension (odds ratio 9.7; P < .0001) and N1 macroscopic (OR 4.9; P < .001) independently predicted persistent disease at the last visit, but N1 microscopic did not. CONCLUSIONS:PATIENTS with microscopic lymph node involvement present an intermediate outcome between that observed in pN0-pNx patients and pN1 macroscopic patients. These data may justify modifications to the risk recurrence staging systems.
Authors: Jérôme Clerc; Frederik A Verburg; Anca M Avram; Luca Giovanella; Elif Hindié; David Taïeb Journal: Eur J Nucl Med Mol Imaging Date: 2017-06 Impact factor: 9.236
Authors: Young Ran Hong; So Hee Lee; Dong Jun Lim; Min Hee Kim; Chan Kwon Jung; Byung Joo Chae; Byung Joo Song; Ja Seong Bae Journal: World J Surg Oncol Date: 2017-04-04 Impact factor: 2.754
Authors: Jason J Xu; Eugene Yu; Caitlin McMullen; Jesse Pasternak; Jim Brierley; Richard Tsang; Han Zhang; Antoine Eskander; Lorne Rotstein; Anna M Sawka; Ralph Gilbert; Jonathan Irish; Patrick Gullane; Dale Brown; John R de Almeida; David P Goldstein Journal: J Otolaryngol Head Neck Surg Date: 2017-05-31