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1.
Arch. endocrinol. metab. (Online) ; 64(4): 356-361, July-Aug. 2020. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1131102

RESUMO

ABSTRACT Objective This study aims to determine the cost effectiveness of rapid frozen section (RFS) for indeterminate thyroid nodules. Materials and methods A retrospective chart review was conducted between January 2009 and June 2013 at a tertiary care institution. Main outcomes were number needed to treat, RFS efficacy, and cost-savings of avoiding second completion thyroidectomy. Cost-effectiveness was estimated using 2015 Medicare reimbursement rate. Results Out of 1,114 patients undergoing thyroid surgery, 314 had preoperative AUS/FLUS cytopathology and subsequent thyroid lobectomy with RFS. RFS identified 13 of the 32 patients with malignancy resulting in a total thyroidectomy. 19 of the 29 malignancies not detected by RFS were papillary microcarcinomas. Conclusions Completion thyroidectomy was avoided in 1 out of every 24 patients resulting in cost-savings of $ 80.04 per patient. In the era of outpatient thyroid surgery, intraoperative RFS for indeterminate thyroid nodules is cost-effective.


Assuntos
Humanos , Nódulo da Glândula Tireoide , Tireoidectomia , Estados Unidos , Neoplasias da Glândula Tireoide , Estudos Retrospectivos , Medicare , Análise Custo-Benefício
2.
Arch Endocrinol Metab ; 64(4): 356-361, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32609146

RESUMO

Objective This study aims to determine the cost effectiveness of rapid frozen section (RFS) for indeterminate thyroid nodules. Materials and methods A retrospective chart review was conducted between January 2009 and June 2013 at a tertiary care institution. Main outcomes were number needed to treat, RFS efficacy, and cost-savings of avoiding second completion thyroidectomy. Cost-effectiveness was estimated using 2015 Medicare reimbursement rate. Results Out of 1,114 patients undergoing thyroid surgery, 314 had preoperative AUS/FLUS cytopathology and subsequent thyroid lobectomy with RFS. RFS identified 13 of the 32 patients with malignancy resulting in a total thyroidectomy. 19 of the 29 malignancies not detected by RFS were papillary microcarcinomas. Conclusions Completion thyroidectomy was avoided in 1 out of every 24 patients resulting in cost-savings of $ 80.04 per patient. In the era of outpatient thyroid surgery, intraoperative RFS for indeterminate thyroid nodules is cost-effective.


Assuntos
Nódulo da Glândula Tireoide , Análise Custo-Benefício , Humanos , Medicare , Estudos Retrospectivos , Neoplasias da Glândula Tireoide , Tireoidectomia , Estados Unidos
3.
Urol Oncol ; 38(3): 83-93, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31734020

RESUMO

Survivorship care for patients with prostate cancer requires careful consideration of unique disease-specific factors, including the prolonged natural disease history, the potential for competing health risks, and the consequences of long-term androgen deprivation therapy. However, current prostate cancer survivorship research is unfortunately limited by the lack of a robust supportive evidence base, variability in the definitions and measurement of survivorship outcomes, and a heavy reliance on expert opinion. As a result, the conduct of quality prostate cancer survivorship research is of increasing importance for patients, medical providers, and other key stakeholders. This manuscript harmonizes a path forward for improving prostate cancer survivorship by defining prostate cancer survivorship and survivorship research, as well as by highlighting key research priorities and cooperative mechanisms for survivorship studies within prostate cancer, with a particular focus on men with advanced disease.


Assuntos
Pesquisa Biomédica , Continuidade da Assistência ao Paciente , Neoplasias da Próstata/terapia , Sobreviventes de Câncer , Humanos , Masculino , Neoplasias da Próstata/mortalidade , Taxa de Sobrevida
4.
J Labelled Comp Radiopharm ; 61(4): 370-379, 2018 04.
Artigo em Inglês | MEDLINE | ID: mdl-29247455

RESUMO

2-Nitroimidazole-based hypoxia imaging tracers such as 18 F-FMISO are normally imaged at late time points (several hours post-injection) due to their slow clearance from background tissues. Here, we investigated if a hydrophilic zwitterion-based ammoniomethyl-trifluoroborate derivative of 2-nitroimidazole, 18 F-AmBF3 -Bu-2NI, could have the potential to image tumor hypoxia at earlier time points. AmBF3 -Bu-2NI was prepared in 4 steps. 18 F labeling was conducted via 18 F-19 F isotope exchange reaction, and 18 F-AmBF3 -Bu-2NI was obtained in 14.8 ± 0.4% (n = 3) decay-corrected radiochemical yield with 24.5 ± 5.2 GBq/µmol specific activity and >99% radiochemical purity. Imaging and biodistribution studies in HT-29 tumor-bearing mice showed that 18 F-AmBF3 -Bu-2NI cleared quickly from blood and was excreted via the hepatobiliary and renal pathways. However, the tumor was not visualized in PET images until 3 hours post-injection due to low tumor uptake (0.54 ± 0.13 and 0.19 ± 0.04%ID/g at 1 and 3 hours post-injection, respectively). The low tumor uptake is likely due to the highly hydrophilic motif of ammoniomethyl-trifluoroborate that prevents free diffusion of 18 F-AmBF3 -Bu-2NI across the cell membrane. Our results suggest that highly hydrophilic 18 F-labeled ammoniomethyl-trifluoroborate derivatives might not be suitable for imaging intracellular targets including nitroreductase, a common tumor hypoxia imaging target.


Assuntos
Radioisótopos de Flúor/química , Neoplasias Experimentais/diagnóstico por imagem , Nitroimidazóis/química , Tomografia por Emissão de Pósitrons/métodos , Compostos Radiofarmacêuticos/síntese química , Animais , Compostos de Boro/química , Hipóxia Celular , Células HT29 , Humanos , Masculino , Camundongos , Camundongos Endogâmicos NOD , Camundongos SCID , Compostos Radiofarmacêuticos/farmacocinética , Distribuição Tecidual
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