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Couto JS, Almeida MFO, Trindade VCG, Marone MMS, Scalissi NM, Cury AN, Ferraz C, Padovani RP. A cutoff thyroglobulin value suggestive of distant metastases in differentiated thyroid cancer patients. Braz J Med Biol Res 2020; 53:e9781. [PMID: 33053096 PMCID: PMC7561073 DOI: 10.1590/1414-431x20209781] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 07/15/2020] [Indexed: 11/22/2022] Open
Abstract
Serum thyroglobulin is used as part of the early postoperative assessment of differentiated thyroid cancer (DTC) since there is a clear relationship between an increased risk of recurrence and persistent disease after initial treatment and high postoperative stimulated thyroglobulin (ps-Tg) values. Thus, although ps-Tg above 10-30 ng/mL is considered an independent predictor of worse prognosis, the value that is associated with distant metastases is not defined. Thus, this was our objective. We selected 655 DTC patients from a nuclear medicine department database (Irmandade Santa Casa de Misericórdia de São Paulo, Brazil). All patients had received total thyroidectomy and radioactive iodine (RAI) therapy and had ps-Tg values higher than 10 ng/mL with negative anti-thyroglobulin antibodies. Then, we selected patients who presented post-therapy whole-body scan with pulmonary and/or bone uptake but with no mediastinum or cervical uptake. Patients with negative findings on functional imaging or any doubt on lung/bone uptake were submitted to additional exams to exclude another non-thyroid tumor. Of the 655 patients, 14.3% had pulmonary and 4.4% bone metastases. There was a significant difference in ps-Tg levels between patients with and without metastases (P<0.001). The cutoff value of ps-Tg was 117.5 ng/mL (sensitivity: 70.2%; specificity: 71.7%) for those with lung metastasis, and 150.5 ng/mL (sensitivity: 79.3%; specificity: 85%) for those with bone metastasis. The cutoff value for patients with eitherpulmonary or bone metastasis was 117.5 ng/mL (sensitivity: 70.2%; specificity: 83.7%). Our findings demonstrated that ps-Tg could predict distant metastasis in DTC patients. We identified a cutoff of 117.5 ng/mL with a high negative predictive value of 93.7%.
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Affiliation(s)
- J S Couto
- Serviço de Endocrinologia e Metabologia, Departamento de Medicina, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, SP, Brasil
| | - M F O Almeida
- Serviço de Endocrinologia e Metabologia, Departamento de Medicina, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, SP, Brasil
| | - V C G Trindade
- Serviço de Endocrinologia e Metabologia, Departamento de Medicina, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, SP, Brasil
| | - M M S Marone
- Serviço de Endocrinologia e Metabologia, Departamento de Medicina, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, SP, Brasil.,Serviço de Medicina Nuclear, Nuclimagem, São Paulo, SP, Brasil.,Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, SP, Brasil
| | - N M Scalissi
- Serviço de Endocrinologia e Metabologia, Departamento de Medicina, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, SP, Brasil.,Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, SP, Brasil
| | - A N Cury
- Serviço de Endocrinologia e Metabologia, Departamento de Medicina, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, SP, Brasil.,Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, SP, Brasil
| | - C Ferraz
- Serviço de Endocrinologia e Metabologia, Departamento de Medicina, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, SP, Brasil.,Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, SP, Brasil
| | - R P Padovani
- Serviço de Endocrinologia e Metabologia, Departamento de Medicina, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, SP, Brasil.,Serviço de Medicina Nuclear, Nuclimagem, São Paulo, SP, Brasil.,Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, SP, Brasil
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2
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Yang JH, Maciel RMB, Nakabashi CCD, Janovsky CCPS, Padovani RP, Macellaro D, Camacho CP, Osawa A, Wagner J, Biscolla RPM. Clinical utility of 18F-FDG PET/CT in the follow-up of a large cohort of patients with high-risk differentiated thyroid carcinoma. Arch Endocrinol Metab 2017; 61:416-425. [PMID: 28977157 PMCID: PMC10522253 DOI: 10.1590/2359-3997000000285] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Accepted: 03/18/2017] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To evaluate the clinical utility of 18F-FDG PET/CT in patients with high-risk DTC. SUBJECTS AND METHODS Single-center retrospective study with 74 patients with high-risk differentiated thyroid cancer (DTC), classified in 4 groups. Group 1: patients with positive sTg or TgAb, subdivided in Group 1A: negative RxWBS and no foci of metastases identified at conventional image (n = 9); Group 1B: RxWBS not compatible with suspicious foci at conventional image or not proportional to sTg level (n = 13); Group 2: patients with histological findings of aggressive DTC variants (n = 21) and Group 3: patients with positive RxWBS (n = 31). RESULTS 18F-FDG PET/CT identified undifferentiated lesions and helped restage the disease in groups 1B and 2. The scan helped guide clinical judgment in 9/13 (69%) patients of group 1B, 10/21 (48%) patients of group 2 and 2/31 (6%) patients of group 3. There was no clinical benefit associated with group 1A. 18F-FDG PET/CT was associated with progressive disease. CONCLUSION 18F-FDG PET/CT is a useful tool in the follow-up of patients with high-risk DTC, mainly in the group of RxWBS not compatible with suspicious foci at conventional image or not proportional to sTg level and in those with aggressive DTC variants. Additionally, this study showed that 18F-FDG PET/CT was associated with progression and helped display undifferentiated lesions guiding clinical assessments regarding surgeries or expectant treatments.
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Affiliation(s)
- Ji H. Yang
- Divisão de EndocrinologiaDepartamento de Medicina, Escola Paulista de MedicinaUniversidade Federal de São PauloSão PauloSPBrazilCentro de Doenças da Tireoide e Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Departamento de Medicina, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brazil
| | - Rui M. B. Maciel
- Divisão de EndocrinologiaDepartamento de Medicina, Escola Paulista de MedicinaUniversidade Federal de São PauloSão PauloSPBrazilCentro de Doenças da Tireoide e Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Departamento de Medicina, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brazil
| | - Claudia C. D. Nakabashi
- Divisão de EndocrinologiaDepartamento de Medicina, Escola Paulista de MedicinaUniversidade Federal de São PauloSão PauloSPBrazilCentro de Doenças da Tireoide e Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Departamento de Medicina, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brazil
| | - Carolina C. P. S. Janovsky
- Divisão de EndocrinologiaDepartamento de Medicina, Escola Paulista de MedicinaUniversidade Federal de São PauloSão PauloSPBrazilCentro de Doenças da Tireoide e Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Departamento de Medicina, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brazil
| | - Rosalia P. Padovani
- Divisão de EndocrinologiaDepartamento de Medicina, Escola Paulista de MedicinaUniversidade Federal de São PauloSão PauloSPBrazilCentro de Doenças da Tireoide e Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Departamento de Medicina, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brazil
| | - Danielle Macellaro
- Divisão de EndocrinologiaDepartamento de Medicina, Escola Paulista de MedicinaUniversidade Federal de São PauloSão PauloSPBrazilCentro de Doenças da Tireoide e Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Departamento de Medicina, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brazil
| | - Cléber P. Camacho
- Divisão de EndocrinologiaDepartamento de Medicina, Escola Paulista de MedicinaUniversidade Federal de São PauloSão PauloSPBrazilCentro de Doenças da Tireoide e Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Departamento de Medicina, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brazil
| | - Akemi Osawa
- Departamento de ImagemHospital Israelita Albert EinsteinSão PauloSPBrazilDepartamento de Imagem, Hospital Israelita Albert Einstein (HIAE), São Paulo, SP, Brazil
| | - Jairo Wagner
- Departamento de ImagemHospital Israelita Albert EinsteinSão PauloSPBrazilDepartamento de Imagem, Hospital Israelita Albert Einstein (HIAE), São Paulo, SP, Brazil
| | - Rosa Paula M. Biscolla
- Divisão de EndocrinologiaDepartamento de Medicina, Escola Paulista de MedicinaUniversidade Federal de São PauloSão PauloSPBrazilCentro de Doenças da Tireoide e Laboratório de Endocrinologia Molecular e Translacional, Divisão de Endocrinologia, Departamento de Medicina, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brazil
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Padovani RP, Tuttle RM, Grewal R, Larson SM, Boucai L. Complete blood counts are frequently abnormal 1 year after dosimetry-guided radioactive iodine therapy for metastatic thyroid cancer. Endocr Pract 2016; 20:213-20. [PMID: 24126230 DOI: 10.4158/ep13172.or] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Radioactive iodine (RAI) has been associated with hematologic abnormalities. Previous research has shown that even a single dose of RAI can cause changes in the peripheral complete blood count (CBC). It is unclear if the use of dosimetry guidance would prevent the effects of high doses of RAI on bone marrow suppression. METHODS CBC at baseline was compared to a CBC obtained 1 year after the last RAI treatment in 50 thyroid cancer patients that received ≥250 mCi RAI during the course of their disease. Cumulative dose, number of treatments, patients' age, and the use of external beam radiation therapy (EBRT) were considered in the analysis. RESULTS We observed a small but statistically significant decrease in hemoglobin (Hb), hematocrit (Hct), and platelet (Plt) counts at 1 year in 50 patients who had received ≥250 mCi RAI. We did not find a significant change in white blood cell count (WBC). Approximately 60% of patients who developed anemia had concomitant WBC and Plt abnormalities. RAI dose, number of treatments, and age at diagnosis did not confer a higher risk of bone marrow suppression. CONCLUSION High cumulative activities of RAI administered under dosimetric guidance are associated with a small but statistically significant decreases in Hb, Hct, and Plt counts. The clinical implications of these changes, if any, are unclear. The benefits obtained with high doses of RAI, when indicated, are likely to outweigh the minimal hematologic risks observed in the present study.
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Affiliation(s)
| | - R Michael Tuttle
- Endocrinology, Memorial Sloan-Kettering Cancer Center, New York, New York
| | - Ravinder Grewal
- Nuclear Medicine Services, Memorial Sloan-Kettering Cancer Center, New York, New York
| | - Steve M Larson
- Nuclear Medicine Services, Memorial Sloan-Kettering Cancer Center, New York, New York
| | - Laura Boucai
- Endocrinology, Memorial Sloan-Kettering Cancer Center, New York, New York
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Janovsky CC, Maciel RM, Camacho CP, Padovani RP, Nakabashi CC, Yang JH, Malouf EZ, Ikejiri ES, Mamone MCO, Wagner J, Andreoni DM, Biscolla RPM. A Prospective Study Showing an Excellent Response of Patients with Low-Risk Differentiated Thyroid Cancer Who Did Not Undergo Radioiodine Remnant Ablation after Total Thyroidectomy. Eur Thyroid J 2016; 5:44-9. [PMID: 27099838 PMCID: PMC4836168 DOI: 10.1159/000442048] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 10/29/2015] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVES To prospectively evaluate the outcome of patients with low-risk papillary thyroid carcinoma treated with total thyroidectomy (TT) who did not undergo radioiodine remnant ablation (RRA). STUDY DESIGN We prospectively followed up 57 patients; 3 months after TT, thyroglobulin (Tg) assessment and neck ultrasonography (US) were performed while patients were taking l-T4, presenting suppressed TSH. Six months after TT, patients underwent stimulated Tg testing and whole-body scan (WBS) after recombinant TSH (rhTSH). Then, 18 months after TT, the patients were evaluated by neck US and Tg under TSH between 0.5 and 2.0 mIU/ml. Two years after TT, we performed another rhTSH assessment, measuring Tg and making a WBS. The patients were then annually monitored with neck US and Tg measurement under TSH between 0.5 and 2.0 mIU/l for 36-84 months. RESULTS Neck US of all patients, 3 months after TT, presented no evidence of abnormal residual tissues or metastatic lymph nodes (negative neck US); at this time, the mean Tg level was 0.42 ng/ml. Six months after surgery, after rhTSH, the mean thyroid bed uptake was 1.82%, and Tg levels ranged from 0.10 to 22.30 ng/ml (mean, 2.89 ng/ml). The patients were followed up without any sign of recurrence (negative neck US and stable or decreasing Tg levels). During the ongoing follow-up, the Tg trend was stable or decreasing, independently of the initial suppressed or stimulated Tg level, or WBS uptake. CONCLUSIONS In patients with low-risk differentiated thyroid cancer, who were operated by TT and who did not undergo RRA, an excellent response to treatment may be confirmed by annual neck US and Tg trend.
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Affiliation(s)
- Carolina C.P.S. Janovsky
- Thyroid Diseases Center and Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, São Paulo, Brazil
| | - Rui M.B. Maciel
- Thyroid Diseases Center and Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, São Paulo, Brazil
- *Rui M.B. Maciel, MD, PhD, Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Pedro de Toledo 669, 11th Floor, São Paulo, SP 04039-032 (Brazil), E-Mail
| | - Cleber P. Camacho
- Thyroid Diseases Center and Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, São Paulo, Brazil
| | - Rosalia P. Padovani
- Thyroid Diseases Center and Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, São Paulo, Brazil
| | - Claudia C. Nakabashi
- Thyroid Diseases Center and Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, São Paulo, Brazil
| | - Ji H. Yang
- Thyroid Diseases Center and Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, São Paulo, Brazil
| | - Eduardo Z. Malouf
- Thyroid Diseases Center and Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, São Paulo, Brazil
| | - Elza S. Ikejiri
- Thyroid Diseases Center and Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, São Paulo, Brazil
| | - M. Conceição O.C. Mamone
- Thyroid Diseases Center and Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, São Paulo, Brazil
| | - Jairo Wagner
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, São Paulo, Brazil
| | - Danielle M. Andreoni
- Thyroid Diseases Center and Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, São Paulo, Brazil
| | - Rosa Paula M. Biscolla
- Thyroid Diseases Center and Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, São Paulo, Brazil
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Nakabashi CC, Kasamatsu TS, Crispim F, Yamazaki CA, Camacho CP, Andreoni DM, Padovani RP, Ikejiri ES, Mamone MC, Aldighieri FC, Wagner J, Hidal JT, Vieira JG, Biscolla RP, Maciel RM. Basal serum thyroglobulin measured by a second-generation assay is equivalent to stimulated thyroglobulin in identifying metastases in patients with differentiated thyroid cancer with low or intermediate risk of recurrence. Eur Thyroid J 2014; 3:43-50. [PMID: 24847465 PMCID: PMC4005259 DOI: 10.1159/000360077] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 01/27/2014] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Guidelines for the follow-up of differentiated thyroid cancer (DTC) recommend the measurement of TSH-stimulated thyroglobulin (s-Tg) instead of basal Tg on T4 therapy (b-Tg). However, these guidelines were established using first-generation Tg assays with a functional sensitivity (FS) of 0.5-1.0 ng/ml. Current more sensitive second-generation Tg assays (Tg2G; FS 0.05-0.10 ng/ml) have shown that low-risk DTC patients with undetectable b-Tg rarely have recurrences. OBJECTIVES This study was undertaken to compare b-Tg using a chemiluminescent Tg2G assay (Tg2GICMA; FS 0.1 ng/ml) with s-Tg in DTC patients with an intermediate risk of recurrence. METHODS We evaluated 168 DTC patients with a low (n = 101) and intermediate (n = 67) risk of recurrence treated by total thyroidectomy (147 also treated with radioiodine), with a mean follow-up of 5 years. RESULTS b-Tg was undetectable with the Tg2GICMA in 142 of 168 patients. s-Tg was <2 ng/ml in 138 of these 142 patients, and only 3 of these 138 (2%) presented metastases on cervical ultrasound (US). Of the 4 of 142 patients with s-Tg >2 ng/ml, 1 had cervical metastases seen after radioiodine. Furthermore, 26 of 168 patients presented detectable b-Tg with the Tg2GICMA; 17 of these 26 patients also presented s-Tg >2 ng/ml. In 10 of these 17 patients, metastases were detected. Cervical US or b-Tg were positive in 14 of 15 patients with recurrent disease. Globally, the sensitivity and negative predictive value of the Tg2GICMA plus US were 93 and 99%, respectively. CONCLUSION b-Tg measured with a Tg2GICMA and cervical US, used together, are equivalent to s-Tg in identifying metastases in patients with DTC with a low or intermediate risk of recurrence.
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Affiliation(s)
- Cláudia C.D. Nakabashi
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, Brazil
- Fleury Medicina e Saúde, São Paulo, Brazil
| | - Teresa S. Kasamatsu
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil
| | - Felipe Crispim
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil
| | - Claudia A. Yamazaki
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil
| | - Cléber P. Camacho
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, Brazil
| | - Danielle M. Andreoni
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, Brazil
| | - Rosalia P. Padovani
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, Brazil
| | - Elza S. Ikejiri
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, Brazil
| | - Maria C.O.M. Mamone
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, Brazil
| | | | - Jairo Wagner
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, Brazil
| | - Jairo T. Hidal
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, Brazil
| | - José G.H. Vieira
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil
- Fleury Medicina e Saúde, São Paulo, Brazil
| | - Rosa P.M. Biscolla
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, Brazil
- Fleury Medicina e Saúde, São Paulo, Brazil
| | - Rui M.B. Maciel
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brazil
- Thyroid Diseases Center, Instituto Israelita de Ensino e Pesquisa Albert Einstein, Brazil
- Fleury Medicina e Saúde, São Paulo, Brazil
- *Rui M.B. Maciel, MD, PhD, Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Pedro de Toledo 669, 11th Floor, 04039-032 São Paulo, SP (Brazil), E-Mail
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Yamazaki CA, Padovani RP, Biscolla RPM, Ikejiri ES, Marchetti RR, Castiglioni MLV, Matsumura LK, Maciel RMDB, Furlanetto RP. Lithium as an adjuvant in the postoperative ablation of remnant tissue in low-risk thyroid carcinoma. Thyroid 2012; 22:1002-6. [PMID: 22953991 DOI: 10.1089/thy.2011.0372] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Thyroid remnant ablation (RA) with 30 mCi of radioactive iodine (131I) in patients thyroidectomized for treatment of low-risk differentiated thyroid carcinoma (DTC) has a success rate of 64% to 84%. Lithium increases the residence time of 131I in the thyroid tissue. The aim of this study was to determine if lithium treatment added to 30 mCi 131I would enhance the success rate of this treatment compared with 30 mCi 131I alone in patients who were thyroidectomized for treatment of low-risk DTC. METHODS This was a randomized study with endpoint at one year. Sixty one consecutive patients were enrolled and randomized into two groups: group A (n=32) treated with 30 mCi 131I; group B (n=29) treated with 30 mCi 131I plus an oral dose of lithium 900 mg/day, for 7 days. All patients were evaluated by whole body scan (WBS) with 123I and had serum TSH, thyroglobulin (Tg), and anti-Tg antibodies (TgAb) determined when they were hypothyroid on no thyroid hormone. Patients were reevaluated after one year with serum TSH, Tg, and TgAb determinations and WBS with 123I. The criteria for defining a successful outcome was a negative WBS and a serum Tg of <1. RESULTS Group A was composed of 28 women and four men (ages 25-71 years) with 2 having follicular thyroid carcinoma (FTC), 22 having papillary thyroid carcinoma (PTC) of 1-4.5 cm, and 8 having micro PTCs (mPTC) of 0.3-0.8 cm. Group B was composed of 26 women and 3 men (ages 20-63 years) with 3 having FTC, 15 having PTC of 1.2-3.5 cm, and 11 having mPTC of 0.2-0.8 cm. All patients had a history of a WBS after their post-therapeutic 131I dose that showed uptake in the cervical region. After one year, 22 patients from group A had a negative WBS (68.75%) and in group B, 27 patients had a negative WBS (93.1%). The successful rates for the follow-up WBS were significantly different (p=0.017). There were 19 patients in group A in whom the initial Tg was positive. Of these, 14 had a negative follow-up Tg (73.7%). Group B had 9 patients with a positive initial Tg and all of them had a negative follow-up Tg (100%). CONCLUSION The addition of lithium to treatment with 30 mCi 131I in thyroidectomized patients with low-risk DTC improved the efficacy of thyroid RA and therefore might be a better alternative than using higher doses of 131I for remnant ablation in these patients.
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Affiliation(s)
- Claudia Akemi Yamazaki
- Division of Endocrinology, Department of Medicine, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
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