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Chaker L, Bianco AC, Jonklaas J, Peeters RP. Hypothyroidism. Lancet 2017; 390:1550-1562. [PMID: 28336049 PMCID: PMC6619426 DOI: 10.1016/s0140-6736(17)30703-1] [Citation(s) in RCA: 584] [Impact Index Per Article: 83.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Revised: 01/15/2017] [Accepted: 01/19/2017] [Indexed: 12/19/2022]
Abstract
Hypothyroidism is a common condition of thyroid hormone deficiency, which is readily diagnosed and managed but potentially fatal in severe cases if untreated. The definition of hypothyroidism is based on statistical reference ranges of the relevant biochemical parameters and is increasingly a matter of debate. Clinical manifestations of hypothyroidism range from life threatening to no signs or symptoms. The most common symptoms in adults are fatigue, lethargy, cold intolerance, weight gain, constipation, change in voice, and dry skin, but clinical presentation can differ with age and sex, among other factors. The standard treatment is thyroid hormone replacement therapy with levothyroxine. However, a substantial proportion of patients who reach biochemical treatment targets have persistent complaints. In this Seminar, we discuss the epidemiology, causes, and symptoms of hypothyroidism; summarise evidence on diagnosis, long-term risk, treatment, and management; and highlight future directions for research.
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Affiliation(s)
- Layal Chaker
- Academic Centre for Thyroid Disease, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - Antonio C Bianco
- Division of Endocrinology and Metabolism, Rush University Medical Center, Chicago, IL, USA
| | | | - Robin P Peeters
- Academic Centre for Thyroid Disease, Erasmus University Medical Centre, Rotterdam, Netherlands.
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Elective nodal dose of 60 Gy or 50 Gy in head and neck cancers: A matched pair analysis of outcomes and toxicity. Adv Radiat Oncol 2017; 2:339-345. [PMID: 29114601 PMCID: PMC5605312 DOI: 10.1016/j.adro.2017.06.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Revised: 05/04/2017] [Accepted: 06/20/2017] [Indexed: 11/23/2022] Open
Abstract
Purpose The main objective of this study was to evaluate appropriate doses for elective nodal irradiation (ENI) in head and neck squamous cell carcinoma (HNSCC) patients to optimize the therapeutic ratio. Methods and materials A matched pair analysis of 2 similar cohorts of HNSCC treated with intensity modulated radiation therapy with different dose prescriptions to the elective nodal regions was conducted. One group received 60 Gy, whereas the other received 50 Gy (ENI60 and ENI50 groups, respectively). Isolated regional recurrences (IRR) and locoregional control were evaluated. Doses received by the parotid and thyroid glands were compared among both groups and were clinically correlated with the trend of salivary function recovery and incidence of hypothyroidism. Results Of the 110 patients studied, 97 were eligible for analysis after matching based on propensity scores. The 3-year locoregional control rate was similar in ENI60 and ENI50 (78.7% and 77%, respectively; P = .93). There were no IRR in ENI regions in either group. The mean ipsilateral parotid dose in ENI60 was significantly higher compared with ENI50 (42 vs 35.7 Gy, P = .03). There was no significant difference in the mean contralateral parotid doses (32.5 vs 31.7 Gy, P = .6). The mean thyroid doses were high in ENI60 compared with ENI50 (54.7 vs 43.3 Gy, P < .001). A significant difference in ipsilateral parotid salivary excretory fraction ratio at 1 year (P = .03) was observed with quicker recovery of salivary function. The salivary excretory fractions were poorer in the ENI60 group with higher mean parotid doses (P = .009). At 2 years, 26 patients (54%) in the ENI60 group and 13 patients (26.5%) in the ENI50 group developed biochemical hypothyroidism (P = .007). Conclusions Doses of 50 Gy equivalent are sufficient to sterilize the uninvolved nodal regions because the rates of IRR are extremely low. Using ENI50 results in clinically meaningful reduction in salivary and thyroid toxicity in HNSCC.
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Deseyne P, Speleers B, De Neve W, Boute B, Paelinck L, Van Hoof T, Van de Velde J, Van Greveling A, Monten C, Post G, Depypere H, Veldeman L. Whole breast and regional nodal irradiation in prone versus supine position in left sided breast cancer. Radiat Oncol 2017; 12:89. [PMID: 28549483 PMCID: PMC5446717 DOI: 10.1186/s13014-017-0828-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 05/17/2017] [Indexed: 12/25/2022] Open
Abstract
Background Prone whole breast irradiation (WBI) leads to reduced heart and lung doses in breast cancer patients receiving adjuvant radiotherapy. In this feasibility trial, we investigated the prone position for whole breast + lymph node irradiation (WB + LNI). Methods A new support device was developed for optimal target coverage, on which patients are positioned in a position resembling a phase from the crawl swimming technique (prone crawl position). Five left sided breast cancer patients were included and simulated in supine and prone position. For each patient, a treatment plan was made in prone and supine position for WB + LNI to the whole axilla and the unoperated part of the axilla. Patients served as their own controls for comparing dosimetry of target volumes and organs at risk (OAR) in prone versus in supine position. Results Target volume coverage differed only slightly between prone and supine position. Doses were significantly reduced (P < 0.05) in prone position for ipsilateral lung (Dmean, D2, V5, V10, V20, V30), contralateral lung (Dmean, D2), contralateral breast (Dmean, D2 and for total axillary WB + LNI also V5), thyroid (Dmean, D2, V5, V10, V20, V30), oesophagus (Dmean and for partial axillary WB + LNI also D2 and V5), skin (D2 and for partial axillary WB + LNI V105 and V107). There were no significant differences for heart and humeral head doses. Conclusions Prone crawl position in WB + LNI allows for good breast and nodal target coverage with better sparing of ipsilateral lung, thyroid, contralateral breast, contralateral lung and oesophagus when compared to supine position. There is no difference in heart and humeral head doses. Trial registration No trial registration was performed because there were no therapeutic interventions.
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Affiliation(s)
- Pieter Deseyne
- Department of Radiation Oncology, Ghent University Hospital, De Pintelaan 185, Ghent, B-9000, Belgium. .,Department of Radiotherapy and Experimental Cancer Research, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, Ghent, B-9000, Belgium.
| | - Bruno Speleers
- Department of Radiotherapy and Experimental Cancer Research, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, Ghent, B-9000, Belgium
| | - Wilfried De Neve
- Department of Radiation Oncology, Ghent University Hospital, De Pintelaan 185, Ghent, B-9000, Belgium.,Department of Radiotherapy and Experimental Cancer Research, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, Ghent, B-9000, Belgium
| | - Bert Boute
- Department of Radiotherapy and Experimental Cancer Research, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, Ghent, B-9000, Belgium.,Industrial Design Centre - Department of Industrial Systems Engineering and Product Design (EA18), Faculty of Engineering and Architecture, Ghent University, Campus Kortrijk, Graaf Karel de Goedelaan 5, Kortrijk, B-8500, Belgium
| | - Leen Paelinck
- Department of Radiation Oncology, Ghent University Hospital, De Pintelaan 185, Ghent, B-9000, Belgium
| | - Tom Van Hoof
- Department of Anatomy, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, Ghent, B-9000, Belgium
| | - Joris Van de Velde
- Department of Anatomy, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, Ghent, B-9000, Belgium
| | - Annick Van Greveling
- Department of Radiation Oncology, Ghent University Hospital, De Pintelaan 185, Ghent, B-9000, Belgium
| | - Chris Monten
- Department of Radiation Oncology, Ghent University Hospital, De Pintelaan 185, Ghent, B-9000, Belgium.,Department of Radiotherapy and Experimental Cancer Research, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, Ghent, B-9000, Belgium
| | - Giselle Post
- Department of Radiotherapy and Experimental Cancer Research, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, Ghent, B-9000, Belgium
| | - Herman Depypere
- Department of Obstetrics and Gynaecology, Ghent University Hospital, De Pintelaan 185, Ghent, B-9000, Belgium.,Department of Uro-gynaecology, Ghent University, De Pintelaan 185, Ghent, B-9000, Belgium
| | - Liv Veldeman
- Department of Radiation Oncology, Ghent University Hospital, De Pintelaan 185, Ghent, B-9000, Belgium.,Department of Radiotherapy and Experimental Cancer Research, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, Ghent, B-9000, Belgium
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Zhai RP, Kong FF, Du CR, Hu CS, Ying HM. Radiation-induced hypothyroidism after IMRT for nasopharyngeal carcinoma: Clinical and dosimetric predictors in a prospective cohort study. Oral Oncol 2017; 68:44-49. [DOI: 10.1016/j.oraloncology.2017.03.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 02/28/2017] [Accepted: 03/12/2017] [Indexed: 12/19/2022]
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Ling S, Bhatt AD, Brown NV, Nguyen P, Sipos JA, Chakravarti A, Rong Y. Correlative study of dose to thyroid and incidence of subsequent dysfunction after head and neck radiation. Head Neck 2016; 39:548-554. [PMID: 27905164 DOI: 10.1002/hed.24643] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Revised: 09/10/2016] [Accepted: 10/21/2016] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Thyroid dysfunction is common after radiotherapy (RT) for patients with head and neck cancers. We attempted to discover RT dose parameters that correspond with RT-induced thyroid dysfunction. METHODS Records of 102 patients who received RT from 2008 to 2010 were reviewed with respect to thyroid function. Abnormalities were grouped in 2 ways: (1) none, transient, or permanent; and (2) overt or subclinical. RESULTS At median follow-up of 33.5 months, incidence of any thyroid abnormality was 39.2% (women vs men - 50% vs 35%). Permanent dysfunction was seen in 24.5% with higher incidence in women versus men (42.9% vs 17.6%; p = .0081). Permanent abnormalities most strongly correlated with D50% (p = .0275). V50Gy also correlated with thyroid dysfunction post-RT (p = .0316). Concurrent chemotherapy increased permanent dysfunction (p = .0008). CONCLUSION Achieving D50% <50 Gy, V50 <50%, and mean dose <54.58 Gy during RT planning may decrease the incidence; whereas female sex and concurrent chemotherapy seem to increase the risk of RT-induced hypothyroidism. © 2016 Wiley Periodicals, Inc. Head Neck 39: 548-554, 2017.
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Affiliation(s)
- Stella Ling
- Department of Radiation Oncology, The Ohio State University, Columbus, Ohio
| | - Aashish D Bhatt
- Department of Radiation Oncology, The Ohio State University, Columbus, Ohio
| | - Nicole V Brown
- Department of Biomedical Informatics, The Ohio State University, Columbus, Ohio
| | - Phuong Nguyen
- Department of Radiation Oncology, The Ohio State University, Columbus, Ohio
| | - Jennifer A Sipos
- Department of Endocrinology, The Ohio State University, Columbus, Ohio
| | - Arnab Chakravarti
- Department of Radiation Oncology, The Ohio State University, Columbus, Ohio
| | - Yi Rong
- Department of Radiation Oncology, The Ohio State University, Columbus, Ohio.,Department of Radiation Oncology, University of California - Davis Comprehensive Cancer Center, Sacramento, California
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Lee HJ, Hahn SM, Jin SL, Shin YJ, Kim SH, Lee YS, Kim HS, Lyu CJ, Han JW. Subclinical Hypothyroidism in Childhood Cancer Survivors. Yonsei Med J 2016; 57:915-22. [PMID: 27189285 PMCID: PMC4951468 DOI: 10.3349/ymj.2016.57.4.915] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 08/30/2015] [Accepted: 11/01/2015] [Indexed: 12/12/2022] Open
Abstract
PURPOSE In childhood cancer survivors, the most common late effect is thyroid dysfunction, most notably subclinical hypothyroidism (SCH). Our study evaluated the risk factors for persistent SCH in survivors. MATERIALS AND METHODS Survivors (n=423) were defined as patients who survived at least 2 years after cancer treatment completion. Thyroid function was assessed at this time and several years thereafter. Two groups of survivors with SCH were compared: those who regained normal thyroid function during the follow-up period (normalized group) and those who did not (persistent group). RESULTS Overall, 104 of the 423 survivors had SCH. SCH was observed in 26% of brain or nasopharyngeal cancer survivors (11 of 43) and 21.6% of leukemia survivors (35 of 162). Sixty-two survivors regained normal thyroid function, 30 remained as persistent SCH, and 12 were lost to follow-up. The follow-up duration was 4.03 (2.15-5.78) years. Brain or nasopharyngeal cancer and Hodgkin disease were more common in the persistent group than in the normalized group (p=0.002). More patients in the persistent group received radiation (p=0.008). Radiation to the head region was higher in this group (2394±2469 cGy) than in the normalized group (894±1591 cGy; p=0.003). On multivariable analysis, lymphoma (p=0.011), brain or nasopharyngeal cancer (p=0.039), and head radiation dose ≥1800 cGy (p=0.039) were significant risk factors for persistent SCH. CONCLUSION SCH was common in childhood cancer survivors. Brain or nasopharyngeal cancer, lymphoma, and head radiation ≥1800 cGy were significant risk factors for persistent SCH.
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Affiliation(s)
- Hyun Joo Lee
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Korea
- Department of Pediatric Hemato-Oncology, Yonsei Cancer Center, Yonsei University Health System, Seoul, Korea
| | - Seung Min Hahn
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Korea
- Department of Pediatric Hemato-Oncology, Yonsei Cancer Center, Yonsei University Health System, Seoul, Korea
| | - Song Lee Jin
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Korea
- Department of Pediatric Hemato-Oncology, Yonsei Cancer Center, Yonsei University Health System, Seoul, Korea
| | - Yoon Jung Shin
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Korea
- Department of Pediatric Hemato-Oncology, Yonsei Cancer Center, Yonsei University Health System, Seoul, Korea
| | - Sun Hee Kim
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Korea
- Department of Pediatric Hemato-Oncology, Yonsei Cancer Center, Yonsei University Health System, Seoul, Korea
| | - Yoon Sun Lee
- Department of Pharmacy, Yonsei Cancer Center, Yonsei University Health System, Seoul, Korea
| | - Hyo Sun Kim
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Korea
- Department of Pediatric Hemato-Oncology, Yonsei Cancer Center, Yonsei University Health System, Seoul, Korea
| | - Chuhl Joo Lyu
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Korea
- Department of Pediatric Hemato-Oncology, Yonsei Cancer Center, Yonsei University Health System, Seoul, Korea
| | - Jung Woo Han
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Korea
- Department of Pediatric Hemato-Oncology, Yonsei Cancer Center, Yonsei University Health System, Seoul, Korea.
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Denaro N, Merlano MC, Russi EG. Follow-up in Head and Neck Cancer: Do More Does It Mean Do Better? A Systematic Review and Our Proposal Based on Our Experience. Clin Exp Otorhinolaryngol 2016; 9:287-297. [PMID: 27337948 PMCID: PMC5115151 DOI: 10.21053/ceo.2015.00976] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 12/02/2015] [Accepted: 12/29/2015] [Indexed: 12/19/2022] Open
Abstract
As the patients population ages, cancer screening increases, and cancer treatments improve, millions more head and neck carcinoma (HNC) patients will be classified as cancer survivors in the future. Change in epidemiology with human papillomavirus related HNC leads to a number of young treated patients. After treatment for HNC intensive surveillance, including ear, nose and throat (ENT) endoscopy, imaging, and serology, confers a survival benefit that became less evident in unresectable recurrence. We performed a comprehensive revision of literature and analyzed the experience of our centre. We revised publications on this topic and added data derived from the interdisciplinary work of experts within medical oncology, ENT, and radiation oncology scientific societies. We retrospectively collected local and distant recurrence of chemoradiation treated patients at Santa Croce and Carle University Hospital. A HNC follow-up program is not already codified and worldwide accepted. There is a need of scheduled follow-up. We suggest adopting a standardized follow-up guideline, although a multidisciplinary approach is frequently requested to tailor surveillance program and treatment on each patient.
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Affiliation(s)
- Nerina Denaro
- Department of Oncology, A.S.O. Santa Croce e Carle, Cuneo, Italy
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Dosimetric Predictors of Hypothyroidism After Radical Intensity-modulated Radiation Therapy for Non-metastatic Nasopharyngeal Carcinoma. Clin Oncol (R Coll Radiol) 2016; 28:e52-60. [PMID: 27235379 DOI: 10.1016/j.clon.2016.05.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 02/25/2016] [Accepted: 04/06/2016] [Indexed: 11/23/2022]
Abstract
AIMS To investigate dosimetric predictors of hypothyroidism after radical intensity-modulated radiation therapy (IMRT) for non-metastatic nasopharyngeal carcinoma (NPC). MATERIALS AND METHODS Patients with non-metastatic NPC treated with radical IMRT from 2008 to 2013 were reviewed. Serum thyroid function tests before and after IMRT were regularly monitored. Univariable and multivariable analyses were carried out for predictors of biochemical and clinical hypothyroidism. RESULTS In total, 149 patients were recruited. After a median follow-up duration of 3.1 years, 33 (22.1%) and 21 (14.1%) patients developed biochemical and clinical hypothyroidism, respectively. Eight (24.2%) patients who had biochemical hypothyroidism developed clinical hypothyroidism later. Univariable and multivariable analyses revealed that the volume of the thyroid (P=0.002, multivariable), VS60 (the absolute thyroid volume spared from 60 Gy or less) (P<0.001, multivariable) and VS45 (P<0.001, multivariable) of the thyroid were significant predictors of biochemical hypothyroidism. The freedom from biochemical hypothyroidism was longer for those whose VS60 ≥ 10 cm(3) (mean 90.9 versus 62.6 months; P<0.001) and VS45 ≥ 5 cm(3) (mean 91.9 versus 65.2 months; P=0.001). Similarly multivariable analyses revealed that VS60 (P=0.001) and VS45 (P=0.003) were significant predictors of clinical hypothyroidism. The freedom from clinical hypothyroidism was longer for those whose VS60 ≥ 10 cm(3) (91.5 versus 73.3 months; P=0.002) and VS45 ≥ 5 cm(3) (91.5 versus 75.9 months; P=0.007). CONCLUSIONS VS60 and VS45 of the thyroid should be considered important dose constraints against hypothyroidism without compromising target coverage during IMRT optimisation for NPC.
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Chow EJ, Anderson L, Baker KS, Bhatia S, Guilcher GMT, Huang JT, Pelletier W, Perkins JL, Rivard LS, Schechter T, Shah AJ, Wilson KD, Wong K, Grewal SS, Armenian SH, Meacham LR, Mulrooney DA, Castellino SM. Late Effects Surveillance Recommendations among Survivors of Childhood Hematopoietic Cell Transplantation: A Children's Oncology Group Report. Biol Blood Marrow Transplant 2016; 22:782-95. [PMID: 26802323 PMCID: PMC4826622 DOI: 10.1016/j.bbmt.2016.01.023] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 01/12/2016] [Indexed: 12/12/2022]
Abstract
Hematopoietic cell transplantation (HCT) is an important curative treatment for children with high-risk hematologic malignancies, solid tumors, and, increasingly, nonmalignant diseases. Given improvements in care, there are a growing number of long-term survivors of pediatric HCT. Compared with childhood cancer survivors who did not undergo transplantation, HCT survivors have a substantially increased burden of serious chronic conditions and impairments involving virtually every organ system and overall quality of life. This likely reflects the joint contributions of pretransplantation treatment exposures and organ dysfunction, the transplantation conditioning regimen, and any post-transplantation graft-versus-host disease (GVHD). In response, the Children's Oncology Group (COG) has created long-term follow-up guidelines (www.survivorshipguidelines.org) for survivors of childhood, adolescent, and young adult cancer, including those who were treated with HCT. Guideline task forces, consisting of HCT specialists, other pediatric oncologists, radiation oncologists, organ-specific subspecialists, nurses, social workers, other health care professionals, and patient advocates systematically reviewed the literature with regards to late effects after childhood cancer and HCT since 2002, with the most recent review completed in 2013. For the most recent review cycle, over 800 articles from the medical literature relevant to childhood cancer and HCT survivorship were reviewed, including 586 original research articles. Provided herein is an organ system-based overview that emphasizes the most relevant COG recommendations (with accompanying evidence grade) for the long-term follow-up care of childhood HCT survivors (regardless of current age) based on a rigorous review of the available evidence. These recommendations cover both autologous and allogeneic HCT survivors, those who underwent transplantation for nonmalignant diseases, and those with a history of chronic GVHD.
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Affiliation(s)
- Eric J Chow
- Clinical Research and Public Health Sciences Divisions, Fred Hutchinson Cancer Research Center, Seattle Children's Hospital, University of Washington, Seattle, Washington.
| | - Lynnette Anderson
- Department of Pediatric Hematology, Oncology, and Bone Marrow Transplant, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - K Scott Baker
- Clinical Research and Public Health Sciences Divisions, Fred Hutchinson Cancer Research Center, Seattle Children's Hospital, University of Washington, Seattle, Washington
| | - Smita Bhatia
- Institute for Cancer Outcomes and Survivorship, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Gregory M T Guilcher
- Departments of Oncology and Paediatrics, Alberta Children's Hospital, University of Calgary, Calgary, Alberta, Canada
| | - Jennifer T Huang
- Department of Dermatology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Wendy Pelletier
- Departments of Oncology and Paediatrics, Alberta Children's Hospital, University of Calgary, Calgary, Alberta, Canada
| | - Joanna L Perkins
- Department of Cancer and Blood Disorders, Children's Hospital and Clinics of Minnesota, Minneapolis, Minnesota
| | - Linda S Rivard
- Department of Pediatric Hematology Oncology, Advocate Children's Hospital, Oak Lawn, Illinois
| | - Tal Schechter
- Department of Paediatrics, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Ami J Shah
- Division of Stem Cell Transplant and Regenerative Medicine, Lucile Packard Children's Hospital, Stanford University, Stanford, California
| | - Karla D Wilson
- Department of Population Sciences, City of Hope National Medical Center, Duarte, California
| | - Kenneth Wong
- Department of Radiation Oncology, Children's Hospital of Los Angeles, University of Southern California, Los Angeles, California
| | - Satkiran S Grewal
- Department of Pediatrics, Baystate Children's Hospital, Tufts University School of Medicine, Springfield, Massachusetts
| | - Saro H Armenian
- Department of Population Sciences, City of Hope National Medical Center, Duarte, California
| | - Lillian R Meacham
- Department of Pediatrics, Children's Healthcare of Atlanta, Emory University, Atlanta, Georgia
| | - Daniel A Mulrooney
- Department of Oncology, St. Jude Children's Research Hospital, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Sharon M Castellino
- Department of Pediatrics, Children's Healthcare of Atlanta, Emory University, Atlanta, Georgia
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Day RW, Aloia TA. Clinical Care Pathways in Cancer Surgery. CURRENT ANESTHESIOLOGY REPORTS 2015. [DOI: 10.1007/s40140-015-0115-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Rønjom MF, Brink C, Bentzen SM, Hegedüs L, Overgaard J, Petersen JBB, Primdahl H, Johansen J. External validation of a normal tissue complication probability model for radiation-induced hypothyroidism in an independent cohort. Acta Oncol 2015; 54:1301-9. [PMID: 26248025 DOI: 10.3109/0284186x.2015.1064160] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND A normal tissue complication probability (NTCP) model for radiation-induced hypothyroidism (RIHT) was previously derived in patients with squamous cell carcinoma of the head and neck (HNSCC) discerning thyroid volume (Vthyroid), mean thyroid dose (Dmean), and latency as predictive factors. The purpose of this study was to test the performance of this model in an independent cohort of patients receiving primary radiotherapy (RT) for HNSCC. MATERIAL AND METHODS A validation cohort of 198 patients with HNSCC was included after plasma thyrotropin (TSH) assessment. RIHT was defined as TSH > 4.0 mU/l from blood samples obtained during follow-up. A new mixture NTCP model was developed from the validation cohort after multivariable analysis. Due to only one follow-up TSH assessment in the validation cohort, the time factor derived from the original cohort was fixed in a mixture model and applied for the NTCP validation. Association between model predictions of the initial model and observed clinical outcome in the validation cohort was investigated by applying the previous model (Vthyroid, Dmean and time) on the new cohort and comparing it to the clinical outcome. RESULTS Both Dmean and Vthyroid were confirmed as significant risk factors for RIHT in the validation cohort, odds ratio (OR) 1.19 (1.1-1.37) and OR 0.75 (0.57-0.9), respectively. A small difference in overall probability of RIHT was observed between the cohorts, further analysis indicated this to be related to less frequent blood tests in the validation cohort relative to the original cohort. However, Pearson's correlation coefficients between model and clinical outcome were high: r = 0.97 estimated by the original model versus the original cohort, and r = 0.97 estimated by the original model versus the new cohort. CONCLUSION Dmean and Vthyroid were significant predictors of RIHT in both cohorts. The original NTCP model demonstrated external validity owing to high Pearson's correlation coefficients between estimated and observed incidence rates of RIHT in the original as well as in the validation cohort. This model may facilitate clinically relevant estimations of RIHT after RT to the neck.
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Affiliation(s)
- Marianne F Rønjom
- a Department of Oncology , Odense University Hospital , Odense , Denmark
- b Institute of Clinical Research, University of Southern Denmark , Odense , Denmark
| | - Carsten Brink
- b Institute of Clinical Research, University of Southern Denmark , Odense , Denmark
- c Laboratory of Radiation Physics, Odense University Hospital , Odense , Denmark
| | - Søren M Bentzen
- d Division of Biostatistics and Bioinformatics, University of Maryland Greenebaum Cancer Center , Baltimore , USA
- e Department of Epidemiology and Public Health , University of Maryland School of Medicine , Baltimore , USA
| | - Laszlo Hegedüs
- b Institute of Clinical Research, University of Southern Denmark , Odense , Denmark
- f Department of Endocrinology and Metabolism , Odense University Hospital , Odense , Denmark
| | - Jens Overgaard
- g Department of Experimental Clinical Oncology , Aarhus University Hospital , Aarhus , Denmark
| | - Jørgen B B Petersen
- h Department of Medical Physics , Aarhus University Hospital , Aarhus , Denmark
| | - Hanne Primdahl
- i Department of Oncology , Aarhus University Hospital , Aarhus , Denmark
| | - Jørgen Johansen
- a Department of Oncology , Odense University Hospital , Odense , Denmark
- b Institute of Clinical Research, University of Southern Denmark , Odense , Denmark
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Tonorezos ES, Hudson MM, Edgar AB, Kremer LC, Sklar CA, Wallace WHB, Oeffinger KC. Screening and management of adverse endocrine outcomes in adult survivors of childhood and adolescent cancer. Lancet Diabetes Endocrinol 2015; 3:545-55. [PMID: 25873569 PMCID: PMC4490990 DOI: 10.1016/s2213-8587(15)00038-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
5 year survival for childhood and adolescent cancer in developed countries is now in excess of 80% and the number of survivors of cancer continues to increase worldwide. After completion of therapy, many of these survivors will face a lifelong risk of endocrine late effects. We summarise the available evidence related to the prevalence and risk factors for endocrine late effects among adult survivors of childhood and adolescent cancer. Present screening, surveillance, and treatment recommendations differ by country and region, so we also highlight the continued effort to harmonise the international guidelines for this population.
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Affiliation(s)
- Emily S Tonorezos
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Melissa M Hudson
- Departments of Oncology, Epidemiology and Cancer Control, and Psychology, St Jude Children's Research Hospital, Memphis, TN, USA
| | - Angela B Edgar
- Department of hematology and Oncology, Royal Hospital for Sick Children, Edinburgh, Scotland
| | - Leontien C Kremer
- Department of Paediatric Oncology, Emma Children's Hospital and Academic Medical Centre, Amsterdam, Netherlands
| | - Charles A Sklar
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - W Hamish B Wallace
- Department of hematology and Oncology, Royal Hospital for Sick Children, Edinburgh, Scotland
| | - Kevin C Oeffinger
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
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Seland M, Bjøro T, Furre T, Schreiner T, Bollerslev J, Fosså SD, Loge JH, Holte H, Kiserud CE. Hormonal dysfunction is frequent in cancer survivors treated with radiotherapy to the head and neck region. J Cancer Surviv 2015; 9:630-40. [PMID: 25750158 DOI: 10.1007/s11764-015-0439-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 02/09/2015] [Indexed: 12/17/2022]
Abstract
PURPOSE Cancer treatment may lead to hormonal dysfunction. Therefore, we assessed the prevalence of dysfunction in four hormonal axes among long-term cancer survivors who received radiotherapy to the head and neck region and analyzed associations between hormonal status and clinical variables. METHODS We included 140 cancer survivors who received radiotherapy to the head and neck region, either locally or through total body irradiation after a diagnosis of lymphoma, plasmacytoma/multiple myeloma, or carcinoma of the epipharynx. Radiation doses to the pituitary gland and thyroid gland were estimated, and blood samples were collected to analyze hormonal levels. RESULTS At a median of 16 years after their cancer diagnosis, 46% of cancer survivors showed dysfunction in one hormonal axis, 24% had dysfunction in two axes, and 3% had dysfunction in three axes. Twenty cancer survivors (14%) had hormone levels consistent with pituitary dysfunction. Cancer survivors who had received an estimated 30 Gray (Gy) or more to the pituitary gland had an increased risk for pituitary dysfunction in one of the hormonal axes (odds ratio [OR] 3.16, confidence interval [CI] 1.02-9.87, p = 0.047) and for growth hormone dysfunction alone (OR 2.96, CI 1.02-8.55, p = 0.045). CONCLUSIONS Abnormal hormone values are frequent after radiotherapy to the head and neck region. IMPLICATIONS FOR CANCER SURVIVORS Screening for hormonal dysfunction during follow-up might be indicated.
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Chyan A, Chen J, Shugard E, Lambert L, Quivey JM, Yom SS. Dosimetric predictors of hypothyroidism in oropharyngeal cancer patients treated with intensity-modulated radiation therapy. Radiat Oncol 2014; 9:269. [PMID: 25476839 PMCID: PMC4265326 DOI: 10.1186/s13014-014-0269-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 11/20/2014] [Indexed: 12/04/2022] Open
Abstract
Background Radiation to the neck has long been associated with an elevated risk of hypothyroidism development. The goal of the present work is to define dosimetric predictors of hypothyroidism in oropharyngeal cancer (OPC) patients treated with intensity-modulated radiation therapy. Methods Data for 123 patients, with a median follow up of 4.6 years, were retrospectively analyzed. Patients with elevated thyroid-stimulating hormone levels or with a clinical diagnosis were categorized as hypothyroid. Patient demographic parameters, thyroid volume, mean thyroid dose, the percent of thyroid volume receiving minimum specified dose levels (VxxGy), and the absolute thyroid volume spared from specified dose levels (VSxxGy) were analyzed. Normal-tissue complication probability (NTCP) was also calculated using several recently published models. Results Thyroid volume and many radiation dosimetric parameters were statistically different in the hypothyroid group. For the patients with initial thyroid volumes of 8 cc or greater, several dosimetric parameters were found to define subgroups at statistically significant lower risk of developing hypothyroidism. Patients with VS45 Gy of at least 3 cc, VS50 Gy at least 5 cc, VS50 Gy at least 6 cc, V50 Gy below 45%, V50 Gy below 55%, or mean thyroid dose below 49 Gy had a 28-38% estimated risk of hypothyroidism at 3 years compared to a 55% risk for the entire study group. Patients with a NTCP of less than 0.75 or 0.8, calculated using recently published models, were also observed to have a lower risk of developing hypothyroidism. Conclusions Based on long-term follow up data for OPC patients treated with IMRT, we recommend plan optimization objectives to reduce the volume of thyroid receiving over 45 Gy to significantly decrease the risk of developing hypothyroidism. Electronic supplementary material The online version of this article (doi:10.1186/s13014-014-0269-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Arthur Chyan
- Department of Radiation Oncology, University of California, San Francisco, 1600 Divisadero Street, Suite H1031, San Francisco, CA, 94115, USA.
| | - Josephine Chen
- Department of Radiation Oncology, University of California, San Francisco, 1600 Divisadero Street, Suite H1031, San Francisco, CA, 94115, USA.
| | - Erin Shugard
- Department of Radiation Oncology, University of California, San Francisco, 1600 Divisadero Street, Suite H1031, San Francisco, CA, 94115, USA.
| | - Louise Lambert
- Department of Radiation Oncology, University of California, San Francisco, 1600 Divisadero Street, Suite H1031, San Francisco, CA, 94115, USA.
| | - Jeanne M Quivey
- Department of Radiation Oncology, University of California, San Francisco, 1600 Divisadero Street, Suite H1031, San Francisco, CA, 94115, USA.
| | - Sue S Yom
- Department of Radiation Oncology, University of California, San Francisco, 1600 Divisadero Street, Suite H1031, San Francisco, CA, 94115, USA.
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Abstract
Thyroid hormone deficiency can have important repercussions. Treatment with thyroid hormone in replacement doses is essential in patients with hypothyroidism. In this review, we critically discuss the thyroid hormone formulations that are available and approaches to correct replacement therapy with thyroid hormone in primary and central hypothyroidism in different periods of life such as pregnancy, birth, infancy, childhood, and adolescence as well as in adult patients, the elderly, and in patients with comorbidities. Despite the frequent and long term use of l-T4, several studies have documented frequent under- and overtreatment during replacement therapy in hypothyroid patients. We assess the factors determining l-T4 requirements (sex, age, gender, menstrual status, body weight, and lean body mass), the major causes of failure to achieve optimal serum TSH levels in undertreated patients (poor patient compliance, timing of l-T4 administration, interferences with absorption, gastrointestinal diseases, and drugs), and the adverse consequences of unintentional TSH suppression in overtreated patients. Opinions differ regarding the treatment of mild thyroid hormone deficiency, and we examine the recent evidence favoring treatment of this condition. New data suggesting that combined therapy with T3 and T4 could be indicated in some patients with hypothyroidism are assessed, and the indications for TSH suppression with l-T4 in patients with euthyroid multinodular goiter and in those with differentiated thyroid cancer are reviewed. Lastly, we address the potential use of thyroid hormones or their analogs in obese patients and in severe cardiac diseases, dyslipidemia, and nonthyroidal illnesses.
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Affiliation(s)
- Bernadette Biondi
- Department of Clinical Medicine and Surgery (B.B.), University of Naples Federico II, 80131 Naples, Italy; and Washington Hospital Center (L.W.), Washington, D.C. 20010
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Akgun Z, Atasoy BM, Ozen Z, Yavuz D, Gulluoglu B, Sengoz M, Abacioglu U. V30 as a predictor for radiation-induced hypothyroidism: a dosimetric analysis in patients who received radiotherapy to the neck. Radiat Oncol 2014; 9:104. [PMID: 24885512 PMCID: PMC4029831 DOI: 10.1186/1748-717x-9-104] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Accepted: 04/27/2014] [Indexed: 12/31/2022] Open
Abstract
INTRODUCTION The purpose of this study is to evaluate the possible predictors of thyroid disorders after neck radiotherapy, with a focus on radiation dose-volume factors. METHODS Thyroid function was measured in 100 patients who had received radiotherapy to the neck, including the thyroid. All radiation-induced thyroid dysfunctions were determined with an endpoint of abnormal thyroid stimulating hormone (TSH), free triiodothyronine (fT3) and thyroxine (fT4) and thyroid peroxidase antibodies and (TPA). The total volume of the thyroid, mean radiation dose to the thyroid (Dmean) and thyroid volume percentage that received radiation doses of 10-50 Gy (V10-V50) were calculated in all patients. The evaluated risk factors for thyroid dysfunction included dose-volume parameters, sex, age, previous surgery, chemotherapy and comorbidity. RESULTS There were 52 patients with hypothyroidism and V30 (p = 0.03), thyroid volume (p = 0.01) and Dmean (p = 0.03) appeared to be correlated with hypothyroidism in univariate analysis. However, there was not association found in multivariate analysis for these factors. CONCLUSIONS Thyroid disorders after radiation therapy to the neck still represent a clinically underestimated problem. V30 may be a useful tool for evaluating the risk of hypothyroidism when determining an individual patient's treatment.
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Affiliation(s)
- Zuleyha Akgun
- Department of Radiation Oncology, Bezmi Alem Vakif University Medical School, Adnan Menderes Bulvari, 34093 Istanbul, Fatih, Turkey.
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Simo R, Bradley P, Chevalier D, Dikkers F, Eckel H, Matar N, Peretti G, Piazza C, Remacle M, Quer M. European Laryngological Society: ELS recommendations for the follow-up of patients treated for laryngeal cancer. Eur Arch Otorhinolaryngol 2014; 271:2469-79. [PMID: 24609733 DOI: 10.1007/s00405-014-2966-x] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Accepted: 02/13/2014] [Indexed: 11/30/2022]
Abstract
It is accepted that the follow-up of patients who had treatment for laryngeal cancer is a fundamental part of their care. The reasons of post-treatment follow-up include evaluation of treatment response, early identification of recurrence, early detection of new primary tumours, monitoring and management of complications, optimisation of rehabilitation, promotion smoking and excessive alcohol cessation, provision of support to patients and their families, patient counselling and education. Controversies exist in how these aims are achieved. Increasing efforts are being made to rationalise the structure and timing of head and neck cancer follow-up clinics. The aim of this document is to analyse the current evidence for the need to follow up patients who have been treated for LC and provide an up to date, evidence-based statement which is meaningful and applicable to all European Health Care Systems. A working group of the Head and Neck Cancer Committee of the ELS was constituted in 2009. A review of the current published literature on the management and follow-up of laryngeal cancer was undertaken and statements are made based on critical appraisal of the literature and best current evidence. Category recommendations were based on the Oxford Centre for Evidence-Based Medicine. Statements include: length, frequency, setting, type of health professional, clinical assessment, screening investigations, patient's education, second primary tumours, and mode of treatment considerations including radiotherapy, chemo-radiation therapy, transoral surgery and open surgery. It also addresses specific recommendations regarding patients with persistent pain, new imaging techniques, tumour markers and narrow band imaging.
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Affiliation(s)
- Ricard Simo
- Department of Otorhinolaryngology Head and Neck Surgery, Guy's and St Thomas' Hospital NHS Foundation Trust, London, UK,
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Interactive Decision-Support Tool for Risk-Based Radiation Therapy Plan Comparison for Hodgkin Lymphoma. Int J Radiat Oncol Biol Phys 2014; 88:433-45. [DOI: 10.1016/j.ijrobp.2013.10.028] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 09/09/2013] [Accepted: 10/23/2013] [Indexed: 12/25/2022]
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Wein RO. Acquired disorders of the thyroid following treatment for head and neck cancer. Expert Rev Endocrinol Metab 2013; 8:461-467. [PMID: 30754189 DOI: 10.1586/17446651.2013.827396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The multimodality management of head and neck cancer routinely utilizes radiation therapy in treatment. The hypothalamus, pituitary and thyroid gland may be included within treatment fields. The incidence of human papilloma virus-associated oropharyngeal carcinoma has seen a dramatic increase over the last 3 decades. Current guidelines for the long-term aftercare assessment advocate only for thyroid-stimulating hormone levels every 6-12 months after baseline posttreatment imaging. With a growing population of younger patients with a favorable prognosis exposed to therapeutic radiation therapy, it is anticipated that incidence of thyroid-associated complications, such as hypothyroidism and thyroid cancer, could increase significantly over time. Constructing a strategy for the long-term reassessment of these patients beyond existing guidelines may be necessary.
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Affiliation(s)
- Richard O Wein
- a Department of Otolaryngology-Head & Neck Surgery, Tufts Medical Center, 800 Washington Street, Boston, MA 02111, USA
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Rønjom MF, Brink C, Bentzen SM, Hegedüs L, Overgaard J, Johansen J. Hypothyroidism after primary radiotherapy for head and neck squamous cell carcinoma: normal tissue complication probability modeling with latent time correction. Radiother Oncol 2013; 109:317-22. [PMID: 23891099 DOI: 10.1016/j.radonc.2013.06.029] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 06/17/2013] [Accepted: 06/20/2013] [Indexed: 01/07/2023]
Abstract
BACKGROUND AND PURPOSE To develop a normal tissue complication probability (NTCP) model of radiation-induced biochemical hypothyroidism (HT) after primary radiotherapy for head and neck squamous cell carcinoma (HNSCC) with adjustment for latency and clinical risk factors. PATIENTS AND METHODS Patients with HNSCC receiving definitive radiotherapy with 66-68Gy without surgery were followed up with serial post-treatment thyrotropin (TSH) assessment. HT was defined as TSH >4.0mU/l. Data were analyzed with both a logistic and a mixture model (correcting for latency) to determine risk factors for HT and develop an NTCP model based on mean thyroid dose (MTD) and thyroid volume. RESULTS 203 patients were included. Median follow-up: 25.1months. Five-year estimated risk of HT was 25.6%. In the mixture model, the only independent risk factors for HT were thyroid volume (cm(3)) (OR=0.75 [95% CI: 0.64-0.85], p<0.001) and MTD (Gy) (OR=1.12 [95% CI: 1.07-1.20], p<0.001). From the mixture NTCP-model individual dose constraints for a 25% risk of HT were 26, 38, 48 and 61Gy for thyroid volumes of 10, 15, 20 and 25cm(3), respectively. CONCLUSIONS Comparing the logistic and mixture models demonstrates the importance of latent-time correction in NTCP-modeling. Thyroid dose constraints in treatment planning should be individualized based on thyroid volume.
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Affiliation(s)
- Marianne Feen Rønjom
- Department of Oncology, Odense University Hospital, Denmark; Institute of Clinical Research, University of Southern Denmark, Odense, Denmark.
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A prospective longitudinal study on endocrine dysfunction following treatment of laryngeal or hypopharyngeal carcinoma. Oral Oncol 2013; 49:950-955. [PMID: 23602256 DOI: 10.1016/j.oraloncology.2013.03.450] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 03/19/2013] [Accepted: 03/21/2013] [Indexed: 11/20/2022]
Abstract
OBJECTIVES The incidences of hypo(para)thyroidism were assessed prospectively in 137 consecutive patients with laryngeal (84.7%) or hypopharyngeal (15.3%) carcinoma who were treated with surgery and/or radiotherapy between 2004 and 2006. MATERIAL AND METHODS Laboratory studies were performed in patients before primary or salvage treatment of a laryngeal or hypopharyngeal carcinoma and were repeated 6, 12, 18 and 24months after treatment. All patients were evaluated for the development of hypo(para)thyroidism, and the presence of autoantibodies. The association of hypothyroidism was analyzed against several patient parameters including tumor and treatment characteristics. RESULTS The incidence of hypothyroidism following treatment of laryngeal and hypopharyngeal carcinoma was 47.4%: 27.7% subclinical hypothyroidism and 19.7% clinical hypothyroidism. The median time to develop hypothyroidism was 10months. The incidence of hypoparathyroidism was 7.3%. Univariate analysis showed that patients with laryngectomy, hemithyroidectomy, neck dissection, paratracheal lymph node dissection and radiotherapy had a higher risk of developing hypothyroidism. Multivariate analysis showed laryngectomy, hemithyroidectomy, neck dissection and age to be predictive factors for the development of hypothyroidism. The combination of surgery and radiotherapy increased this risk. Hemithyroidectomy was the most important risk factor. CONCLUSION The incidence rate of hypothyroidism after treatment for laryngeal or hypopharyngeal cancer in this largest prospective study is high (47.4%), especially after combination treatment. Based on the intervals between treatment and the development of hypothyroidism, thyroid testing before treatment, every 3months during the first year, every 6months the second year and annually thereafter is recommended as screening procedure.
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Cella L, Liuzzi R, Conson M, D'Avino V, Salvatore M, Pacelli R. Development of multivariate NTCP models for radiation-induced hypothyroidism: a comparative analysis. Radiat Oncol 2012; 7:224. [PMID: 23270411 PMCID: PMC3573930 DOI: 10.1186/1748-717x-7-224] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Accepted: 12/20/2012] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Hypothyroidism is a frequent late side effect of radiation therapy of the cervical region. Purpose of this work is to develop multivariate normal tissue complication probability (NTCP) models for radiation-induced hypothyroidism (RHT) and to compare them with already existing NTCP models for RHT. METHODS Fifty-three patients treated with sequential chemo-radiotherapy for Hodgkin's lymphoma (HL) were retrospectively reviewed for RHT events. Clinical information along with thyroid gland dose distribution parameters were collected and their correlation to RHT was analyzed by Spearman's rank correlation coefficient (Rs). Multivariate logistic regression method using resampling methods (bootstrapping) was applied to select model order and parameters for NTCP modeling. Model performance was evaluated through the area under the receiver operating characteristic curve (AUC). Models were tested against external published data on RHT and compared with other published NTCP models. RESULTS If we express the thyroid volume exceeding X Gy as a percentage (Vx(%)), a two-variable NTCP model including V30(%) and gender resulted to be the optimal predictive model for RHT (Rs = 0.615, p < 0.001. AUC = 0.87). Conversely, if absolute thyroid volume exceeding X Gy (Vx(cc)) was analyzed, an NTCP model based on 3 variables including V30(cc), thyroid gland volume and gender was selected as the most predictive model (Rs = 0.630, p < 0.001. AUC = 0.85). The three-variable model performs better when tested on an external cohort characterized by large inter-individuals variation in thyroid volumes (AUC = 0.914, 95% CI 0.760-0.984). A comparable performance was found between our model and that proposed in the literature based on thyroid gland mean dose and volume (p = 0.264). CONCLUSIONS The absolute volume of thyroid gland exceeding 30 Gy in combination with thyroid gland volume and gender provide an NTCP model for RHT with improved prediction capability not only within our patient population but also in an external cohort.
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Affiliation(s)
- Laura Cella
- Institute of Biostructures and Bioimaging, National Council of Research (CNR), Naples, Italy.
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Digonnet A, Hamoir M, Andry G, Haigentz M, Takes RP, Silver CE, Hartl DM, Strojan P, Rinaldo A, de Bree R, Dietz A, Grégoire V, Paleri V, Langendijk JA, Vander Poorten V, Hinni ML, Rodrigo JP, Suárez C, Mendenhall WM, Werner JA, Genden EM, Ferlito A. Post-therapeutic surveillance strategies in head and neck squamous cell carcinoma. Eur Arch Otorhinolaryngol 2012; 270:1569-80. [DOI: 10.1007/s00405-012-2172-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2012] [Accepted: 08/15/2012] [Indexed: 12/17/2022]
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Boomsma MJ, Bijl HP, Christianen MEMC, Beetz I, Chouvalova O, Steenbakkers RJHM, van der Laan BFAM, Wolffenbuttel BHR, Oosting SF, Schilstra C, Langendijk JA. A prospective cohort study on radiation-induced hypothyroidism: development of an NTCP model. Int J Radiat Oncol Biol Phys 2012; 84:e351-6. [PMID: 22717243 DOI: 10.1016/j.ijrobp.2012.05.020] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2011] [Revised: 04/22/2012] [Accepted: 05/10/2012] [Indexed: 12/18/2022]
Abstract
PURPOSE To establish a multivariate normal tissue complication probability (NTCP) model for radiation-induced hypothyroidism. METHODS AND MATERIALS The thyroid-stimulating hormone (TSH) level of 105 patients treated with (chemo-) radiation therapy for head-and-neck cancer was prospectively measured during a median follow-up of 2.5 years. Hypothyroidism was defined as elevated serum TSH with decreased or normal free thyroxin (T4). A multivariate logistic regression model with bootstrapping was used to determine the most important prognostic variables for radiation-induced hypothyroidism. RESULTS Thirty-five patients (33%) developed primary hypothyroidism within 2 years after radiation therapy. An NTCP model based on 2 variables, including the mean thyroid gland dose and the thyroid gland volume, was most predictive for radiation-induced hypothyroidism. NTCP values increased with higher mean thyroid gland dose (odds ratio [OR]: 1.064/Gy) and decreased with higher thyroid gland volume (OR: 0.826/cm(3)). Model performance was good with an area under the curve (AUC) of 0.85. CONCLUSIONS This is the first prospective study resulting in an NTCP model for radiation-induced hypothyroidism. The probability of hypothyroidism rises with increasing dose to the thyroid gland, whereas it reduces with increasing thyroid gland volume.
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Affiliation(s)
- Marjolein J Boomsma
- Department of Radiation Oncology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
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75
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Abstract
Hypothyroidism is the result of inadequate production of thyroid hormone or inadequate action of thyroid hormone in target tissues. Primary hypothyroidism is the principal manifestation of hypothyroidism, but other causes include central deficiency of thyrotropin-releasing hormone or thyroid-stimulating hormone (TSH), or consumptive hypothyroidism from excessive inactivation of thyroid hormone. Subclinical hypothyroidism is present when there is elevated TSH but a normal free thyroxine level. Treatment involves oral administration of exogenous synthetic thyroid hormone. This review presents an update on the etiology and types of hypothyroidism, including subclinical disease; drugs and thyroid function; and diagnosis and treatment of hypothyroidism.
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Affiliation(s)
- Jaime P Almandoz
- Mayo School of Graduate Medical Education, College of Medicine, Mayo Clinic, Rochester, MN 55905, USA
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