Association of Tinnitus and Other Cochlear Disorders With a History of Migraines
Juen-Haur Hwang, MD, PhD1,2; Shiang-Jiun Tsai3; Tien-Chen Liu, PhD4; et al Yi-Chun Chen, MD2,5; Jen-Tsung Lai, MD6
Author Affiliations Article Information
1Department of Otolaryngology, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Dalin, Chiayi, Taiwan
2School of Medicine, Tzu Chi University, Hualien, Taiwan
3Department of Medical Research, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Dalin, Chiayi, Taiwan
4Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
5Department of Nephrology, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Dalin, Chiayi, Taiwan
6Department of Otolaryngology, Kuang-Tien General Hospital, Shalu, Taichung, Taiwan
JAMA Otolaryngol Head Neck Surg. 2018;144(8):712-717. doi:10.1001/jamaoto.2018.0939
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Comment
Key Points
Question Does a history of migraines increase the risk of tinnitus and other cochlear disorders?
Findings In this cohort study of claims data among patients in Taiwan, 1056 patients with a history of migraines and 4224 controls were identified. The cumulative incidence of cochlear disorders, especially tinnitus, was found to be significantly higher among patients with history of migraines than those without a history of migraines.
Meaning A history of migraines may increase the risk of tinnitus and other cochlear disorders.
Abstract
Importance A headache is a symptom of a migraine, but not all patients with migraine have headaches. It is still unclear whether a migraine might increase the risk of cochlear disorders, even though a migraine does not occur concurrently with cochlear disorders.
Objective To investigate the risk of cochlear disorders for patients with a history of migraines.
Design, Setting, and Participants This study used claims data from the Taiwan Longitudinal Health Insurance Database 2005 to identify 1056 patients with migraines diagnosed between January 1, 1996, and December 31, 2012. A total of 4224 controls were also identified from the same database based on propensity score matching. Statistical analysis was performed from January 23, 1996, to December 28, 2012.
Main Outcomes and Measures The incidence rate of cochlear disorders (tinnitus, sensorineural hearing impairment, and/or sudden deafness) was compared between the cohorts by use of the Kaplan-Meier method. The Cox proportional hazards regression model was also used to examine the association of cochlear disorders with migraines.
Results Of the 1056 patients with migraines, 672 were women and 384 were men, and the mean (SD) age was 36.7 (15.3) years. Compared with the nonmigraine cohort, the crude hazard ratio for cochlear disorders in the migraine cohort was 2.83 (95% CI, 2.01-3.99), and the adjusted hazard ratio was 2.71 (95% CI, 1.86-3.93). The incidence rates of cochlear disorders were 81.4 (95% CI, 81.1-81.8) per 1 million person-years for the migraine cohort and 29.4 (95% CI, 29.2-29.7) per 1 million person-years for the nonmigraine cohort. The cumulative incidence of cochlear disorders in the migraine cohort (12.2%) was significantly higher than that in the matched nonmigraine cohort (5.5%). Subgroup analysis showed that, compared with the nonmigraine cohort, the adjusted hazard ratios in the migraine cohort were 3.30 (95% CI, 2.17-5.00) for tinnitus, 1.03 (95% CI, 0.17-6.41) for sensorineural hearing impairment, and 1.22 (95% CI, 0.53-2.83) for sudden deafness.
Conclusions and Relevance In this population-based study, the risk of cochlear disorders, especially for tinnitus, was found to be significantly higher among patients with a history of migraines. This finding may support the presence and/or concept of "cochlear migraine."
Incidence of Thyroid Cancer Among Children and Young Adults in Fukushima, Japan, Screened With 2 Rounds of Ultrasonography Within 5 Years of the 2011 Fukushima Daiichi Nuclear Power Station Accident
Akira Ohtsuru, MD1,2; Sanae Midorikawa, MD1,2; Tetsuya Ohira, MD2,3; et al Satoru Suzuki, MD2; Hideto Takahashi, PhD2; Michio Murakami, PhD2,4; Hiroki Shimura, MD2,5; Takashi Matsuzuka, MD2,6; Seiji Yasumura, MD2,7; Shin-ichi Suzuki, MD8; Susumu Yokoya, MD9; Yuko Hashimoto, MD10; Akira Sakai, MD2,11; Hitoshi Ohto, MD2; Shunichi Yamashita, MD2,12; Koichi Tanigawa, MD2; Kenji Kamiya, MD2,13
Author Affiliations Article Information
1Department of Radiation Health Management, Fukushima Medical University, Fukushima, Japan
2Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima, Japan
3Department of Epidemiology, Fukushima Medical University, Fukushima, Japan
4Department of Health Risk Communication, Fukushima Medical University, Fukushima, Japan
5Department of Laboratory Medicine, Fukushima Medical University, Fukushima, Japan
6Department of Otolaryngology, Fukushima Medical University, Fukushima, Japan
7Department of Public Health, Fukushima Medical University, Fukushima, Japan
8Department of Thyroid and Endocrinology, Fukushima Medical University, Fukushima, Japan
9Thyroid and Endocrine Center, Fukushima Medical University, Fukushima, Japan
10Department of Pathology, Fukushima Medical University, Fukushima, Japan
11Department of Radiation Life Sciences, Fukushima Medical University, Fukushima, Japan
12Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan
13Research Institute of Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
JAMA Otolaryngol Head Neck Surg. Published online November 29, 2018. doi:10.1001/jamaoto.2018.3121
editorial comment icon Editorial
Comment
Key Points
Question What is the pattern by age group of cancer detection via ultrasonographic screening of the thyroid among children and young adults within 5 years of the 2011 Fukushima Daiichi nuclear power station accident?
Findings In this cohort study of 324 301 children and young adults, thyroid cancer was diagnosed in 187 individuals within 5 years when health effects of radiation were hardly conceivable. The distribution pattern of the incidence rate by age group in second-round examinations increased with older age.
Meaning Large-scale mass screening resulted in the diagnosis of many thyroid cancers even in young age; to avoid overdiagnosis, an improvement in screening strategy based on the understanding of the natural history of thyroid cancer will be urgently needed.
Abstract
Importance Ultrasonographic (US) screening for thyroid cancer was performed in the Fukushima Health Management Survey after the 2011 Fukushima Daiichi nuclear power station accident. Clinical characteristics of thyroid cancers screened by US among children and young adults during the first 5 years after the accident were analyzed.
Objectives To evaluate the number of detected thyroid cancers by age group within 5 years of the Fukushima Daiichi nuclear power station accident and to compare the basic clinical characteristics and demographic patterns in first- and second-round examinations.
Design, Setting, and Participants In this observational study, 324 301 individuals 18 years or younger at the time of accident were included. Patients received a cytologic diagnosis of malignant or suspected malignant thyroid cancer during the first (fiscal years 2011-2013) or second round (fiscal years 2014-2015) of screening. Number of detected cases of cancer was evaluated, correcting for the number of examinees by age group at the time of the accident and for the incidence of detected cancers according to age group at the time of the screening (age groups were divided into 3-year intervals). Results were compared using the age-specific incidence of unscreened cancers from a national cancer registry.
Main Outcomes and Measures Clinical baseline characteristics of the patients and the age-specific number and incidence of thyroid cancers detected during the second round.
Results Among 299 905 individuals screened in the first round (50.5% male; mean [SD] age at screening, 14.9 [2.6] years), malignant or suspected thyroid cancer was diagnosed in 116. Among 271 083 individuals screened in the second round (50.4% male; age at screening, 12.6 [3.2] years), malignant or suspected thyroid cancer was diagnosed in 71. The most common pathologic diagnosis in surgical cases was papillary thyroid cancer (149 of 152 [98.0%]). The distribution pattern by age group at the time of the accident, where the number of detected thyroid cancer cases was corrected by the number of examinees, increased with older age in both screening rounds. This demographic pattern was similar between the first and second examinations. The distribution pattern of the incidence rate by age group at the time of screening in the second round also increased with older age. The incidence rate detected by screening was 29 cases per 100 000 person-years for those aged 15 to 17 years, 48 cases per 100 000 person-years for those aged 18 to 20 years, and 64 cases per 100 000 person-years for those aged 21 to 22 years.
Conclusions and Relevance Large-scale mass US screening of young people resulted in the diagnosis of a number of thyroid cancers, with no major changes in overall characteristics within 5 years of the 2011 Fukushima nuclear power station accident. These results suggest that US screening can identify many detectable cancers from a large pool of nonclinical and subclinical thyroid cancers among individuals of a relatively young age, in an age-dependent manner.