Overall Prevalence Of Hypothyroidism Research Articles

Hypothyroidism in acute coronary syndrome – A prospective Indian study

BackgroundEvidence suggests that hypothyroidism may be associated with an increased risk of acute coronary syndrome (ACS).The data regarding the influence of hypothyroidism on cardiovascular disease in the Asian population is conflicting. Therefore, we undertook this study to assess the overall prevalence of hypothyroidism in Acute Coronary Syndrome (ACS) patients and determine if there is a relationship between hypothyroidism, both sub-clinical and overt and other significant risk factors of ACS in an Indian population. MethodsWe studied 487 hospitalized patients between March 2018 and February 2021 with a diagnosis of ACS to determine the prevalence of hypothyroidism, both clinical and sub-clinical and their relationship with other known coronary risk factors. Thyroid function Tests - free T3, free T4 and TSH were collected from all the patients within 24 h of their admission to the coronary care unit (CCU) of 2 major hospitals in New Delhi and Imphal (Manipur). ResultsSubclinical hypothyroidism was prevalent in 44 (9 %), followed by overt hypothyroidism in 25 (5.2 %).Subclinical hypothyroidism was more common in females, whereas overt hypothyroidism was more common in males. ST Elevation Myocardial Infarction (STEMI) (52 %), followed by Non-ST-Elevation Myocardial Infarction (NSTEMI) (25 %), was the commonest diagnosis at presentation. Patients with overt hypothyroidism showed a higher proportion of increased triglyceride levels.Patients with hypothyroidism had no differences in the prevalence of concomitant diabetes hypertension and other coronary risk factors. ConclusionsPatients with ACS without known thyroid disorders should be screened for hypothyroidism since it is found frequently. There might be a case to treat their thyroid dysfunction appropriately.

Laboratory indicators of hypothyroidism and TgAA-positivity in the Eurasian dog breed.

Hereditary hypothyroidism represents a concern for dog breeders; thus, surveillance programs have been established for several dog breeds. Thyroid profiles (total thyroxine (TT4), thyrotropin (thyroid stimulating hormone (TSH)), and thyroglobulin autoantibodies (TgAA)) collected as part of a breed surveillance program in Eurasians (2009-2017) were retrospectively analyzed. The study included data from 1,501 Eurasians from a German breeding club. Classification was exclusively based on laboratory data. Hypothyroidism was defined as a combined decrease in TT4 and increase in TSH in serum and was classified as TgAA-positive and TgAA-negative hypothyroidism. Thyroglobulin autoantibodies (TgAA) independent of the concentrations of TT4 and TSH were determined. The overall prevalence of hypothyroidism, TgAA-positive hypothyroidism, TgAA-negative hypothyroidism and TgAA-positivity was assessed when the dogs entered the program. Follow-up laboratory data was available for 324 dogs without hypothyroidism on initial examination. The initial screening was performed at a median age of 18 months (interquartile range (IQR): 15-29). The overall prevalence of hypothyroidism was 3.9% (n = 58; 95% CI: 2.9-4.8%) and the prevalence of a positive TgAA status was 7.9% (n = 118; 95% CI: 6.6-9.3%). The prevalence of TgAA-positive and TgAA-negative hypothyroidism was 1.7% (n = 26; 95% CI: 1.1-2.4%) and 2.1% (n = 32; 95% CI: 1.4-2.9%), respectively. 22.0% of dogs with positive TgAA status (26/118) were already hypothyroid on initial examination. Overall, 42.5% (17/40) of TgAA-positive dogs on initial examination developed hypothyroidism on follow-up. The results of this study demonstrate that the Eurasian dog breed exhibits a relevant risk for hypothyroidism and presence of TgAA. The predictive value of TgAA for hypothyroidism or developing hypothyroidism was high in this breed. Further investigations with longitudinal studies in individual dogs are warranted.

Prevalence of Thyroid Problems Among Patients Attending at Siddharthanagar City Hospital

Thyroid gland is vital gland. It produces Thyroxine T3 and Tri-Idothyronine T4 hormones which are needed for the growth and development. Iodine is needed for the formation of T3 and T4 hormones. Iodine is found in different food such as sea food, vegetables produced in Iodine rich soil and table salt. The associated problems of thyroid gland are hypothyroidism and hyperthyroidism. The objective of this study was to find out the prevalence of thyroid problems attending at Siddharthanagar City Hospital.
 It was hospital based retrospective study. Data related to thyroid problems T3,T4 and TSH was collected from hospital laboratory reports . The tests were done using Semi Auto Clia Plate Analyzer of TOSOH India Company.
 The total number of lab reports was 299 taken for study. Among them the percentage of male and female was 21.7 and 78.3 respectively. The overall prevalence of thyroid problems was 5.9% among general public. The overall prevalence of hypothyroidism was 9.69% and hyperthyroidism was 2.17% respectively. The prevalence of thyroid problems was seen more in female.
 This study showed that thyroid problem including hyperthyroidism and hypothyroidism is common. Female population and 21-40 years age group are highly suffered in comparison to male population.

The Overall Prevalence of Hypothyroidism in Children Suffering Chronic Constipation in Shahrekord in 2019

Background and aims: Children with thyroid disorders may be significantly exposed to a higher likelihood of constipation; however, the cause of this link remains unclear. The study aimed to assess the prevalence of hypothyroidism in children suffering from chronic constipation. Methods: This cross-sectional study was conducted on 380 infants over 30 days old with chronic constipation. All participants were asked for thyroid-stimulating hormone (TSH) and free T4 tests. Results: The average age of participants was 64.62±37.28 months. The overall hypothyroidism in the study population was estimated to be 4.2% based on the value of measuring serum TSH and 1.0% based on the value of serum-free T4. Further, abnormal values of both serum biomarkers led to the prevalence rate of 0.02% for hypothyroidism. Conclusion: According to the findings, there was a relationship between hypothyroidism and constipation in children; however, this relationship needs further evaluation.

Prevalence of hypothyroidism in Kannur; a coastal district in Kerala

Background: Hypothyroidism is an emerging health issue in India and worldwide. However, detail data related to the magnitude of the problem is lacking currently. Materials and Methods: A cross-sectional, multicentric study was conducted at four villages in Kannur district of Kerala, to study the prevalence of hypothyroidism among the adult population. Thyroid abnormalities were diagnosed based on laboratory results (free thyroxin [FT4] and thyroid-stimulating hormone [TSH]). Participants with history of hypothyroidism and receiving levothyroxine therapy or those with serum FT4 ≤ 0.78 ng/dL and/or TSH ≥ 4.68 μIU/mL were categorized as hypothyroid. The prevalence of self-reported and undetected hypothyroidism was assessed. Results: A total of 1084 adult male or nonpregnant female participants ≥ 18 years of age were enrolled, of which 508 were evaluated. The overall prevalence of hypothyroidism was 9.6%. 2.1% were already on levothyroxine therapy and is self-reported, whereas 7.48% were previously undetected. Higher proportion of female versus male (8.07 vs. 7.87) was diagnosed with hypothyroidism. Conclusion: The prevalence of hypothyroidism was high, affecting approximately 9.6% of adult in the study population. Female gender (odds ratio = 1.791) were found to have significant association with hypothyroidism.

Viral and other infections in community and primary hypothyroidism – cause or coincidence?

Prevalence of primary hypothyroidism is increasingly keeping close pace with type 2 diabetes mellitus. The overall prevalence of hypothyroidism was 10.95% in India. Following a national strategy of supplementing salt with iodine, the bulk of primary hypothyroidism is now due to autoimmune thyroid

Prevalence of hypothyroidism in patients with type 2 diabetes mellitus and hypertension in India: a cross-sectional observational study.

PurposeTo determine the prevalence of hypothyroidism in patients with type 2 diabetes mel-litus (T2DM), hypertension, and both T2DM and hypertension (T2DM + hypertension) in India.Patients and methodsIn this cross-sectional observational study, adult patients with an established or newly diagnosed T2DM, hypertension, and T2DM + hypertension who were visiting their physicians for a routine clinical checkup were enrolled across 29 sites in India. All the patient-related data were extracted from their medical records. The prevalence of hypothyroidism was evaluated by thyroid function test (levels of serum free thyroxine, free triiodothyronine, and thyroid-stimulating hormone [TSH]). The proportion of obese and overweight hypothyroid patients and dose of thyroxine in overt and subclinical hypothyroidism (SCH) cases (as per TSH values) were assessed during the study. The results were summarized by descriptive statistics.ResultsA total of 1,508 patients (T2DM: 504; hypertension: 501; T2DM + hypertension: 503) were enrolled in the study. The prevalence of hypothyroidism in patients with T2DM, hypertension, and T2DM + hypertension was 24.8%, 33.5%, and 28.9%, respectively. The overall prevalence of hypothyroidism in T2DM (n=1,002) and hypertension (n=1,001) was 26.9% and 31.2%, respectively. The proportion of obese against overweight hypothyroid patients was higher in all indications (T2DM: 16.5% vs 3.4%; hypertension: 23.8% vs 5.4%; T2DM + hypertension: 21.5% vs 3.8%). A considerable proportion of patients with SCH was prescribed thyroxine in T2DM (61.5%), hypertension (61%), and T2DM + hypertension (62.5%) cases. The most commonly prescribed dose (mean) of thyroxine was 50 and 25 µg for overt hypothyroidism and SCH cases, respectively, in all cohorts.ConclusionThere is a high (>20%) prevalence of hypothyroidism in patients with T2DM, hypertension, and T2DM + hypertension. Screening for hypothyroidism should be routinely considered for early diagnosis and effective management.

Prevalence of treated hypothyroidism in the community: Analysis from general practices in North-East England with implications for the United Kingdom.

Hypothyroidism is more frequently diagnosed in women and older individuals. It has been suggested that the prevalence of hypothyroidism and the number of prescriptions for thyroid hormones are increasing. However, despite hypothyroidism being a common medical condition, contemporary data on prevalence, particularly across the various age groups, is limited. Information regarding number of individuals diagnosed with treated hypothyroidism (defined as patients prescribed levothyroxine) across ten General Practices (total population of 66843) in the North-East of England in 2016 was obtained in an anonymized manner. Total as well as age group-specific point prevalence rates were calculated. In addition, corresponding population data for the United Kingdom were acquired, and national total and age-specific hypothyroidism prevalence rates were estimated. The overall prevalence of hypothyroidism in this community sample was 4.5% (n=3004). Prevalence increased across the age groups from 0.1% in children aged 0-10years to 15.1% in those aged more than 90years. After adjusting for demographic differences between the North-East England and UK populations, it is estimated that the total UK-wide prevalence of hypothyroidism in 2016 is 3.6%; affecting more than 2.3 million individuals including nearly 800000 individuals aged >70years. Hypothyroidism affects millions of individuals in the UK and is currently a prevalent diagnosis in more than 1 in 10 individuals aged above 70years. As the population ages this number is likely to increase. The clinical and economic effects of current management strategies for hypothyroidism, particularly in the older population, need to be evaluated.

Prevalence of hypothyroidism in major psychiatric disorders in hospitalised patients in Montserrat Hospital during the period March to October 2010

IntroductionHypothyroidism results from inadequate production of thyroid hormone. It is known that there is a relationship between the major psychiatric disorders and hypothyroidism. ObjectiveTo determine the prevalence of hypothyroidism in patients admitted due to major psychiatric disorders in Montserrat Hospital during the period from March to October 2010. Material and methodsA descriptive cross-sectional study was conducted on 105 patients admitted to Montserrat Hospital with a primary diagnosis of major psychiatric disorder (major depression, bipolar affective disorder, generalised panic disorder, panic disorder, mixed anxiety-depressive disorder, and schizophrenia) in the aforementioned period. Thyroid stimulating hormone (TSH) was performed to assess the evidence of hypothyroidism. ResultsThe overall prevalence of hypothyroidism was found to be 10.5% (95%CI, 5–16%). It was 12.5% in anxiety disorder, 11.1% in depressive disorder, with a lower prevalence of 10.3% for bipolar disorder, and 9.9% for schizophrenia. ConclusionsThe overall prevalence of hypothyroidism was found to be less than in the general population, which is between 4.64% and 18.5%, and hypothyroidism was found in disorders other than depression.

Prevalence of metabolic syndrome in hypothyroidism: Experience in a tertiary center in South India

Introduction: Thyroid disorders are among the most common endocrine disorders, with an overall prevalence of hypothyroidism about 10.95% in the general population. Prevalence of the metabolic syndrome (MetS) in the Indian population is about 31.6%, with the prevalence of 22.9% in men and 39.9% in women. Aim: The aim of this study is to determine the prevalence of MetS and its components in people with hypothyroidism. Materials and Methods: A total of 154 hypothyroid patients attending our outpatient department were consecutively enrolled for the study. MetS identified by National Cholesterol Education Program's Adult Treatment Panel III report (ATP III). Clinical data were obtained by interviewing the patients and referring to their case folders and prescriptions. The anthropometric indices were recorded. The laboratory parameters that were analyzed included fasting lipid profile, thyroid function tests, and fasting blood sugars. Results: The patients were aged between 18 and 75 years, with a mean age of 43.6 years, and the female-to-male ratio was 123:31. The overall prevalence of the MetS was 53.24% by ATP III criteria, which is significantly higher than that in the general population, as reported earlier in various studies. The most common occurring MetS-defining criterion was increased waist circumference, and hypertension was the least documented criterion. Conclusion: MetS occurs in approximately every second patient of hypothyroidism, and so, routine screening for components of MetS may be of benefit in this group.

Prevalencia de hipotiroidismo en trastorno psiquiátrico mayor de pacientes hospitalizados en la Clínica Montserrat en el periodo de marzo a octubre de 2010

IntroductionHypothyroidism results from inadequate production of thyroid hormone. It is known that there is a relationship between the major psychiatric disorders and hypothyroidism. ObjectiveTo determine the prevalence of hypothyroidism in patients admitted due to major psychiatric disorders in Montserrat Hospital during the period from March to October 2010. Material and methodsA descriptive cross-sectional study was conducted on 105 patients admitted to Montserrat Hospital with a primary diagnosis of major psychiatric disorder (major depression, bipolar affective disorder, generalised panic disorder, panic disorder, mixed anxiety-depressive disorder, and schizophrenia) in the aforementioned period. Thyroid Stimulating Hormone (TSH) was performed to assess the evidence of hypothyroidism. ResultsThe overall prevalence of hypothyroidism was found to be 10.5% (95% CI; 5%-16%). It was 12.5% in anxiety disorder, 11.1% in depressive disorder, with a lower prevalence of 10.3% for bipolar disorder, and 9.9% for schizophrenia. ConclusionsThe overall prevalence of hypothyroidism was found to be less than in the general population, which is between 4.64% and 18.5%, and hypothyroidism was found in disorders other than depression.

Hypothyroidism in Pregnancy: A Hospital based cross sectional study

Introduction: Uncontrolled hypothyroidism is associated with serious maternal, fetal, and neonatal morbidity, and mortality. Overt hypothyroidism is defined as a clinical syndrome of hypothyroidism associated with elevated TSH and decreased serum levels of T4 or T3. Subclinical hypothyroidism is defined as a condition without typical symptoms of hypothyroidism, elevated TSH (>5 µU/mL), and normal circulating thyroid hormone. Material & Methods: The present hospital based cross sectional study was conducted in the Department of Obstetrics and Gynaecology, Dr. B. R. Ambedkar Medical College & Hospital, Bangalore. From the outpatient clinics, a total of 200 pregnant women of 1st trimester were selected in the study. Informed consent was taken from the study participants. Complete thyroid profile was done. Results: Mean age was found to be 23.6±2.5 and mean gestational age 8.2±2.6. Among the total study participants (n=200), the overall prevalence of hypothyroidism was 16.5% (n=33). Elevated TSH levels (>5mIU/ml) was found in 16.5% (33) of the study population. With regards to thyroid hormone levels, decreased levels of T3 & T4 were observed in 24.3% (08) and 75.7% (25) had normal levels of T3 & T4. Majority had subclinical hypothyroidism 75.7% (n=25) and 24.3% (n=8) had overt hypothyroidism. Keywords: Pregnancy, Hypothyroidism, Prevalence, Thyroid profile, Subclinical

Prevalence of hypothyroidism in adults: An epidemiological study in eight cities of India

Hypothyroidism is believed to be a common health issue in India, as it is worldwide. However, there is a paucity of data on the prevalence of hypothyroidism in adult population of India.A cross-sectional, multi-centre, epidemiological study was conducted in eight major cities (Bangalore, Chennai, Delhi, Goa, Mumbai, Hyderabad, Ahmedabad and Kolkata) of India to study the prevalence of hypothyroidism among adult population. Thyroid abnormalities were diagnosed on the basis of laboratory results (serum FT3, FT4 and Thyroid Stimulating Hormone [TSH]). Patients with history of hypothyroidism and receiving levothyroxine therapy or those with serum free T4 <0.89 ng/dl and TSH >5.50 μU/ml, were categorized as hypothyroid. The prevalence of self reported and undetected hypothyroidism, and anti-thyroid peroxidase (anti-TPO) antibody positivity was assessed.A total of 5376 adult male or non-pregnant female participants ≥18 years of age were enrolled, of which 5360 (mean age: 46 ± 14.68 years; 53.70% females) were evaluated. The overall prevalence of hypothyroidism was 10.95% (n = 587, 95% CI, 10.11-11.78) of which 7.48% (n = 401) patients self reported the condition, whereas 3.47% (n = 186) were previously undetected. Inland cities showed a higher prevalence of hypothyroidism as compared to coastal cities. A significantly higher (P < 0.05) proportion of females vs. males (15.86% vs 5.02%) and older vs. younger (13.11% vs 7.53%), adults were diagnosed with hypothyroidism. Additionally, 8.02% (n = 430) patients were diagnosed to have subclinical hypothyroidism (normal serum free T4 and TSH >5.50 μIU/ml). Anti - TPO antibodies suggesting autoimmunity were detected in 21.85% (n = 1171) patients.The prevalence of hypothyroidism was high, affecting approximately one in 10 adults in the study population. Female gender and older age were found to have significant association with hypothyroidism. Subclinical hypothyroidism and anti-TPO antibody positivity were the other common observations.

Prevalence of hypothyroidism in adults: An epidemiological study in eight cities of India

Background:Hypothyroidism is believed to be a common health issue in India, as it is worldwide. However, there is a paucity of data on the prevalence of hypothyroidism in adult population of India.Materials and Methods:A cross-sectional, multi-centre, epidemiological study was conducted in eight major cities (Bangalore, Chennai, Delhi, Goa, Mumbai, Hyderabad, Ahmedabad and Kolkata) of India to study the prevalence of hypothyroidism among adult population. Thyroid abnormalities were diagnosed on the basis of laboratory results (serum FT3, FT4 and Thyroid Stimulating Hormone [TSH]). Patients with history of hypothyroidism and receiving levothyroxine therapy or those with serum free T4 <0.89 ng/dl and TSH >5.50 μU/ml, were categorized as hypothyroid. The prevalence of self reported and undetected hypothyroidism, and anti-thyroid peroxidase (anti-TPO) antibody positivity was assessed.Results:A total of 5376 adult male or non-pregnant female participants ≥18 years of age were enrolled, of which 5360 (mean age: 46 ± 14.68 years; 53.70% females) were evaluated. The overall prevalence of hypothyroidism was 10.95% (n = 587, 95% CI, 10.11-11.78) of which 7.48% (n = 401) patients self reported the condition, whereas 3.47% (n = 186) were previously undetected. Inland cities showed a higher prevalence of hypothyroidism as compared to coastal cities. A significantly higher (P < 0.05) proportion of females vs. males (15.86% vs 5.02%) and older vs. younger (13.11% vs 7.53%), adults were diagnosed with hypothyroidism. Additionally, 8.02% (n = 430) patients were diagnosed to have subclinical hypothyroidism (normal serum free T4 and TSH >5.50 μIU/ml). Anti – TPO antibodies suggesting autoimmunity were detected in 21.85% (n = 1171) patients.Conclusion:The prevalence of hypothyroidism was high, affecting approximately one in 10 adults in the study population. Female gender and older age were found to have significant association with hypothyroidism. Subclinical hypothyroidism and anti-TPO antibody positivity were the other common observations.

Prevalence, Associated Risk Factors and Effects of Hypothyroidism in Pregnancy: A Study from North India

Background and Objective: There is a controversy regarding universal versus targeted screening for hypothyroidism during pregnancy. We studied the prevalence and the associated risk factors of hypothyroidism. The secondary objective of the study was to compare the maternal and perinatal outcomes in overt and subclinical hypothyroidism. Methods: We screened 1,005 antenatal patients for hypothyroidism with a thyrotropin assay. Patients diagnosed with hypothyroidism were further tested for anti-thyroid peroxidase antibodies and free thyroxin to determine the cause and type (overt or subclinical) of hypothyroidism. Maternal and perinatal outcomes were compared in the overt, subclinical and euthyroid groups. Results: The overall prevalence of hypothyroidism was 6.3% (overt 2.9% and subclinical 3.4%). Thirty-four (3.4%) new hypothyroid cases could be detected by universal screening. The risk factors for thyroid dysfunction were not significantly different in the screen-positive versus screen-negative patients except for excessive weight gain (p = 0.00). Targeted screening could have missed one third of subclinical hypothyroid cases. Gestational hypertension was significantly greater in the overt hypothyroid group (p = 0.007), and more patients required induction in this group (p = 0.013) but other maternal complications and perinatal outcomes were similar. Conclusion: We recommend universal screening for hypothyroidism in pregnancy in our population, as the prevalence of hypothyroidism is high.

Incidence and Prevalence of Hypothyroidism in Patients Affected by Chronic Heart Failure: Role of Amiodarone

It has been demonstrated that hypothyroidism can lead to significant hemodynamic alterations favoring the onset of chronic heart failure (CHF) as well as its progression. Furthermore, amiodarone, an iodine-containing antiarhythmic drug frequently used in CHF patients, is often the cause of primary hypothyroidism. To define the prevalence and incidence of hypothyroidism in a group of CHF outpatients in stable clinical conditions, with particular reference to the role of amiodarone therapy. Among the 422 enrolled patients (326 males, aged 65±12 years), 51 (12%) had a previous diagnosis of hypothyroidism while 21 (5%) were newly diagnosed at the enrolment. Then, the overall prevalence of hypothyroidism at the first evaluation was 17%and, as expected, it was significantly higher in females than males (33% vs 13%; p < 0.001). During follow-up (median 28 months) hypothyroidism occurred in further 19 patients (incidence rate: 26/1000/year) and it was mainly attributable to amiodarone therapy. Considering all together the hypothyroid patients, either those affected by thyroid failure at the enrolment than those developing hypothyroidism during the follow-up, levothyroxine therapy was continued or started in 69% of them; however, normal serum TSH values were obtained only in 76% of treated cases (mean levothyroxine dose: 69±44 mcg/day). In any case, in the group of patients affected by hypothyroidism a significantly greater occurrence of heart failure progression was observed. Hypothyroidism, especially the subclinical form, frequently occurs in patients affected by CHF receiving amiodarone therapy. Given the unfavorable impact of hypothyroidism on the progression and prognosis of CHF, and the opportunity to adequately manage thyroid failure by means of levothyroxine replacement therapy without the need to withdraw amiodarone, we recommend regular testing of thyroid function in CHF patients, in particular in those submitted to amiodarone therapy, in order to early diagnose a condition of hypothyroidism and titrate substitutive treatment.

Detección de hipotiroidismo en un programa de atención de VIH/SIDA en un hospital de Bogotá, Colombia

The objective of this study was to evaluate the frequency of thyroid function alterations and its associated factors in a group of patients from a university hospital in Colombia.From June 2007 through June 2008, 636 HIV patients were followed in order to assess the relation of thyroid function with the use of HAART.The overall prevalence of hypothyroidism (TSH > 4.6 μUI/mL) was 15.5% (100/636). The association of hypothyroidism in the independent analysis showed significant relation only for the use of nevirapine (RR 1.6; CI 95% 1.1- 2.34) and stavudine (RR 1.5; CI 95%, 1 - 2.3).The prevalence of hypothyroidism was surprisingly high among the studied population.

Mass screening for hypothyroidism in a cohort of HIV infected patients in a Bogotá hospital, Colombia

The objective of this study was to evaluate the frequency of thyroid function alterations and its associated factors in a group of patients from a university hospital in Colombia. From June 2007 through June 2008, 636 HIV patients were followed in order to assess the relation of thyroid function with the use of HAART. The overall prevalence of hypothyroidism (TSH > 4.6 μUI/mL) was 15.5% (100/636). The association of hypothyroidism in the independent analysis showed significant relation only for the use of nevirapine (RR 1.6; CI 95% 1.1- 2.34) and stavudine (RR 1.5; CI 95%, 1 - 2.3). The prevalence of hypothyroidism was surprisingly high among the studied population.

Prevalence of Hypothyroidism in Benign Breast Disorders and Effect of Thyroxine Replacement on the Clinical Outcome

The aim of this study was to determine the prevalence of hypothyroidism in patients with benign breast disorders (BBD). We then asked if thyroxine replacement in hypothyroid patients has any impact on the clinical outcome of the BBD. This prospective study included 201 women with BBD. None of the included patients had previously suspected hypothyroidism. Clinical, laboratory, and follow-up details of the patients were noted. Baseline serum thyroxine, thyroid-stimulating hormone (TSH), and prolactin estimation was done in all cases. Thyroid peroxidase antibody (TPOAb) estimation was done in hypothyroid patients and/or patients with a goiter. In addition to the standard conservative management protocol, hypothyroid patients were given thyroxine replacement therapy. Their response to treatment was assessed at 3-month intervals. The clinical outcomes of euthyroid and hypothyroid groups were compared. The mean age of the patients was 34 +/- 8 years, and the mean length of follow-up was 13.0 +/- 4.2 months. The overall prevalence of hypothyroidism was 23.2% (nipple discharge 37%, mastalgia 23%, lump/lumpiness 17.4%). The rate of hypothyroidism and the mean serum TSH concentration were significantly higher among patients with nipple discharge than among those with mastalgia (P = 0.001) or a lump (P = 0.01). In all, 39% of hypothyroid women had TSH concentrations >10 mIU/l, and 53% had an elevated TPOAb titer. BBD symptoms were alleviated in 83% of the hypothyroid patients with only thyroxine replacement. The final clinical outcomes of hypothyroid patients with nipple discharge and mastalgia were significantly better than that of their euthyroid counterparts (P = 0.028 and 0.001, respectively); no significant difference was noted in patients with lumpiness (P = 0.144). All women with BBD should be screened for hypothyroidism because the prevalence of hypothyroidism is high among this group and correction of hypothyroidism results in significant clinical improvement of BBD in most of these patients.

Hypothyroidism following partial thyroidectomy for thyrotoxicosis and its relationship to thyroid remnant size.

One hundred and twenty-two patients were reviewed 1-7 years after partial thyroidectomy for thyrotoxicosis by two surgeons who had left thyroid remnants of different size. There was no significant difference in the prevalence of hypothyroidism or in the serum levels of thyroxine, tri-iodothyronine or thyroid-stimulating hormone between the two groups of patients. The overall prevalence of hypothyroidism was 16 per cent.