ECE2017 Guided Posters Thyroid Cancer (11 abstracts)
1Endocrinology Department, Centro Hospitalar e Universitário do Porto, Porto, Portugal; 2Nuclear Medicine Department, Centro Hospitalar e Universitário do Porto, Porto, Portugal; 3Surgery Department, Centro Hospitalar e Universitário do Porto, Porto, Portugal.
Introduction and Objectives: The incidence of thyroid cancer has increased worldwide. This increase has been attributed to more diagnosed papillary thyroid microcarcinomas. The purpose of this study was to analyse the growing trend of first appointments in our Thyroid Cancer Unit, namely patients with papillary microcarcinomas.
Methods: We performed a retrospective study based on the patients diagnosed with thyroid cancer between 1960 and 2016. We divided these patients into groups, based on the year of first surgical treatment: 1960 to 1996, 1997 to 2001, 2002 to 2006, 2007 to 2011 and 2012 to 2016. We calculated the relative frequency of papillary microcarcinomas comparing to the total cancer diagnostics in each group.
Results: The total count of patients with registered thyroid cancer dimensions was 1146. The mean age was 48.2±15.3 years old. 81.9% were female. We have found that papillary microcarcinoma frequency increased steeply from 11.2% [35/313, 95% confidence interval (CI) 8.215.2%] in 19601996 to 30.9% (42/136, 95% CI 23.739.1%) in 19972001. From that time onwards it stabilised around 1/3 of thyroid cancer cases evaluated 34.0% (54/159, 95% CI 27.141.6) in 20022006; 34,6% (93/269, 95% CI 29.140.4%) in 20072011 and 30.5% (82/269, 95% CI 25.336.2%) in 20122016.
Conclusions: The prevalence of papillary microcarcinomas has increased until the end of the last century. After 2002 our data showed a somewhat stabilised rate of 1/3 of all diagnosed thyroid cancers.