Abstract
Available studies report conflicting results on the association of body mass index (BMI) and pathohistological features of thyroid cancer. This study aimed to investigate the relationship between BMI and the pathohistological features of different thyroid cancer types. We analyzed the following data from 95 patients with thyroid cancer: age, gender, BMI, pathohistological characteristics of cancer (tumor size, multifocality, lymphovascular invasion, extrathyroidal invasion) and the presence of regional metastases. The BMI of all patients with thyroid cancer was 27.1 ± 4.2. Significantly more patients with obesity class I had cancer size less than 2 cm (p = 0.02). There is a significant association between BMI and extrathyroid invasion (p = 0.03; OR, 1.18), but not with lymphovascular invasion, tumor size, and multifocality. We can conclude that although obesity is a risk factor for the development of thyroid cancer, higher BMI is only partially associated with more aggressive pathohistological features of thyroid cancer.
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