Abstract
Thyroid cancers are the most prevalent type of endocrine cancers. Furthermore, the most prevalent type of thyroid cancers is differentiated thyroid cancers, which include follicular and papillary varieties. A combination of two primary cancers within the same thyroid gland is exceedingly rare. The co-occurrence of these tumor forms in the same gland remains a mystery. It is currently acknowledged that, in comparison to either of the tumors developing alone, these tumors should be regarded as more aggressive and carrying a higher chance of recurrence. Although each patient should receive a customized course of care, there are currently no established standards for diagnosis or therapy because there is insufficient data regarding their behavior. We describe a case as well as a review of all cases of papillary carcinoma collision and follicular carcinoma (FTC) in the thyroid that have been documented to date.