This document discusses different types of thyroid cancers including carcinoma follicolare, carcinoma papillifero variante follicolare, and carcinoma papillifero. It also mentions cytological patterns that overlap between conditions like hyperplastic goiter and follicular adenoma. A tiered system is used to classify thyroid cancers from Tir 3 to Tir 5 based on their histological appearance and malignancy risk.