Figure 1

(A) Micro Noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP). This incidental, 5 mm diameter lesion is completely encapsulated. (H&E, 2x). (B) Detail on cells of the micro Noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP). Regarding size and shape, membrane irregularities and chromatin characteristics resulting in a NS of 3. (H&E, 40x). (C) Cytological smear of a Noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP). On the left, magnification of a cell with a pseudoinclusion. On the right, magnification of a cell showing grooves. The final diagnostic class was THY4-suspicious of malignancy. (Papanicolau, 40x). (D) Distribution of the diameters in our Noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP) case series. (E) Comparison between the cytological nuclear score (cNS) and histological nuclear score (hNS).