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Histopathology of NIFTP, H&E stain. [1]Noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP) is an indolent thyroid tumor that was previously classified as an encapsulated follicular variant of papillary thyroid carcinoma, [2] necessitating a new classification as it was recognized that encapsulated tumors without invasion have an indolent behavior, [2] and may ...
Papillary thyroid cancer (papillary thyroid carcinoma, [1] PTC) is the most common type of thyroid cancer, [2] representing 75 percent to 85 percent of all thyroid cancer cases. [1] It occurs more frequently in women and presents in the 20–55 year age group.
A papillary tumor is a tumor shaped like a small mushroom, with its stem attached to the epithelial layer (inner lining) of an organ. [1] [2] It consists of papillae, which are outgrowths that consist of stroma with at least one central blood vessel, surrounded by epithelium. Usually, the epithelium constitutes the true tumor cells, and the ...
Papillary microcarcinoma is a subset of papillary thyroid cancer defined as a nodule measuring less than or equal to 1 cm. [41] 43% of all thyroid cancers and 50% of new cases of papillary thyroid carcinoma are papillary microcarcinoma.
Thyroid neoplasm is a neoplasm or tumor of the thyroid.It can be a benign tumor such as thyroid adenoma, [1] or it can be a malignant neoplasm (thyroid cancer), such as papillary, follicular, medullary or anaplastic thyroid cancer. [2]
Nuclear grooves (arrows indicate one of them) in papillary thyroid cancer. H&E stain. Cytopathology of papillary thyroid carcinoma, with typical features, with nuclear groove at bottom right. Pap stain. A nuclear groove is an invagination of the nuclear envelope, in the longitudinal axis. [1] It can be present in:
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They cannot be reliably differentiated from low grade papillary urothelial carcinomas using cytology, [1] and their diagnosis (vis-a-vis low grade papillary urothelial carcinoma) has a poor inter-rater reliability. [2] Pathologic grading and staging tumors are: graded by the degree of cellular atypia (G1->G3), and staged: [citation needed ...