The tumor is not new, just newly reclassified, and tumors previously diagnosed as the<unk>  encapsulated<unk>  variant of<unk> <unk>  carcinoma will now be classified according to the new terminology. Overall, about 20% of all<unk>  gland "cancers" would now be classified as NIFTP. However, it is important to note that, in Japan specifically, the diagnostic criteria and nomenclature for these tumors has been different, and so the incidence of this tumor type is different. The majority of patients are females (3-4:1 F:M), affecting a wide age range of patients, although most present during the 4th to the 6th decades of life.
Noninvasive follicular thyroid neoplasm with papillary-like nuclear features
Intranodal palisaded myofibroblastoma
Mammary-type myofibroblastoma
Basaloid follicular hamartoma
Melanocytic tumors of uncertain malignant potential
Metastatic insulinoma
Germ cell neoplasia in situ
Solid pseudopapillary tumour