Nuclear CK19-immunopositive pseudoinclusions as a new additional objective diagnostic feature of papillary thyroid carcinoma
One of the key parameters in the diagnosis of papillary thyroid carcinoma (PTC) are true nuclear pseudoinclusions (NPs), which constitute invaginations Hayward Elite Light Parts of the cytoplasm into the nucleus.On the other hand, strong cytoplasmic expression of CK19 is a well-known attribute of PTC tumor cells.We analyzed NPs using CK19 immunohis