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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Etiology and significance of the optically clear nucleus.

Papillary thyroid carcinoma (PTC) is diagnosed in both cytology and surgical pathology specimens on the basis of distinct nuclear morphology, characterized by nuclear elongation, chromatin clearing, intranuclear grooves, and inclusions. Although these nuclear features are specific to papillary carcinoma, they can be mimicked in some benign conditions. The majority of PTC cases do not pose diagnostic problems. However, a distinct subset of cases has generated controversy among experts. These cases are follicular patterned tumors that show minimal nuclear changes in PTC. Several investigators have explored the role of immunohistochemical markers in the histologic diagnosis of PTC. Somatic rearrangements of the RET protooncogene are the most frequent genetic abnormality found in PTC. The frequency of these rearrangements has varied according to the geographic region, radiation exposure, and methodologies used and histologic variant of PTC. Recent studies have suggested that RET/PTC may be the cause of this specific nuclear change in PTC; however, the role of RET/PTC in tumor progression still needs to be defined.[1]

References

  1. Etiology and significance of the optically clear nucleus. Baloch, Z.W., LiVolsi, V.A. Endocr. Pathol. (2002) [Pubmed]
 
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