Subacute thyroiditis in Hashimoto's thyroiditis which mimicked primary thyroid lymphoma.
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Biopsy, Needle↗
Biomedical subjects
Y Honjho
Publications and source records attributed to Y Honjho.
Warthin's tumor of the parotid gland with extension into the parapharyngeal space.
A case of Warthin's tumor of the parotid gland which extensively extended into the parapharyngeal space is presented. The tumor border against the parotid gland was ill-defined but the border towards the parapharyngeal structures was clear. Solid portions of the tumor appeared hypointense relative to the gland on both unenhanced T1- and T2-weighted MR images without fat suppression, whereas cystic portions appeared hypointense on T2-weighted images and hyperintense on unenhanced T1-weighted images. Pathologic study showed that the ill-defined margin was caused by inflammation and cystic material consisted of highly proteinaceous material. We concluded that the atypical extension into the parapharyngeal space of the tumor was caused by its location in the deep lobe of the parotid gland and its bulky size.
Adenolymphoma↗
[Analysis of proliferating cell nuclear antigen (PCNA) expression in brain tumors].
The expression of PCNA in brain tumor cells was measured in vitro and in situ by using an electrophoretical immunoblotting method and an immunohistochemical staining method. In synchronized C6 rat glioma cells, PCNA were almost parallel to the S phase, although the small amounts of PCNA were expressed in G1 and G2 x M phases. In astrocytic tumors from operative tissues, immunohistochemical PCNA positive rate increased significantly with increasing tumor grade. PCNA positive rate of recurrent meningiomas was also significantly higher than that in nonrecurrent meningiomas. These findings suggest that the PCNA is associated with the cell cycle, especially the S phase and immunohistochemical staining of PCNA is useful to evaluate the proliferating activity of a brain tumor. Immunoblotting method would also be helpful for the exact analysis of proliferating activity in brain tumor cells.
Animals↗