Unexpected Tumor: Primary Asymptomatic Schwannoma in Thyroid Gland.

The discovery of a tumor as a primary schwannoma in the thyroid gland is rare (Andrion et al. in Virchows Arch 413:367-372, 1988). It represents less than 1 % of mesenchymal neoplasms of this gland.

Cytologic aspect of fibrolamellar hepatocellular carcinoma in fine-needle aspirates.

This is a review of the cytologic and clinicopathological findings seen in a series of six fibrolamellar hepatocellular carcinomas (FL-HCC) studied by means of fine-needle aspiration (FNA). A comparison of several cellular measurements (cell, nuclear and nucleolar sizes, and N/C ratios) of FL-HCC, ordinary hepatocellular carcinoma (O-HCC), and normal hepatocytes was also carried out in order to find out if these figures could be of help in the cytologic diagnosis. Aspirates were made up of a rather monotonous population of large discohesive cells resembling the morphology of the oncocytes seen in thyroid aspirates; trabecular arrangement of tumor cells was not observed.