S. Woyke et al., PAPILLARY CARCINOMA OF THE THYROID WITH NUMEROUS SPINDLE-SHAPED TUMOR-CELLS IN FINE-NEEDLE ASPIRATION SMEARS, Acta cytologica, 38(2), 1994, pp. 226-230
A papillary carcinoma of the thyroid characterized by numerous spindle
-shaped tumor cells in fine needle aspiration (FNA) smears is reported
. The oval nuclei of the spindle cells, arranged in monolayered sheets
, occasionally showed ''rhythmic,'' palisaded patterns. Comparative st
udy of cytology and histology of this tumor revealed that the spindle
cells observed in FNA smears originated in the epithelium covering the
edematous neoplastic papillae.