Special Techniques in Cytology
F ig . 3 5 .1 0
A 77-year-old man with
h is to r y o f c o lo n a d e n o c a rc in o m a
presents with multiple hepatic masses. Ultrasound-guided fine-needle aspiration
cytology of the hepatic mass shows (a) moderately cellular aspirates of malignant epithelial cells in the background of necrosis and acute inflammation.
(B and C) Hematoxylin and eosin sections of the cell block. (D)
C y to k e r a tin - 7
is negative in tumor cells. (E)
C y to k e r a tin - 2 0
is strongly positive in tumor cells.
C D X 2
shows strong nuclear positivity and confirms the
m e ta s ta tic c o lo n a d e n o c a rc in o m a .