Special Techniques in Cytology
F ig . 3 5 .2 0
peritoneal washing cytology of a 50-year-old woman with
p e r ito n e a l c a rc in o m a to s is .
(A) Hematoxylin and eosin section of cell block shows
monomorphic population of malignant cells with high nuclear grade (Hp). (B)
B e r-E P 4 .
C y to k e r a tin - 7
shows strong membranous staining, an indication
that the tumor is adenocarcinoma and of probable ovarian origin (Hp). (D)
C y to k e r a tin - 2 0
is negative in tumor cells (Hp). (E)
C A -1 2 5
cytoplasmic staining, indicating ovarian origin (Hp).