PART THREE
Special Techniques in Cytology
F ig . 3 5 .1 5 Fine-needle aspira tio n b io p sy o f breast mass. (A) Loosely cohesive clusters o f m a lig n a n t cells (P apanicolaou x HP). (B) Cell b lo ck p rep a ra tion
h e m a to xylin and eosin section o f tu m o r cells. (C) E -c a d h e rin sh o w in g stro n g m e m b ra n o u s p o sitivity in tu m o r cells, c o n firm in g th e d u cta l o rig in o f th e invasive
ca rcin o m a (LP). (D) P 1 2 0 im m u n o s ta in sh o w in g stro n g m e m b ra n o u s p o sitivity in tu m o r cells, c o n firm in g th e d u c ta l o r ig in o f th e in v a s iv e c a rc in o m a (LP).
F ig . 3 5 .1 6 Fine-needle aspira tio n b io p sy o f axillary ly m p h nod e w ith a h istory o f breast ca rcinom a. (A) M e ta s ta tic b re a s t c a rc in o m a to axillary lym p h
node: single cell patte rn . Cell b lo ck h e m a to xylin and eosin section. (B) M e m b ra n o u s p o sitivity o f E -c a d h e rin in single cells in th e b a ckg ro u n d o f lym phocytes,
c o n firm in g th e d u cta l o rig in o f th e m e ta sta tic carcinom a. (C) P 1 2 0 p o sitivity in tu m o r cells in a m e m b ra n o u s patte rn , c o n firm in g th e d u cta l o rig in o f th e
m e ta sta tic carcinom a.
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