Case of the month - March 2007
Special stains
Low power view (x 4) showing high grade DCIS (lower left) and a focus suspicious of invasion in the
centre of the image
'Mouse over' for medium power (x20) view
- note the associated foreign body giant cells and cholesterol clefts 'A'

Medium power view (x 10) of same area as shown above stained for CK5/6.
Red arrow points to apparent breach of basal layer by early invasive carcinoma
while blue arrow points to suspicious invasive focus with absent CK5/6 staining and closely associated foreign body giant cells.
'Mouse over' for detail (x20)
