Image of the Week (6)
Amyloid tumour of breast - see below for congo red staining
Note prominent foreign body giant cell reaction to amyloid (amorphous pink-staining material)
This presented as a mass clinically suspicious of carcinoma. 'Mouse over' - for closer view
Positive staining of amyloid protein with congo red.
Note apple-green birefringence under polarised light - ('Mouse over')