Case of the month - November 2006
History:
- 35 year old female - core biopsy reported as 'fibroadenomatoid lesion' (B2)
- suspicious utrasound (U4)
- excision biopsy
Ultrasound scan showing lobulated lesion ~3cm with a poorly defined margin
Grateful thanks to Dr Melanie Smith for permission to use this image

Macro view of poorly circumscribed lobulated 3cm excised mass.
Note fat and occasional small cysts
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Low power view of above lesion
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Medium power view
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Further medium power views
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Medium power view of sclerosing focus
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Medium power view of fibroadenomatoid focus
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- What are the main features in this biopsy?
- What additional stains would you request?
- What is your diagnosis?