Case of the month - January 2007
History:
- 40 year old male - clinically benign lump left breast - present for at least 5 years - core biopsy
Low power view (x 1.25) of core biopsy

H & E x10

Medium power view (x 10) showing bland spindle cells bundles and intervening hyaline collagen bands
'Mouse over' for alternative (x10) view

High power view (x 20) showing detail of stromal element of the lesion

- What are the main features in this biopsy?
- Are there any additional stains that might help you with the diagnosis?
- What is your diagnosis?