Case: 45 year old lady that presented with a painless, progressive breast lump on the left side of 7 months duration.
On examination: A10x10 cms firm, mobile lump involving the entire left breast was palpable. There were dilated veins overlying the lump with no palpable axillary lymphadenopathy.
Mammogram is shown below:
Mammogram was suggestive of an encapsulated lesion with smooth margins, probably a phyllodes tumor.
Tru-cut : Phyllodes tumor
HPE: Benign phyllodes
Learning objective: Benign encapsulated tumor on mammogram suggestive of phyllodes. Capsule is visualized as a radiolucent halo around the lump.
Information provided by:
Consultant, Breast Oncosurgeon
Random Reflections of a Breast Cancer Surgeon 
Is the capsule completely radiolucent or relatively to the lump?
Relative to the lump
The concept of capsule is misleading. Phylloides is not a capsulated lesion . A mammogram “halo effect is due a change in lminance in mammogaphy due t the differences of density and the sourrounding fat.
In my opinion is a well delited lesion with smoth margins. I agree with the DD between Giant FA or Phylloides. Anyone of the lesions had capsule.
If Phylloides is malignant then what will be the changes seen in the mammogram??
Difficult to differentiate a benign and malignant phyllodes by imaging