Malignant cyst left breast

Case contributed by Garth Kruger


A 32 year old recent immigrant presents with a palpable mass at 1 o'clock left breast. No family history of breast malignancy.

Patient Data

Age: 32 years
Gender: Female

A complex cystic structure with a thick mural component. The lesion is poorly defined with no capsule.


This image was taken during aspiration of the cyst. Nore the solid component becomes more prominent.


After aspiration, core biopsy of the solid component was performed.

Case Discussion

This is a complex lesion in the left breast of a young female patient. In no fashion whatsoever is this lesion simple or amenable to follow up. The core biopsy confirms an IDC of the left breast.

The teaching point here is if the lesion is not simple, sampling is always mandatory. There is no place for observing these lesions.

Make sure you are comfortable with the Stavros criteria of simple breast cysts. Apply them in every day practice.

Cf. case number 21370. 

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