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Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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Following aspiration of non-bloodstained fluid from a cyst, and given that the lump has disappeared the patient may be reassured.

If however the fluid is blood stained or there remains a residual breast mass, fluid should be sent for cytology, and any breast lump should be assessed with mammography and fine needle aspirate cytology.

1-3% of patients with breast cysts have carcinomas and those with multiple cysts have a slightly increased risk of developing breast carcinoma.

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