Breast aneurysm

Last revised by Dr Jeremy Jones on 13 Feb 2018

Breast aneurysms are a rarely seen cause of a breast mass.

  • true aneurysm: occurs post trauma and is seen as a slowly enlarging pulsatile mass
  • false aneurysm / pseudoaneurysm: occurs in acute trauma, post percutaneous biopsy, due to spontaneous hemorrhage secondary to coagulopathies or due to malignant vascular invasion

On grey scale ultrasound it may be seen as an anechoic, well-defined cystic structures with moving contents within. Color Doppler may show vascularity with turbulent flow.

May show brilliant contrast enhancement within the lesion, similar to an adjacent vessel.

Management options include:

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