Images and text by Genevieve Carbonatto
A patient presents with a small painful breast lump. This is her ultrasound
The cyst is well circumscribed , is associated with posterior acoustic shadowing and has a number of internal echos suggesting sediment.
Cyst measures I.48 cm X 2.31cm
Discussion
Features of sebaceous cysts on ultrasound (1)
- Located in the skin or subcutaneous tissue
- Small
- Hypoechoic
- Hyperechoic alternating rings may sometimes be seen
- May have a characteristic track seen extending into the skin surface
- May show “flow” on colour Doppler
Ultrasound features of a benign breast lump (2)
- Well defined edges
- lobulated margins (macrolobulation)
- Oval shape
- Thin echogenic pseudocapsule
- Edge attenuation
- Posterior enhancement
- Homogenous internal echo pattern
- Compressibility
References
- Radiopaedia : Breast sebaceous cyst Dr Jeremy Jones and Dr Yuranga Weerakkody ://radiopaedia.org/articles/breast-sebaceous-cyst
- Clinical Ultrasound: Paul Allan, Grant Baxter, Michael Weston