IOTW: Pilodinal cyst with echogenic fat

Posted on: November 19, 2018, by :

Pt is a teen with a clinical presentation of a pilonidal cyst with abscess.

It’s interesting because you see the very bright structures in the far field: that’s echogenic fat that can often clump in these collections.

Often we think of hyperechoic structures being bone, but these are not teeth for example since they don’t shadow as bone would.
So thankfully it’s not a teratoma.
The abscess was addressed by surgery and a drain was put in.
“The information in these cases has been changed to protect patient identity and confidentiality. The images are only provided for educational purposes and members agree not to download them, share them, or otherwise use them for any other purpose.”

Carrie Ng

Pediatric Emergency Medicine Attending at Children's National Health System
Carrie was born in San Francisco, but grew up between Hong Kong and Los Angeles. Although she loves the sun, she was excited to move away from home to Philadelphia for medical school, where she explored a new city, learned to appreciate all four seasons, and met her Canadian husband. She then moved to New York City and completed her Pediatrics residency at NYU and PEM fellowship at Columbia. During this time, Carrie developed a passion for bedside ultrasound and decided to join the CNMC faculty while pursuing an Emergency Ultrasound fellowship. In her spare time, Carrie loves traveling, listening to podcasts, and playing board games.

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