CASE: Chronic PE

EXAM QUALITY:

HIGH

1. Can clearly see to the proximal subsegmental level
2. ROI on main PA = 331 HU. (ROI > 300 HU is often high quality if no/minimal limitation.) 
3. LIMITATIONS: None

PE FINDINGS:

CHRONIC PE, right-sided

• RLL lobar level (also see on coronal)
• Thin web-like filling defect is a chronic PE feature
• It is important to look at prior exam to see if present previously. This has decreased since prior CT PE exam performed 3 months earlier (image below):

ANCILLARY FINDINGS:

No sign of RV strain.

IMPRESSION:

Chronic right-sided pulmonary embolism most proximally involving the lobar level in the right lower lobe. No sign of right ventricular strain. RV/LV ratio is < 1, normal.

CREATED BY:

Arun Nachiappan MD, Ali Dhanaliwala MD, Sophia O'Brien MD.

Questions or comments? Please contact narun@upenn.edu