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Silhouette Sign

Aka: Silhouette Sign

Findings
1. Seen on XRay films
2. Loss of normal border between structures
  1. Different radiodensities form border on XRay
3. Appearance of normally invisible outline
Interpretation
1. Suggests infiltrates, fluids or air
2. False positives
  1. Poor film technique (poor penetration or alignment)
  2. Normal anatomic variants

Family Practice Notebook

Patients should address specific medical concerns with their physicians.

Although access to this page is not restricted, the information found here is intended for use by medical providers.

This page was written by Scott Moses, MD, last revised on 10/21/2007 and last published on 2/5/2012.

This is one of 5663 pages in the Family Practice Notebook