When is A-scan ultrasonography indicated in the workup of choroidal melanoma?

Updated: Dec 12, 2018
  • Author: Enrique Garcia-Valenzuela, MD, PhD; Chief Editor: Andrew A Dahl, MD, FACS  more...
  • Print
Answer

Answer

A-scan ultrasonography of the eye is useful for tumors thicker than 2-3 mm

Choroidal melanoma characteristically shows an initial prominent spike, followed by low-to-medium internal reflectivity with diminishing amplitude and a significant echo

Vascular pulsations can be seen as fine oscillations of the internal spiking pattern within the tumor

Performing sequential A-scans, with accurate dimension measurements, in cases of diagnostic uncertainty is important


Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!