Diagnostic Yield of Needle Evaluation of Surface Masses

Diagnostic Yield

The likelihood that a test or procedure will provide the information needed to establishdiagnosis.


The diagnostic yield of needle evaluation is more than 95%.  It can be as high as 98%.

When one does a needle evaluation, one gets the following information:

  • Whether the mass is solid or cystic or complex
  • Whether pus is obtained or not
  • If the mass is solid, whether it is gritty or not
  • If the mass is solid, the characteristics of the aspirate obtained, whether suggestive of malignancy or not.
  • The biopsy result

The post-needle evaluation diagnosis should be correlated with the biopsy result and the clinical diagnosis.


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