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Atlas Interpretation:
Interpreted image
Type of Preparation:
ThinPrep/ LBP

Magnification:
Medium

Adequacy Description:
Satisfactory: Borderline Adequate Squamous Cellularity

Cytomorphologic Criteria:
This image depicts the approximate cellular density of an adequate but borderline ThinPrep specimen. It should be used as a guide in assessing squamous cellularity of ThinPrep specimens which are suspected of being of borderline or inadequate cellularity. An adequate liquid based preparation should have an estimated minimum of 5,000 well-visualized/preserved squamous cells. Although this image cannot be compared directly with a full microscopic field, there were slightly over 4 cells average per field at 40X.

Explanatory Notes:
ThinPreps should have this level of cellularity or greater to meet squamous cellularity TBS 2001 criteria. Slides with borderline or low cellularity should be assessed by estimation of average cell number in at least 10 fields along a diameter of the specimen. Laboratories may choose to append a quality indicator statement such as "borderline or low squamous cellularity" when specimens meet minimal criteria, but have only 5,000-20,000 cells.


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