Type of Preparation:
Direct Smear
Magnification:
High Power Magnification
Interpretation:
Fig. 4.2 Atypia of Undetermined Significance (AUS)
Cytomorphologic Criteria:
Squamous, oncocytic, or other metaplastic changes indefinite for a neoplasm.
In addition, the FNA exhibits an atypical cytomorphologic feature that excludes the possibility of classifying it as “Non-Diagnostic.” Most samples will represent reactive atypia or poorly sampled neoplasms.
Explanatory Notes:
This example exhibits a group of epithelioid cells, indefinite for a neoplasm.
Squamous, oncocytic, or other metaplastic changes indefinite for a neoplasm.
In addition, the FNA exhibits an atypical cytomorphologic feature that excludes the possibility of classifying it as “Non-Diagnostic.” Most samples will represent reactive atypia or poorly sampled neoplasms.