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©2013 UpToDate ® Print Email Benign macrofollicular thyroid lesion: Findings on fine needle aspirate High-power view of a fine needle aspirate of a thyroid nodule. The follicular cells are small, uniform in size, flat, and noncrowded, with smeared colloid in the background. These findings can be seen in a normal thyroid gland, benign sporadic goiter, or a true benign macrofollicular monoclonal tumor.