Figure 3From: Heterogeneous echogenicity of the underlying thyroid parenchyma: how does this affect the analysis of a thyroid nodule? US finding of a false positive case with underlying heterogeneous thyroid gland. (a) Transverse and (b) longitudinal US showed 7-mm irregular, hypoechoic nodule (arrows) in heterogeneous echogenicity of the underlying thyroid gland in the left thyroid gland. The lesions was diagnosed with adenomatous hyperplasia on fine-needle aspiration biopsy and showed decrease in size on 5Â years follow-up US.Back to article page