Thyroid Carcinoma on the Side of the Absent Lobe in a Patient with Thyroid Hemiagenesis

Figure 3

Tumor histopathology. Although the right thyroid lobe and isthmus were evident, left lobe tissue was absent. Most of the tumor represented papillary carcinoma, with a minority portion comprising poorly differentiated carcinoma. No thyroid tissue was observed in the absent portion. Arrow indicates right side. Hematoxylin and eosin staining, ×1.