Case Report
Poorly Differentiated Thyroid Carcinoma Arising in Struma Ovarii
Table 1
Comparison of immunohistochemical stain results in the differential diagnoses.
| | | Ovarian strumal lesions | Endometrioid tumor | Sertoli cell tumor | Carcinoid tumor |
| | Cytokeratin 7 | + | + | − | + or − | | Epithelial membrane antigen | + | + | − | + | | Calretinin/inhibin | − | − | + | − | | Thyroglobulin/TTF-1 | + | − | − | − | | Chromogranin/synaptophysin | − | − | − | + |
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