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Fig. 1 | Thyroid Research

Fig. 1

From: Synchronous lateral lymph node metastases from papillary and follicular thyroid carcinoma: case report and review of the literature

Fig. 1

Histological and immunohistochemical attributes of the synchronous papillary (PTC) and follicular thyroid carcinoma (FTC). All stains are hematoxylin–eosin unless otherwise specified. A The largest focus of the multifocal tall cell variant PTC is shown. Note the eosinophilic, taller-than-wide tumor cells and the “tram-track” appearance of tumor nuclei. B This lesion was positive for BRAF1, the V600 mutation specific antibody. C The 12 mm minimally invasive FTC (miFTC) was characterized by multiple areas with capsular invasion, but lacking angio-invasive features. D High-power magnification of the miFTC reveals monomorphic nuclei lacking PTC related changes

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