Undifferentiated Malignant Neoplasm Involving Parotid and Thyroid: Sampling and PAX8 Cross-Reactivity Can Obscure the Diagnosis of Lymphoma

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/cripa/volume-2016/3291549/figures/3291549.fig.002a.svgz" name="3291549.fig.002a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Thyroid FNA, 200x magnification, Pap stain</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/cripa/volume-2016/3291549/figures/3291549.fig.002b.svgz" name="3291549.fig.002b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Thyroid FNA, 400x magnification, Pap stain</td></tr><tr class="fig-image" id="c"><td><object data="https://static.hindawi.com/articles/cripa/volume-2016/3291549/figures/3291549.fig.002c.svgz" name="3291549.fig.002c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>Parotid FNA, 400x magnification, DiffQuik stain</td></tr></table>

<div>FNA of thyroid and parotid contained similar cytologic material with malignant cells arranged singly and in dyshesive groups in a necrotic background. A few background Hurthle cells are noted (a).</div>

Case Reports in Pathology

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Figure 2

Figure 2: Undifferentiated Malignant Neoplasm Involving Parotid and Thyroid: Sampling and PAX8 Cross-Reactivity Can Obscure the Diagnosis of Lymphoma 

Figure 2 | Undifferentiated Malignant Neoplasm Involving Parotid and Thyroid: Sampling and PAX8 Cross-Reactivity Can Obscure the Diagnosis of Lymphoma 