INI-1-Deficient Sinonasal Carcinoma: Case Report with Emphasis on Differential Diagnosis

<div>(a) The neoplastic cells show diffuse immunoreactivity for CK AE1/AE2 (original magnification (×40)). (b) The tumor exhibits complete loss of INI-1 immunostaining (×40). (c) The tumor exhibits complete loss of INI-1 immunostaining with positive control (×200).</div>

Case Reports in Pathology

fig3

Figure 3

Figure 3: INI-1-Deficient Sinonasal Carcinoma: Case Report with Emphasis on Differential Diagnosis 