PMC7518490_01
Mass arising from the left side of the septum (anteriorly)
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F1
A spur was seen inferiorly toward the right side, and the mass arising from the septum anterior to the inferior turbinate was also noted [Figure 1].
Histopathological examination showing biphasic cellular tumor composed of epithelial cells, few glandular structures, and stellate cells merging in hyalinized areas
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F2
Histological evaluation of the mass showed a biphasic cellular tumor composed of sheets of epithelial cells punctuated by a few glandular structures and stellate cells merging in hyalinized areas [Figure 2].
Immunohistochemistry positive for CK7
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F3
Pan-CK (AE1/AE3), P40, and focally expressed S-100 and smooth muscle actin (SMA) [Figures 3-5]. Proliferation index was 2%-3%.
Immunohistochemistry positive for P40
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F4
Pan-CK (AE1/AE3), P40, and focally expressed S-100 and smooth muscle actin (SMA) [Figures 3-5]. Proliferation index was 2%-3%.
Focally expressed smooth muscle actin
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F5
Pan-CK (AE1/AE3), P40, and focally expressed S-100 and smooth muscle actin (SMA) [Figures 3-5]. Proliferation index was 2%-3%.