PMC6329027_01
Preoperative view showing columellar widening and hypervascularity of the columellar skin.
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On physical examination, she showed partial obstruction of both nostrils due to widening of the nasal columella as well as hypervascularity of the columellar skin (Figure 1).
Contrast-enhanced computed tomography scan showing a heterogeneous soft-tissue mass without contrast enhancement (white arrow) around the anterior nasal spine. ((a): axial and (b): coronal).
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The contrast-enhanced computed tomography (CT) scan revealed heterogeneous soft-tissue density without enhancement in the front of anterior nasal spine and no invasion of the structures surrounding the mass (Figure 2).
Intraoperative view of the tumor after gingivolabial incision was performed, showing a well-encapsulated mass.
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A soft, well-encapsulated mass was observed under mucosa, which showed no adhesions to the surrounding structures (Figure 3).
(a) Histopathologic photomicrograph demonstrating a high density of cellular spindle-shape cells with hyperchromatic nuclei (hematoxylin and eosin, x200) and (b) immunohistochemical stain showing positivity for S-100 protein.
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The Antoni A region was composed of spindle-shape cells with hyperchromatic nuclei (Figure 4(a)). Immunohistochemical staining showed that the tumor was positive for S-100 (Figure 4(b)) but negative for smooth muscle actin.