PMC5131229_01
In the CT imaging of the maxillary bone, in both nasal vestibule floors, properly limited hypodense cystic lesions were observed, which were measured to be approximately 2 cm in the left and 1 cm in the right ((a) coronal view, (b) axial view). In the MR imaging performed after the antibiotherapy, at the same location, there were observed properly limited cystic lesions that did not show contrasting and looked hypointense at T1 display and hyperintense at T2 display ((c) coronal view, (d) axial view).
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fig1
The CT scan showed well-bordered hypodense cystic lesions in both sides of the nasal vestibule floor which is about 2 cm in diameter on the left and about 1 cm in diameter on the right side (Figures 1(a) and 1(b)). The MR imaging showed the well-circumscribed cystic lesions that did not show contrasting and looked hypointense at T1 display and hyperintense at T2 display at the same location (Figures 1(c) and 1(d)). The cysts were excised by sublabial approach (Figure 2). The right cyst has fibrotic adhesions due to previous infection, while the boundaries of the cyst in the left could easily be separated from the surrounding structures.
Intraoperative image of the cysts that were excised by sublabial approach. The cyst on the right was reduced in size because it ruptured due to an infection, but the cyst on the left kept narrowing the inferior meatus in the vestibule floor (a, b). In the intraoperative assessment fibrotic adhesions of the cyst on the right due to infection were seen, while the left cyst's borders were seen to be easily separated from the surrounding structures (c, d). After the cysts were totally excised nasal obstruction also passed (e, f).
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fig2
The MR imaging showed the well-circumscribed cystic lesions that did not show contrasting and looked hypointense at T1 display and hyperintense at T2 display at the same location (Figures 1(c) and 1(d)). The cysts were excised by sublabial approach (Figure 2). The right cyst has fibrotic adhesions due to previous infection, while the boundaries of the cyst in the left could easily be separated from the surrounding structures.
Light microscopy appearances of the cyst at 4x (a) and 20x (b) magnification. The cystic wall was lined with pseudostratified columnar epithelium.
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fig3
The wall of the second cyst was lined with pseudostratified columnar epithelium (Figure 3).