case_images: PMC11104372_01
case_images: Swollen of the hard palate in the midline (arrow).
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case_images: Intra-orally, the mass bulged on the anterior hard palate and there were no pulsation or signs of infection were visible (Figure 1).
case_images: Preoperative nasal endoscopy shows a cystic lesion on the hard palate.
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case_images: During a nasal endoscopy, it was observed that there was swelling in the floor of the left nasal cavity, and the septum was deviated towards the right nasal cavity (Figure 2).
case_images: (A and B) axial and coronal views of CT scan showing a rounded radiolucency on the anterior maxillary wall bulging into the anterior hard palate and left nasal cavity.
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case_images: A computed tomography (CT) scan showed an oval-shaped radiolucent lesion in the midline of the maxilla and bony remodeling, 51mm in size (Figure 3).
case_images: Intraoperative nasal endoscopy. An incision is made in the floor of the left nasal cavity as indicated by the yellow arrow (roof of the NPC), and yellowish, cloudy discharge is drained.
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case_images: The incision was then enlarged and the roof of NDC was removed and sent for histopathology (Figure 4).
case_images: Histopathological examination revealed a cystic lesion lined partially by stratified squamous epithelium (green arrow) and partially by pseudostratified columnar epithelium (black arrow), the cyst wall is composed of fibrous tissue, mucinous glands (grey arrow), cartilaginous tissue (blue arrow), and mixed inflammatory cells (H&E, 4x).
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case_images: The cyst wall is composed of fibrous tissue that has mucinous glands, cartilaginous rests, arteries and veins, and mixed inflammatory cells (Figure 5).