case_images: PMC3335564_01
case_images: A golf-ball-sized swelling on the right maxilla causing facial asymmetry.
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case_images: fig1
case_images: The overlying skin was smooth, intact, and appeared little stretched (Figures 1 and 2).
case_images: Anteroposterior extension of the swelling.
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case_images: fig2
case_images: The overlying skin was smooth, intact, and appeared little stretched (Figures 1 and 2).
case_images: Aspirated material was a red colored, viscous fluid.
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case_images: fig3
case_images: Vitality test gave a positive normal response of the involved teeth (Figure 3).
case_images: IOPA radiograph of maxillary right posterior region showing a partial radiolucency superimposed on the edentulous region.
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case_images: fig4
case_images: There was no evidence of root stump, cystic radiolucency, or any abnormality in relation to the floor of the maxillary sinus (Figure 4).
case_images: Occlusal view shows a circular radiolucency with a thin discontinuous cortication present on the buccal aspect of the maxilla.
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case_images: fig5
case_images: Occlusal radiograph showed a well-defined, unilocular, circular radiolucency present on the buccal aspect of the right maxilla extending from distal aspect of first premolar to distal aspect of third molar surrounded by a thin, discontinuous cortical margin (Figure 5).
case_images: Panoramic view showing a radiolucency with haziness present on the right maxilla, zygomatic arch, anterior wall, and floor of the maxillary sinus were not clearly demarcated.
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case_images: fig6
case_images: Interestingly, all remaining first permanent molars were grossly decayed and associated with well-defined periapical radiolucencies; probably radicular cysts (Figure 6).
case_images: PA Water's view shows haziness with decrease in size of the right maxillary sinus.
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case_images: fig7
case_images: No any abnormality detected in relation to medial, lateral, and superior wall of the sinus (Figure 7). 
case_images: (a, b) CT scan view (coronal section soft tissue window), (c, d) CT scan view (coronal section bone window). Both views show a well defined soft tissue lesion causing displacement of inferolateral wall of the right sinus without involving it.
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case_images: fig8
case_images: It is causing pressure and superior displacement of inferiolateral walls of the maxillary sinus, decreasing the size of the sinus without actual perforation or involvement (Figures 8(a)-8(d)).
case_images: (a, b, c) CT scan view (Axial section soft tissue window), (d, e) CT scan view (Axial section bone window). Both views show a well-defined soft tissue lesion causing displacement of anterolateral wall of the right sinus with involving it.
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case_images: fig9
case_images: There was no any sign of perforation or erosion of respective maxillary bone (Figures 9(a)-9(e)). 
case_images: Surgical enucleation of the lesion through an intraoral approach, photograph after removal of the lesion in toto showing bony concavity on anterolateral wall of the sinus.
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case_images: PMC3335564_01_CRIM.DENTISTRY2012-760571.010.jpg
case_images: fig10
case_images: The surgical enucleation of the cyst was carried out under local anesthesia and strict asepsis through an intraoral approach (Figure 10).
case_images: Sectioned gross specimen shows solidified cheese like material surrounded by a soft capsule.
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case_images: fig11
case_images: The sectioned gross specimen revealed yellowish, solidified pus like material surrounded by a thin-layered soft capsule (Figure 11).
case_images: Histopathological section shows features of residual cyst.
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case_images: fig12
case_images: The histopathological features of atrophic, metaplastic, nonkeratinized, stratified squamous epithelium associated with minimal inflammation confirmed the diagnosis of an established residual cyst (Figure 12).