Patient presented with painless swelling at left alar base causing disfigurement of face.On palpation swelling was non tender,fluctuant and mobile.It obliterated nasolabial fold and elevated the floor of nose.
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Conventional X-Ray did not show any significant chage in bone. USG revealed well defined cystic lesion with thick internal echoes. Underlying bone appeared normal. CT showed well-demarcated rounded homogenous, low density, non enhancing lesion at nasolabial region. Evidence of scalloping and bone remodelling noted at alveolar margin.
USG is helpful for evaluating lesion contents while CT is helpful in determining extent of lesion .Nasolabial cyst has expansile nature and bone erosion may occur after long time owing to the pressure .Although it is cystic in nature but hyperdense appearance can be due to mucoid content.