The nasolabial cyst is
a rare non-odontogenic [ extraosseous ] cyst usually develops in the lower
region of the nasal ala . Mostly its etiopathogenesis is uncertain . It is more common in females at about age of forty . The cyst grows
slowly and measures between 1.5 and 3 cm in size It is characterized clinically by a floating structure
in the nasolabial sulcus, which usually elevates the upper lip. It is also
known as nasoalveolar cyst or Klestadt’s cyst . Its
treatment is surgical excision through sublabial incision. Its recurrence is
uncommon after complete removal .
CASE - This is a 43 yrs female patient that presented with
a firm swelling in the right alar region of the nose at nasolabial junction ,
slightly elevating the part of upper lip and nasal ala ; the clinical features suggested
a nasolabial cyst. HRSG scans revealed a
well defined subtle thick and regular walled cystic lesion measuring about 12 x 9 x 11 mm size in the right ala of the nose [ fig 1-2 ]. No internal echos or septa or solid mural
nodule is seen . It is slightly abutting underlying bone .
Fig 1- Slight oblique USG scan of right nasolabial junction showing a well defined rounded cystic mass consistent with nasolabial cyst. No internal echos or septa or solid mural nodule is seen . Its wall is subtle thick & regular.
Fig 2- Orthogonal US scans showing the dimensions of the cyst
PS : The case is intended for
academic purpose .
Ref : 1]
http://radiopaedia.org/articles/nasolabial-cyst
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