BDS10011 Cystic Lesions of Bone: Radiological and Histopathological Features
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Questions and Answers

Which cyst is known for its characteristic soap bubble appearance and scalloping border in radiographic features?

  • Lateral periodontal cyst
  • Calcifying odontogenic cyst
  • Odontogenic keratocyst (correct)
  • Gingival cyst of adult

    • What is the prevalence of odontogenic cysts according to data reported by WHO 2017?

  • 75%
  • 50%
  • 25% (correct)
  • 10%

    • Which cyst is characterized by a cystic cavity showing a corrugated appearance and containing keratin lined by parakeratinized epithelial lining?

  • Gingival cyst of newborn
  • Odontogenic cysts radicular cyst
  • Glandular odontogenic cyst
  • Odontogenic keratocyst (correct)

    • What is the usual clinical presentation of an odontogenic cyst with aggressive clinical behavior and high recurrence rate?

    <p>Occurs in 2nd or 3rd decade of life (A)</p> Signup and view all the answers

    Which cyst is known for growing in an anteroposterior direction without causing bone expansion at first presentation?

    <p>Odontogenic keratocyst (B)</p> Signup and view all the answers

    What are the radiographic features of a dentigerous cyst?

    <p>Unilocular radiolucent area with well-defined borders (D)</p> Signup and view all the answers

    Which cyst is not a type of odontogenic cyst?

    <p>Lateral periodontal cyst (A)</p> Signup and view all the answers

    What is the macroscopic appearance of a lateral periodontal cyst?

    <p>'Corrugated' appearance (B)</p> Signup and view all the answers

    'Retepeg formation' is typically absent in which type of cyst?

    <p>'Odontogenic keratocyst' (C)</p> Signup and view all the answers

    'Loosely attached to underlying C' is a characteristic feature of which type of cyst?

    <p>'Odontogenic keratocyst' (A)</p> Signup and view all the answers

    What is the histopathological feature of an aneurysmal bone cyst?

    <p>Presence of thin connective tissue lining or no lining at all (B)</p> Signup and view all the answers

    Where is a mucous extravasation cyst clinically seen most commonly?

    <p>In the floor of the mouth (D)</p> Signup and view all the answers

    What is the histopathological feature of a ranula?

    <p>Presence of mucin pool surrounded by granulation tissue (A)</p> Signup and view all the answers

    Which cyst is a developmental lesion arising from remnants of the thyroglossal duct?

    <p>Thyroglossal tract cyst (D)</p> Signup and view all the answers

    What is the clinical presentation of dermoid and epidermoid cysts?

    <p>Asymptomatic, soft, fluctuant swelling, appear bluish (A)</p> Signup and view all the answers

    What type of cyst may cause laryngeal obstruction when located at the base of the tongue?

    <p>Thyroglossal tract cyst (B)</p> Signup and view all the answers

    What are the radiographic features of an aneurysmal bone cyst?

    <p>Radiographically, radiolucency, multilocular, marked cortical expansion (D)</p> Signup and view all the answers

    What is the histopathological feature of a mucous retention cyst?

    <p>Presence of thin connective tissue lining or no lining at all (D)</p> Signup and view all the answers

    Which cyst is characterized by the presence of blood-filled spaces surrounded by a fibrous connective tissue?

    <p>Aneurysmal bone cyst (B)</p> Signup and view all the answers

    Where are dermoid and epidermoid cysts most commonly located?

    <p>In the midline of the floor of mouth (D)</p> Signup and view all the answers

    What is the clinical presentation of a mucous retention cyst?

    <p>Mostly in adults, asymptomatic, soft, fluctuant swelling, appear bluish (D)</p> Signup and view all the answers

    What are the complications associated with thyroglossal tract cyst?

    <p>Dysphagia and difficulty in eating and speech (D)</p> Signup and view all the answers

    Which odontogenic cyst is lined by orthokeratinized epithelium and resembles other cysts clinically and radiographically?

    <p>Orthokeratinizing odontogenic cyst (A)</p> Signup and view all the answers

    What is the most appropriate treatment for glandular odontogenic cyst due to its potentially aggressive nature and tendency for recurrence?

    <p>En bloc resection (A)</p> Signup and view all the answers

    Which cyst is most commonly associated with nevoid basal cell carcinoma (Gorlin-Goltz) syndrome?

    <p>Odontogenic keratocyst (C)</p> Signup and view all the answers

    What is the underlying reason for the high recurrence rate of odontogenic keratocysts?

    <p>Loose attachment between epithelium &amp; connective tissue (A)</p> Signup and view all the answers

    Which variant of the calcifying odontogenic cyst is characterized by extraosseous lesions presenting as gingival swellings?

    <p>Cystic variant (B)</p> Signup and view all the answers

    What is the key histopathologic feature of calcifying odontogenic cyst?

    <p>Accumulation of ghost cells (D)</p> Signup and view all the answers

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