Treatment for Recurrent Odontogenic Keratocysts - Exam 74
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by Goddard, Brooks, Lewis, Lewis
Controversy remains in understanding both the development and treatment for the
odontogenic keratocyst (OKC). With recent changes in nomenclature recognizing
the odontogenic keratocyst as a benign tumor, the debate over the proper course of
treatment to limit recurrence and morbidity will continue. This study presents two
cases where conservative treatment failed to prevent recurrence and each patient
underwent resection of aggressive, multicystic OKCs to provide the best chance for definitive care without recurrence and limited morbidity.

Questions:
 1) In 2005, the World Health Organization classified the odontogenic keratocyst as a benign neoplasm under the term keratocystic odontogenic tumor due
to the:
  1. ability to grow rapidly
  2. evidence of intrinsic growth potential
  3. multiple lesions occurring at once
  4. response to treatment with chemotherapy
 2) The mean age group for occurrence of the
odontogenic keratocyst is:
  1. 10 years old
  2. 20 years old
  3. 40 years old
  4. 65 years and older
 3) The most common location for the odontogenic
keratocyst is:
  1. posterior mandible
  2. anterior maxilla
  3. posterior maxilla
  4. anterior mandible
 4) Which of the following statement(s) is true
regarding the odontogenic keratocyst:
  1. The odontogenic keratocyst may present as unilocular or multilocular radiolucencies.
  2. The recurrence rate of odontogenic keratocysts may be related to portions of the lesion left behind after surgery and/or daughter cysts present beyond the visible margins of the lesion.
  3. Expansion of the odontogenic keratocyst typically occurs in an anterior/posterior direction along the marrow space.
  4. All of the above
 5) The following condition(s) is associated with
formation of multiple odontogenic keratocysts:
  1. hereditary hemorrhagic telangiectasia
  2. nevoid basal cell carcinoma (gorlin) syndrome
  3. cleidocranial dysplasia
  4. cherubism