OKC Radiographic Features — NDEB AFK MCQ
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Correct answer: E — Well-defined, scalloped, unilocular or multilocular radiolucency with corticated borders
Odontogenic keratocyst (OKC, now termed keratocystic odontogenic tumour by WHO 2005, reverted to OKC in WHO 2017) typically presents as a well-defined, unilocular or multilocular radiolucency with scalloped, corticated borders. It often extends along the length of the mandibular body without significant buccolingual expansion (grows anteroposteriorly within the medullary bone). It has a high recurrence rate (25-60%) if treated by simple enucleation. Association with Gorlin syndrome (multiple OKCs, basal cell carcinomas, skeletal anomalies) should be excluded.
Reference: Neville – Oral and Maxillofacial Pathology, 4th ed., 2016