Which statement about the radiographic appearance of idiopathic osteosclerosis is true?

• A. It only appears as a radiolucent area
• B. It can appear as corticated, diffuse, or well-demarcated
• C. It always requires treatment
• D. It is confined to the condyle

Answer: (B)

Idiopathic osteosclerosis is a localized, non-inflammatory increase in bone density seen on radiographs, often discovered incidentally. Because it reflects benign bone remodeling rather than decay, its borders aren’t fixed in appearance. Some lesions show a corticated border, others are well defined, and some blend with surrounding bone giving a more diffuse look. This variability is why it’s true that it can appear corticated, diffuse, or well-demarcated. It isn’t radiolucent, it typically doesn’t require treatment, and it isn’t confined to the condyle (it’s usually in the posterior mandible near molars and premolars).