1994 Volume 40 Issue 1 Pages 218-220
A static bone defect is detected radiologically as a radiolucent area in the vicinity of the mandibular angle. It can initially be misdiagnosed as a cyst or a benign tumor. However, most such defects are unilateral and feature partial lingual concavity of the mandible.
The case reported herein is an extremely rare occurrence of bilateral static bone defects diagnosed by submandibular gland CT-sialography and CT number. The lingual cortex of the bilateral mandibular angles appeared to have become partially concave because of the submandibular gland tissue within this concavity. Based on several examinations, the defects were diagnosed as acquired bone defects produced by pressure exerted by the peripheral tissues, particularly the submandibular glands.
