A 66-year-old healthy man was referred from a private dental clinic for evaluation of a multilocular radiolucency at the left molar region of the mandible. Panoramic radiograph revealed a well-defined multilocular radiolucent area under the mandibular canal at the distal root of the second molar tooth (). The lesion showed three lobulated radiolucencies with radiopaque margins in the region of the submandibular gland fossa. On clinical examination, there was no sign of infection, fistula, or nerve damage. No history of expansion on the left mandibular angle area was recorded. The patient had no systemic disease and no specific medical history.\nCBCT scan was recommended for further study. Axial CBCT images showed a lingual bony defect located at the lingual side of the mandibular canal (). Coronal CBCT images showed a lobulated bony defect below the mandibular canal (). The maximum mesiodistal length of the defect was 14.16 mm, and the height was 7.38 mm. The maximum buccolingual length of the defect was 4.44 mm, not showing the expansion or thinning of the buccal cortical bone.\nParasagittal CBCT images showed three lobulated radiolucencies with radiopaque margins between the mandibular canal and the inferior border of the mandible (). Three-dimensional, reformatted CBCT images revealed a bony defect extending from the medial surface of the mandible ().\nThe lesion was diagnosed as a developmental salivary gland defect from the radiographic features. The patient was informed about the lesion and was scheduled for follow-up.
A 35-year-old male patient was similarly referred to Secunderabad Dental Imaging Centre (Hyderabad, India) to undergo routine panoramic radiography. The panorama revealed a cystic cavity on the left side below the second molar and mandibular canal, anterior to the angle of the mandible. () Medical and dental history was not contributory. There was no tenderness on bidigital palpation at the site of the lesion. For further analysis, CBCT restricted to the area of lesion was performed. The results revealed a complete radiolucent lesion that was regular, oval in shape, and well corticated.() The lesion was situated below the mandibular canal and measured 4.7×12.7×16.6 mm (height ×breadth×length).() The long axis of the lesion was situated horizontally in the left side. Cross-sections revealed a mandibular canal within the lesion without any pressure effect.() The patient was asymptomatic and there was no parasthesia or anaesthesia. The buccal wall and the inferior border were intact and there was no expansion (); however, the lingual wall was involved and the inferior border showed some pressure atrophy.\nA radiographic diagnosis of SBC was considered and the patient was recommended for regular follow-up.