A 52-year-old female patient presented with facial injury suspicious for nasal bone fracture. During facial bone computed tomography (CT), a well-circumscribed cystic lesion was discovered incidentally on right side of the mandible (). The patient did not complain of any discomfort, pain, or numbness of the lower face. She also denied any trauma to the chin or significant surgical history.\nLateral radiographs showed a well-defined, radiolucent, ovoid lesion anterior to the right mandibular angle (). The coronal and sagittal CT images demonstrated a deficiency in the mandibular defect containing the soft tissue lesion in continuity with the submandibular gland (). Based on the radiological findings, the patient was diagnosed with a Stafne bone cavity, and regular observation was recommended.
A 45-year-old man referred to the Department of Periodontology, School of Dentistry, Isfahan University of Medical Sciences for routine dental and periodontal examinations. The patient's medical history was not significant. He was not a smoker and revealed no history of trauma or jaw surgery. On extraoral examination, he had a normal appearance. On intraoral examination, the patient had neither any pain nor swelling on the buccal and lingual aspects of the mandible. The radiographic images showed a well-defined unilocular radiolucency below the apices of the left lateral incisor and left canine teeth [].\nFurthermore, deep caries was observed in the left lateral incisor. The clinician suspected a periapical lesion of endodontic origin, but unfortunately, the vitality test of the tooth was not done. To rule out any possible existing pathology in anterior mandible, a diagnostic excision biopsy was planned. The surgical exploration revealed the lingual cortex had been destroyed. Further, the gross examination indicated a soft, relatively firm, brownish, gray mass with granular surface measuring approximately 20 mm × 10 mm × 20 mm. Moreover, histopathologic examination showed a normal salivary gland tissue, with many mucous acini and ducts, which was consistent with normal sublingual gland []. The sections from few other areas revealed inflammatory cells, muscle tissue, fat tissue, blood vessels, and nerve bundles []. Thus, based on the clinical, radiographical, and histopathological findings, the final diagnosis of SBC with ectopic salivary gland tissue was made. Clinical and radiographic controls were performed during 3 months of follow-up. No changes in the zone have been detected.