Incidental Detection of Unilateral Mandibular Bone Thinning Without Clinical Asymmetry in an Adult Female: A Rare Radiographic Finding

Unilateral mandibular thinning is an uncommon radiographic finding, particularly when unaccompanied by facial asymmetry or functional disturbances. This observational report describes the incidental detection of marked unilateral thinning of the mandibular body and ramus in a 40-year-old asymptomatic female during routine panoramic radiography, with no immediate intervention required. Clinical evaluation revealed no facial asymmetry, occlusal discrepancy, or history of trauma, surgery, infection, or systemic disease. Radiographic features suggested a long-standing, non-progressive skeletal variation most consistent with a developmental anomaly, without evidence of cortical breach, expansile remodeling, or destructive pathology. Although cone-beam computed tomography was considered for more detailed assessment, it was deemed unnecessary given the absence of clinical or radiographic indicators of pathology. Recognition of such incidental findings is essential to prevent misdiagnosis and to guide clinical and surgical planning, including implant placement considerations. Periodic radiographic follow-up was recommended to ensure stability of the mandibular architecture.