Immediate Facial Reanimation After Radical Parotidectomy for Malignancy: Oncologic Principles and Reconstructive...

This narrative review examines immediate facial reanimation after radical parotidectomy for malignancy within an integrated oncologic and reconstructive framework; no formal systematic evidence synthesis or meta-analysis was performed. Radical parotidectomy with facial nerve sacrifice remains necessary for a subset of primary parotid malignancies and parotid-region metastatic tumors when safe tumor clearance cannot otherwise be achieved. Facial paralysis in this setting compromises ocular protection, oral competence, speech, social interaction, and long-term quality of life and often coexists with soft-tissue loss, contour deformity, and the need for adjuvant therapy. The available evidence remains dominated by retrospective, technique-heterogeneous studies, limiting firm comparative conclusions. Key decisions include when a functioning nerve should be preserved or sacrificed, how reconstruction should be matched to proximal stump availability, distal target integrity, composite defect burden, and anticipated adjuvant treatment, and which outcomes should guide strategy selection. Current evidence, drawn mainly from retrospective oncologic cohorts and indirect facial-reanimation studies, supports several cautious practical inferences. Pretreatment facial weakness and radiologic or intraoperative evidence of nerve involvement remain important adverse features, but absence of weakness does not exclude neural invasion. When oncologically feasible, immediate reanimation is generally favored because it uses the index exposure, preserves access to distal targets, and minimizes denervation time. Direct repair and interposition grafting remain foundational when both nerve ends are available, but contemporary reconstruction increasingly relies on function-specific combinations, including masseteric nerve transfer, selective reinnervation, temporalis-based procedures, and free functional muscle transfer, to address proximal stump loss, prolonged denervation, and composite defects. Anticipated postoperative radiotherapy should not be treated as a default contraindication to immediate repair. Accordingly, current practice favors individualized, function-oriented reconstruction integrated with oncologic management, while future progress depends on standardized multidomain outcomes and stronger comparative evidence.