Significance of Duplicated Internal Jugular Vein in neck dissections; a rare Case Report

Introduction: This presentation aims to report an unusually duplicated Internal Jugular Vein that presents a significant surgical difficulty. Case Presentation: A 45-year-old woman diagnosed with squamous cell carcinoma of the lower gingivo-buccal sulcus on her right underwent right modified radical neck dissection type II with reconstruction using pectoralis major myocutaneous flap, followed by broad local excision of the lesion with right Hemi-mandibulectomy. The right side's IJV duplication into the anterior and posterior divisions was discovered during level IV dissection in MRND. After surgery, nothing unusual happened. To avoid iatrogenic harm to IJV during neck dissections, it is helpful to be aware of the many IJV abnormalities. After a contrast-enhanced CT scan, IJV abnormalities are only described in a few cases. Conclusion: When dissecting lymph nodes in MRND, a meticulous anatomical delineation combined with a preoperative evaluation of contrast-enhanced CT images of the face and neck is quite helpful.