Annals of Case Reports and Clinical Studies (ISSN: 2834-5673) | Volume 5, Issue 6 | Review Article | Open Access DOI
Abhinn Miglani*
Upasa Sarma Medhi1, Rafia Ferdousa Islam2, Shilpa S. Pagare3, Agrima Garg4, Shalini Sahoo5, Asad Rehmani6, Abhinn Miglani7*
1Department of Oral and Maxillofacial Surgery, Institute of Dental sciences, Bhubaneswar, Odisha, India
2 Department of Oral and Maxillofacial Surgery, Career Post Graduate Institute of Dental Sciences and Hospital, IIM Road, Ghaila, Lucknow, India
3S.M.B.T Dental College, Nasik, Maharashtra, India
4Department of Oral and Maxillofacial Surgery, J N Kapoor DAV Dental College, Model Town, Yamunanagar, Yamunanagar, Haryana, India
5Department of Public Health Dentistry, Institute of Dental Sciences, Bhubaneswar, Odisha, India
6Department of Oral and Maxillofacial surgery, Career Post Graduate Institute of Dental Sciences and Hospital, IIM Road, Ghaila, Lucknow, Utter Pradesh, India
7Department of Oral and Maxillofacial surgery, Institute Of Dental Sciences, Bhubaneswar, Odisha, India
*Correspondence to: Abhinn Miglani
Fulltext PDFBackground: The American Joint Committee on Cancer (AJCC) staging system has served as the foundation for prognostication, treatment planning, and outcome reporting in head and neck oncology for nearly five decades. Since its first publication in 1977, the AJCC Cancer Staging Manual has evolved from a predominantly anatomical classification system based on tumor size, nodal involvement, and distant metastasis into a more sophisticated prognostic framework incorporating pathological, biological, and disease-specific factors. These developments have significantly influenced surgical decision-making, particularly in oral cavity squamous cell carcinoma (OCSCC), where factors such as depth of invasion (DOI) and extranodal extension (ENE) now directly affect stage grouping and therapeutic recommendations. The introduction of separate staging systems for human papillomavirus (HPV)-associated oropharyngeal squamous cell carcinoma (OPSCC), revisions in nasopharyngeal carcinoma classification, and the transition to AJCC Version 9 represent major milestones in the evolution of head and neck cancer staging.
Objective: To review the historical evolution of AJCC staging for head and neck malignancies from the first edition through Version 9 and to evaluate the implications of these changes for oral and maxillofacial surgery practice.
Methods: A narrative review of the literature was performed using landmark AJCC staging manuals, major head and neck oncology publications, consensus recommendations, and contemporary literature discussing AJCC revisions. Particular emphasis was placed on modifications introduced in the seventh, eighth, and ninth editions because of their direct influence on treatment planning and prognostic assessment.
Results: Early AJCC editions focused primarily on anatomical disease extent, whereas later revisions progressively incorporated prognostically significant pathological and biological variables. The eighth edition introduced DOI into T classification for OCSCC, incorporated ENE into nodal staging, established separate staging systems for HPV-associated OPSCC, and refined classifications for nasopharyngeal and cutaneous head and neck malignancies. AJCC Version 9 has further advanced disease-specific staging through updates to HPV-positive OPSCC, salivary gland malignancies, and nasopharyngeal carcinoma.
Conclusion: The AJCC staging system has evolved from an anatomical framework into a biologically informed prognostic model. These changes have significantly improved risk stratification and influenced surgical planning, neck management, reconstructive strategies, and adjuvant treatment decisions. Understanding the evolution of AJCC staging is essential for oral and maxillofacial surgeons involved in contemporary head and neck cancer care.
AJCC; TNM staging; Oral cavity squamous cell carcinoma; Head and neck cancer; Depth of invasion; Extranodal extension; HPV-associated oropharyngeal carcinoma; Oral and maxillofacial surgery
Upasa Sarma Medhi, Rafia Ferdousa Islam, Shilpa s pagare, Agrima Garg, Shalini Sahoo, Asad Rehmani, Abhinn Miglani. Evolution of AJCC Staging in Head and Neck Cancer: From the First Edition to Version 9 and Its Implications for Head and Neck cancer treatment -A Narrative Review. Ann Case Rep Clin Stud. 2026;5(6):1-8.