Multicenter retrospective study of the prognosis and the effect of postoperative adjuvant therapy in Japanese oral squamous cell carcinoma patients with close margin

Author:

Hasegawa Takumi1ORCID,Kakei Yasumasa1,Yamakawa Nobuhiro2ORCID,Kirita Tadaaki2,Okura Masaya34,Naruse Tomofumi5,Otsuru Mitsunobu5ORCID,Yamada Shin‐ichi67,Kurita Hiroshi6,Hirai Eiji8,Rin Shin9,Ueda Michihiro9,Umeda Masahiro5,Akashi Masaya1ORCID,

Affiliation:

1. Department of Oral and Maxillofacial Surgery Kobe University Graduate School of Medicine Kobe Japan

2. Department of Oral and Maxillofacial Surgery, School of Medicine Nara Medical University Kashihara Japan

3. Department of Oral and Maxillofacial Surgery Saiseikai Matsusaka General Hospital Mie Japan

4. The First Department of Oral and Maxillofacial Surgery, Graduate School of Dentistry Osaka University Osaka Japan

5. Unit of Translational Medicine, Department of Clinical Oral Oncology Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan

6. Department of Dentistry and Oral Surgery Shinshu University School of Medicine Matsumoto Japan

7. Department of Oral and Maxillofacial Surgery Faculty of Medicine, Academic Assembly, University of Toyama Toyama Japan

8. Department of Oral and Maxillofacial Surgery Oita Red Cross Hospital Oita Japan

9. Department of Oral Surgical Oncology Hokkaido Cancer Center Sapporo Japan

Abstract

AbstractBackgroundThe purpose of this retrospective study was to investigate the prognosis of patients with oral cavity cancer with positive margin (PM) or close margin (CM) divided into pN− and pN+ groups.MethodsThe evaluated endpoints were local control and disease‐specific survival (DSS) rates.ResultsHigher T classification, lymphovascular space invasion (LVSI), and older age were significant risk factors for DSS in the pN− groups. On the other hand, extranodal extension, multiple lymph node metastases, and LVSI were significant risk factors for DSS in the pN+ groups. Among the CM pN+ patients, no significant differences in the 3‐year DSS were observed between the only surgery (51.9%) and adjuvant groups (53.2%).ConclusionsHigher T classification and LVSI are high‐risk features more than PM or CM in the pN− groups for DSS. However, further prospective studies are needed to demonstrate the usefulness of adjuvant treatment in patients with PM or CM.

Publisher

Wiley

Subject

Otorhinolaryngology

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