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Introduction In early-stage oral tongue squamous cell carcinoma (OTSCC), elective neck dissection (END) is recommended when occult lymph node metastasis is suspected; however, there is no unanimous consensus on the risks and benefits of END in such cases. The management of clinically node-negative (cN0) OTSCC remains controversial. This study, therefore, aimed to evaluate the efficacy of END and its impact on the quality of life (QoL) of patients with cN0 OTSCC. Methods and analysis This is a prospective, multicentre, nonrandomised observational study. The choice of whether to perform END at the same time as resection of the primary tumour is based on institutional policy and patient preference. The primary endpoint of this study is 3-year overall survival. The secondary endpoints are 3-year disease-specific survival, 3-year relapse-free survival and the impact on patient QoL. Propensity score-matching analysis will be performed to reduce selection bias. Ethics and dissemination This study was approved by the Clinical Research Review Board of the Nagasaki University. The protocol of this study was registered at the University Hospital Medical Information Network Clinical Trials Registry. The datasets generated during the current study will be available from the corresponding author on reasonable request. The results will be disseminated internationally, through scientific and professional conferences and in peer-reviewed medical journals., BMJ open, 12 (9), art. no. e059615; 2022

It is not uncommon to experience cases of foreign body migration due to trauma in the orofacial region, and the foreign body is removed at the same time as treatment of the injured part. we report a case of a plant foreign body that was difficult to distinguish from a tumor. A 62-year-old man was admitted to our hospital complaining of swelling in the right cheek. A large elastic hard mass on the right outer cheek was palpable. An excision was performed. The excised specimen contained two pieces encapsulated in a fibrous cap. Histopathological findings, the pieces were vegetative foreign body. After confirming the patient's history of facial trauma, he fell down one year ago and had bleeding from the right cheek, but had left it. The diagnosis of vegetative foreign body invasion is characterized by MRI and is considered useful. Postoperative four years, the facial history is good with no facial paralysis.

Currently, many studies are being performed that focus on the efficacy and safety of the vessel sealing system (VSS) in various fields of surgery. However, in the field of oral cancer surgery, the efficacy and safety of VSS use have not been clarified.One hundred and fifty-one patients underwent oral cancer resection and reconstructive surgery. They were divided into two groups: Ligasure vessel sealing system (LVSS) group and conventional surgery (CS) as control. Intra-operative blood loss, operating time, and incidence of post-operative complications and recurrence were analyzed.LVSS use significantly reduced intra-operative blood loss. The operating time was shortened only in mandibular gingiva cancer surgery. There were no differences between the two groups with regard to the incidence of post-operative complications and recurrence.LVSS use was found to be effective and proved to be efficient and safe, and may be useful in oral cancer surgery.