Buccinator muscle invasion is a risk factor for cervical lymph node metastasis in squamous cell carcinoma of the buccal mucosa: A retrospective study.

The present study aimed to determine the risk factors associated with cervical lymph node metastasis (CLNM) in patients with buccal mucosa squamous cell carcinoma (BMSCC). This retrospective study included patients with primary BMSCC who underwent surgery at the Department of Oral and Maxillofacial Surgical Oncology of Tokyo Medical and Dental University (Tokyo, Japan) between January 2008 and December 2017. The following data were collected and analyzed: Sex, age, primary lesion subsite, tumor/node/metastasis stage, clinical growth patterns, tumor differentiation, lymphovascular and perineural invasion, mode of invasion, pathological depth of invasion, extent of tumor invasion, and clinical outcome of patients with BMSCC.

Massive low-grade myxoid liposarcoma of the floor of the mouth: A case report and review of literature.

Background: Oral liposarcoma is an extremely rare lesion that is often clinically misdiagnosed as a benign tumor due to its asymptomatic and indolent clinical course. Here, we report a case of massive low-grade myxoid liposarcoma (MLS) of the floor of the mouth.

Case Summary: A 71-year-old man presented with a huge mass in the left floor of the mouth.

Prognostic impact of lingual lymph node metastasis in patients with squamous cell carcinoma of the tongue: a retrospective study.

Squamous cell carcinoma (SCC) of the tongue rarely metastasizes to the lingual lymph nodes (LLNs), which are inconstant nodes and often situated outside the areas of basic tongue tumor surgery. The current study evaluated the clinicopathological features and prognostic impact of LLN metastasis (LLNM), compared to that of cervical lymph node metastasis, in patients with tongue SCC. A total of 608 patients underwent radical surgery for tongue SCC at our department between January 2001 and December 2016.

Comparison of Clinicopathological Characteristics Between the Anterior and Posterior Type of Squamous Cell Carcinoma of the Floor of the Mouth: The Anterior Type Is a Risk Factor for Multiple Primary Cancer.

Background: Floor of the mouth (FOM) squamous cell carcinoma (SCC) accounts for approximately 10% of all oral SCCs. FOM SCC can be classified into the anterior and posterior types according to their site of origin, but few studies have compared these types. This study sought to clarify differences in clinicopathological characteristics between these two types.

Surgical treatment for oral tongue squamous cell carcinoma: A retrospective study of 432 patients.

The incidence of oral cancer in Japan accounts for 1% of all cancers, with oral tongue cancer accounting for 60% of oral cancers based on the subsite. The most common histologic type is squamous cell carcinoma. This study aimed to evaluate the series of surgical treatments for 432 patients with oral tongue squamous cell carcinoma (OTSCC).

Malignant transformation of oral lichen planus: a retrospective study of 565 Japanese patients.

Background: Oral lichen planus (OLP) is a chronic inflammatory oral mucosa disease that is recognized as an oral potentially malignant disorder. However, the potentially malignant nature of OLP remains unclear.

Methods: We designed this study to examine the demographic and clinical characteristics of patients with OLP and evaluate the associated malignant transformation rate.

Risk factors for distant metastasis in locoregionally controlled oral squamous cell carcinoma: a retrospective study.

The control of distant metastasis in oral squamous cell carcinoma is an important determinant of improved prognosis. The study aimed to identify risk factors for distant metastasis in patients with locoregionally controlled oral carcinoma. We identified 982 patients with oral squamous cell carcinoma treated at our hospital between January 2008 and December 2017.

Renal cell carcinoma metastasis to the maxillary bone successfully treated with surgery after vascular embolization: a case report.

Background: Metastasis of renal cell carcinoma to the oral cavity is rare. Renal cell carcinoma metastases are regarded as radioresistant tumors and surgery is recommended. However, since metastatic renal cell carcinoma has poor prognosis and is composed of abundant blood vessels, it is sometimes difficult for clinicians to choose surgical therapy.

Comparison of 50- and 66-Gy total irradiation doses for postoperative cervical treatment of patients with oral squamous cell carcinoma.

Objectives: In patients with advanced oral squamous cell carcinoma (OSCC), surgical treatment is often administered in combination with radiotherapy-based postoperative adjuvant therapy. The aim of the present study was to determine the most appropriate dose by comparing patient outcomes between doses of 50- and 66-Gy for postoperative cervical irradiation.

Materials And Methods: This retrospective study included patients who underwent postoperative cervical irradiation following neck dissection for OSCC with lymph nodes metastases, and their primary lesions were controlled.

Detection of extraoral primary cancers by positron emission tomography/computed tomography in patients with oral squamous cell carcinoma.

Objective: Extraoral primary cancers (EPCs) can appear in patients with oral cancer. This study investigated the use of positron emission tomography/computed tomography (PET/CT) to detect EPCs and to identify characteristics of these cancers. The disease-specific survival rate and the overall survival rate were calculated.

Metastasis of lower gingival squamous cell carcinoma to buccinator lymph node: case report and review of the literature.

Background: Metastasis of oral cancer to the buccinator lymph nodes (BN) is uncommon. The antegrade lymphatic flow in patients with normal anatomy and physiology makes metastasis of lower gingival cancer to BN unlikely.

Case Presentation: A 67-year-old woman presented with a 46 × 25-mm tumor on her lower gingiva, along with metastatic foci in BN and cervical lymph nodes.

Buccinator and Mandibular Node Metastases in Oral Squamous Cell Carcinoma.

Purpose: The buccinator and mandibular nodes belong to the facial lymph node group, and metastasis of oral cancer to these nodes is extremely rare. The purpose of this study was to examine particularly rare metastatic cases in which treatment was administered for the buccinator or mandibular nodes.

Patients And Methods: The authors identified 1,479 cases of oral squamous cell carcinoma treated at their hospital from April 2001 to December 2016.

A lesion categorized between ghost cell odontogenic carcinoma and dentinogenic ghost cell tumor with CTNNB1 mutation.

Ghost cell odontogenic carcinoma (GCOC) is a rare malignant neoplasm characterized by the presence of ghost cells. It is considered to arise either de novo or from a preexisting benign precursor, calcifying odontogenic cyst (COC), or dentinogenic ghost cell tumor (DGCT). We report a case of a 44-year-old Japanese male with a left maxillary tumor.