Bilateral Parotid Gland Oncocytoma Mimicking Oropharyngeal Cancer Metastasis: A Case Report from a Radiation Oncologist's Perspective.

Background/aim: Parotid oncocytomas typically present as benign, unilateral, slow-growing, painless, and solitary masses that are histologically firm and multilobulated. They are often misdiagnosed as pleomorphic adenomas, hemangiomas, or other forms of oncocytosis. However, in our case, the parotid oncocytomas initially mimicked bilateral parotid gland metastasis of advanced oropharyngeal cancer.

Prediction of risk factors for pharyngo-cutaneous fistula after total laryngectomy using artificial intelligence.

Objectives: Pharyngocutaneous fistula (PCF) is one of the major complications following total laryngectomy (TL). Previous studies about PCF risk factors showed inconsistent results, and artificial intelligence (AI) has not been used. We identified the clinical risk factors for PCF using multiple AI models.

Learning curve and technical nuances of endoscopic skull base reconstruction with nasoseptal flap to control high-flow cerebrospinal fluid leakage: reconstruction after endoscopic skull base surgery other than pituitary surgery.

Purpose: Although reconstruction techniques after endoscopic skull base surgery have been improved, there are difficulties in reconstructing the skull base with a nasoseptal flap (NSF), especially in the case of high-flow cerebrospinal fluid (CSF) leak. The aim of this study was to analyze risk factors for the development of postoperative CSF leaks in terms of less experienced surgeon practices.

Methods: Retrospective review of medical records was performed for 125 patients who underwent endoscopic skull base surgery for intradural pathology with intraoperative high-flow CSF leakage between Oct 2012 and Apr 2017.

Sentinel Lymph Node Biopsy Versus Elective Neck Dissection: Long-Term Oncologic Outcomes in Clinically Node-Negative Tongue Cancer.

Objectives: The aim of this study was to compare the long-term oncologic outcomes of sentinel lymph node biopsy (SLNB) versus elective neck dissection (END) in clinically node-negative (cN0) tongue cancer.

Methods: This was a retrospective cohort study of patients with cN0 tongue cancer from a single institution, including 91 patients in the SLNB group and 120 patients in the END group.

Results: The overall recurrence rate showed no significant difference between the two groups.

Effects of Sequentially Combined Arytenoid Adduction and Injection Laryngoplasty in Patients With Unilateral Vocal Fold Paralysis.

Objectives: Arytenoid adduction (AA) and injection laryngoplasty (IL) are major surgical options for the treatment of unilateral vocal fold paralysis (UVFP). AA is a laryngeal framework surgery and IL is a soft-tissue augmentation procedure. Therefore, the effect of each intervention will not be substitutive but complementary to the other.

Safe surgical tracheostomy during the COVID-19 pandemic: A protocol based on experiences with Middle East Respiratory Syndrome and COVID-19 outbreaks in South Korea.

Background: A subset of patients with COVID-19 require intensive respiratory care and tracheostomy. Several guidelines on tracheostomy procedures and care of tracheostomized patients have been introduced. In addition to these guidelines, further details of the procedure and perioperative care would be helpful.

Additional Injection Laryngoplasty for Patients With Unilateral Vocal Fold Paralysis.

Objectives: In case of insufficient voice improvement after injection laryngoplasty (IL), additional IL will be one of the next option of treatments. However, little is known about the voice outcomes regarding an additional IL.

Study Design: Retrospective comparative study in single institution.

Risk of high-grade malignancy in parotid gland tumors as classified by the Milan System for Reporting Salivary Gland Cytopathology.

Background: The Milan System for Reporting Salivary Gland Cytopathology (Milan System) has previously shown its diagnostic utility by categorizing the seven cytology findings in salivary gland lesions. However, there has been lack of study about the risk of high-grade malignancy in the cytology diagnosis based on the Milan System. Thus, we tried to identify the diagnostic ability of the Milan System for high-grade malignancy and to suggest an improved diagnostic approach for preoperative estimation of high-grade malignancy using the Milan System.

Prognostic Role of Neutrophil-to-Lymphocyte Ratio in Patients with Human Papillomavirus-Positive Oropharyngeal Cancer.

Objective To investigate the prognostic impact of the neutrophil-to-lymphocyte ratio (NLR) for human papillomavirus-positive oropharyngeal cancer (HPV+ OPC). Study Design Retrospective institutional database analysis. Setting Tertiary referral medical center.

Using the nasoseptal flap for reconstruction after endoscopic debridement of radionecrosis in nasopharyngeal carcinoma.

Background: Radionecrosis is a complication of nasopharyngeal carcinoma (NPC) that is difficult to treat. Endoscopic debridement is the first-line treatment for radionecrosis. After debridement, however, either bone or the internal carotid artery is exposed and requires mucosal coverage.

Free flap outcome of salvage surgery compared to primary surgery for head and neck defects: A propensity score analysis.

Objectives: To compare free flap outcomes for head and neck defects between primary surgery and salvage surgery and identify factors affecting the outcomes in the two settings.

Methods: A total of 225 patients (primary group, n=56; salvage group, n=169) were retrospectively identified. The salvage group was previously treated with radiotherapy, chemoradiation, surgery, or any combination of these treatments.

Comparison of Endoscopic Tympanoplasty to Microscopic Tympanoplasty.

Objectives: This study aimed to compare the outcome of endoscopic and microscopic tympanoplasty.

Methods: This was a retrospective comparative study of 73 patients (35 males and 38 females) who underwent type I tympanoplasty at Samsung Medical Center from April to December 2014. The subjects were classified into two groups; endoscopic tympanoplasty (ET, n=25), microscopic tympanoplasty (MT, n=48).

Nasoseptal Flap Elevation in Patients with History of Septal Surgery: Does It Increase Flap Failure or Cerebrospinal Fluid Leakage?

Objective: The nasoseptal flap (NSF) has been shown to be a mainstay in the reconstruction of skull base defects. We evaluated the efficacy and complications of NSF in patients with a history of septal surgery who had the potential risk of tearing and poor vascularity.

Methods: We performed a retrospective chart and video review of patients who underwent NSF for skull base reconstruction between February 2012 and May 2015.