Publications by authors named "Teknos T"

Microvascular free tissue transfer in head and neck surgery has evolved through technological advancements, focusing on enhancing surgical outcomes and reducing complications. The strategic process involves preoperative planning for perforator mapping, intraoperative devices for microvascular anastomoses and patient positioning, and innovative postoperative monitoring techniques ensuring flap viability. This workflow has led to a high flap success rate, although revision surgery can still be necessary.

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Background: Facial paralysis is a life-altering condition that may arise from various etiologies, ranging from trauma to malignancy. Permanent facial paralysis may occur secondary to facial nerve sacrifice or irreversible damage to the nerve. In these particularly devastating cases, protection and maintaining function of the eye is paramount.

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Purpose: To analyze the impact of demographic, clinical, and management variables on time to treatment initiation (TTI) and overall survival (OS).

Study Design: Retrospective chart review.

Materials And Methods: Medical records of patients diagnosed with head and neck cancer from 2018 to 2020 were reviewed.

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Objectives: This study investigates the impact of immediate resection of positive margins on local control of oral tongue cancer.

Materials And Methods: We analyzed 273 consecutive oral tongue cancers resected from 2013 to 2018. Additional resection was performed in cases during the initial operation based on surgeon inspection of the specimen and/or frozen margins.

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Objectives: Laryngeal and hypopharyngeal cancers treated with total laryngectomy (TL) may provide a unique avenue for COVID-19 to infect cancer patients. The objective of this investigation was to identify incidence of COVID-19 infection and potential complications in TL patients.

Materials And Methods: Data was extracted from TriNetX COVID-19 research network from from 2019 to 2021 and ICD-10 codes were utilized to query for laryngeal or hypopharyngeal cancer, and outcomes of interest.

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Objective: To evaluate the reporting and rates of loss to follow-up (LTFU) in head and neck cancer (HNC) randomized controlled trials based in the United States.

Data Sources: Pubmed/MEDLINE, Cochrane, Scopus databases.

Review Methods: A systematic review of titles in Pubmed/MEDLINE, Scopus, and Cochrane Library was performed.

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Head and neck squamous cell carcinoma (HNSCC) outcomes remain stagnant, in part due to a poor understanding of HNSCC biology. The importance of tumor heterogeneity as an independent predictor of outcomes and treatment failure in HNSCC has recently come to light. With this understanding, 3D culture systems, including patient derived organoids (PDO) and organotypic culture (OTC), that capture this heterogeneity may allow for modeling and manipulation of critical subpopulations, such as p-EMT, as well as interactions between cancer cells and immune and stromal cells in the microenvironment.

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Objectives: Examine the relationship between hospital volume and overall mortality in a surgical cohort of head and neck squamous cell carcinoma (HNSCC) patients.

Materials & Methods: A retrospective review of the NCDB was completed for adults with previously untreated HNSCC diagnosed between 2004 and 2016. Mean annual hospital volume was calculated using the number of head and neck cancer cases treated at a given facility divided by the number of years the facility reported to the NCDB.

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Article Synopsis
  • Fibula free flaps (FFF) have traditionally been used for mandibular reconstruction, but scapular system free flaps (SFF) are gaining traction due to their versatility and fewer complications at the donor site.
  • A study reviewed 176 patients who underwent either FFF or SFF reconstructions; operative times were similar, but SFF showed less donor site morbidity.
  • The results indicate that SFF could be a preferred choice for complex mandibular defects, thanks to its quicker harvesting process and reduced complications compared to FFF.
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Background: The incidence of p16+ oropharyngeal squamous cell carcinoma (OPSCC) has been increasing. The notion that p16+ OPSCC has a propensity for atypical and disseminating metastasis has gained traction. We compared treatment failure patterns in p16+ and p16- OPSCC and evaluated survival impact.

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Objective: Recent years have seen increase in individuals pursuing postgraduate fellowships in head and neck (HN) surgery. This has presented concerns about insufficient jobs where graduates can apply their scope of specialized training.

Methods: Data was collected in two manners- a survey and a manual online search of American Head and Neck Society (AHNS) fellowship graduates.

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Objective: Tissue slides from Oral cavity squamous cell carcinoma (OC-SCC), particularly the epithelial regions, hold morphologic features that are both diagnostic and prognostic. Yet, previously developed approaches for automated epithelium segmentation in OC-SCC have not been independently tested in a multi-center setting. In this study, we aimed to investigate the effectiveness and applicability of a convolutional neural network (CNN) model to perform epithelial segmentation using digitized H&E-stained diagnostic slides from OC-SCC patients in a multi-center setting.

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Objective: To analyze the prognostic significance of microscopic vs macroscopic extranodal extension and to assess the impact of chemoradiation on overall survival among patients with oral cavity squamous cell carcinoma and varying degrees of extranodal extension.

Methods: Utilizing the National Cancer Database, we performed a retrospective cohort study of 7975 patients with oral cavity squamous cell carcinoma and varying degrees of extranodal extension who underwent primary surgical intervention. Propensity-score matched models following Cox regression analyses allowed us to assess the impact of adjuvant radiation alone vs adjuvant chemoradiation on overall survival in patients with microscopic extranodal extension and macroscopic extranodal extension.

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Objectives: To identify predictors of overall survival (OS) in oropharyngeal squamous cell carcinoma (OPSCC) patients who achieved complete response (CR).

Methods: We performed a retrospective study of OPSCC patients who achieved CR from a single academic medical center. Associations between OS, AJCC 8th edition staging system, definitive treatment choice, smoking history, and p16 status were assessed.

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Background: To evaluate the relationship between intraoperative ischemia time with acute microvascular free tissue transfer (MFTT) complications in head and neck reconstruction.

Methods: A systematic review using PRISMA guidelines was performed. Inclusion encompassed all available studies published and indexed using PubMed, Medline, and Embase.

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Objectives: Malignant salivary gland tumors are rare neoplasms that are vastly heterogenous in their histological patterns and clinical behaviors. As a consequence, studies have lacked the robust sample sizes needed to define treatment strategies. In this study, we used the National Cancer Database to identify the incidence of occult nodal metastasis and effect on overall survival for the most common malignant salivary gland subtypes.

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Human papillomavirus-associated head and neck squamous cell carcinoma (HPV+ HNSCC) is recognized as a distinct disease with unique etiology and clinical features. Current standard of care therapeutic modalities are identical for HPV+ and HPV- HNSCC and thus, there remains an opportunity to develop innovative pharmacologic approaches to exploit the inherent vulnerabilities of HPV+ HNSCC. In this study, using an inducible HPVE6E7 knockdown system, we found that HPV+ HNSCC cells are addicted to HPVE6E7, such that loss of these viral oncogenes impaired tumorigenicity in vitro and in vivo.

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In head and neck squamous cell carcinoma (HNSCC), anti-PD-1 inhibitors are approved for recurrent/metastatic (R/M) disease and anticipated to expand to other indications. The impact of p16 status and anatomical site on overall survival (OS) in immunotherapy-treated HNSCC patients remains unresolved. We performed a retrospective analysis of R/M HNSCC patients receiving anti-PD-1 immunotherapy at our academic medical center with an extensive community satellite network.

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Background: During the last two decades, significant advancements in the treatment of laryngeal cancer have occurred. Although survival of head and neck cancer patients has improved over time, the temporal trend of laryngeal cancer survival is an area of controversy.

Methods: From 2004 to 2016, 77,527 patients who had laryngeal cancer treated with curative intent in the United States were identified in the National Cancer Database.

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Objective: The objective of this study is to investigate the safety, efficacy, and potential cost-savings of the outpatient parotidectomy procedure.

Methods: This is a retrospective chart review of all patients who underwent a parotidectomy at a large academic center from 2015 through 2019 including demographic data, postoperative complications, drain placement, readmission, and financial cost. A comparison was performed between patients who underwent an outpatient vs inpatient parotidectomy.

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Purpose: Human papilloma virus-positive (HPV+) oropharyngeal squamous cell carcinoma (OPSCC), diagnosed with p16 immunohistochemistry, is associated with favorable prognosis; however, this connection was established using European American (EA)-skewed populations. The impact of p16/human papillomavirus status on outcomes in African American (AA) OPSCC patients remains to be settled. In this study, we determine the association between cancer disparity and p16 status in an OPSCC cohort controlling for time to treatment initiation (TTI), a surrogate for medical care access.

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Background: Patients with human papillomavirus (HPV+) head and neck squamous cell carcinoma (HNSCC) have superior prognoses compared with patients with HPV- HNSCC and strategies for treatment de-escalation are under investigation for the HPV+ setting. However, the survival advantage associated with HPV is not universal, and a subset of patients with HPV+ HNSCC fail definitive treatment and progress with metastatic/recurrent disease. Currently, no biomarker is available to distinguish aggressive from indolent HPV+ HNSCC.

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Objectives/hypothesis: With the increasing emphasis on developing effective telemedicine approaches in Otolaryngology, this study explored whether a single composite image stitched from a digital otoscopy video provides acceptable diagnostic information to make an accurate diagnosis, as compared with that provided by the full video.

Study Design: Diagnostic survey analysis.

Methods: Five Ear, Nose, and Throat (ENT) physicians reviewed the same set of 78 digital otoscope eardrum videos from four eardrum conditions: normal, effusion, retraction, and tympanosclerosis, along with the composite images generated by a SelectStitch method that selectively uses video frames with computer-assisted selection, as well as a Stitch method that incorporates all the video frames.

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Objective: To identify predictors of overall survival (OS) and to stratify patients according to significant prognostic variables.

Methods: A retrospective study of 274 consecutive patients with primary Oral Cavity Squamous Cell Carcinoma. Kaplan-Meier, Cox proportional hazard models, and recursive partitioning analysis (RPA) were used for analysis of OS.

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Objective: Guideline recommendations for the treatment of early-stage glottic cancer are limited to single-modality therapy with surgery or radiation alone. We sought to investigate the clinicopathologic and treatment factors associated with the use of postoperative radiation therapy (PORT) following laser excision for patients with T1-T2N0 glottic squamous cell carcinoma (SCC).

Study Design: Retrospective observational study of the National Cancer Database.

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