Head and Neck-Journal for the Sciences and Specialties of the Head and Neck最新文献

Background: Common treatments for head and neck cancer (radiation and chemotherapy) can lead to dysphagia; tongue exercise is a common intervention. This study aimed to assess swallow biomechanics and bolus kinematics using a well-established rat model of radiation or chemoradiation treatment to the tongue base, with or without tongue exercise intervention.

Methods: Pre- and post-treatment videofluoroscopy was conducted on 32 male Sprague-Dawley rats treated with radiation/chemoradiation and exercise/no exercise. Rats in the exercise groups completed a progressive resistance tongue training paradigm. Swallow biomechanics, bolus kinematics, jaw opening, and post-swallow respiration were assessed.

Results: Both treatments impacted outcome measures; the addition of exercise intervention showed benefit for some measures, particularly in rats treated with radiation, vs. chemoradiation.

Conclusions: Radiation and chemoradiation can significantly affect aspects of deglutition; combined treatment may result in worse outcomes. Tongue exercise intervention can mitigate deficits; more intensive intervention may be warranted in proportion to combined treatment.

Background: Papillary thyroid carcinoma (PTC) accounts for about 85% of thyroid cancer cases. Transmembrane protein 252 (TMEM252) is a gene encoding a transmembrane protein that has only been reported to be associated with triple-negative breast cancer. Herein, we first elucidated the physiological roles and possible regulatory proteins of TMEM252 in PTC pathogenesis.

Methods: Quantitative real-time polymerase chain reaction, western blot, and immunohistochemical analyses were utilized to ascertain the relative TMEM252 expression in PTC and surrounding normal tissues. Functional investigations involved CCK-8 viability assay, EdU incorporation assay for proliferation, transwell assays for migration and invasion, and an in vivo tumor development assessment to evaluate the TMEM252-mediated regulation of tumor formation.

Results: Our results first revealed diminished TMEM252 transcript and protein expressions in PTC tissues and cell lines. TMEM252 overexpression suppressed cell proliferation through reducing p53, p21, and p16 expression. Conversely, TMEM252 depletion has opposite effects in PTC cells both in vivo. Additionally, the upregulation of TMEM252 demonstrated cell migration and invasion suppression by impeding the epithelial-mesenchymal transition (EMT) process via inhibition of the Notch pathway. Furthermore, overexpression of TMEM252 suppressed tumor growth in vivo.

Conclusion: Our study elucidates that TMEM252 suppresses PTC progression by modulating the Notch pathway. These findings underscore TMEM252 is a potential therapeutic target in managing PTC.

Background: The palliative care (PC) needs of patients with head and neck cancer (HNC) are complex, due to high and unique symptom burdens. Uniform outcome measures are critical to assessing the impact of PC interventions in HNC.

Methods: A scoping review of outcome measures used in patients with HNC receiving PC was performed using PubMed, Embase, and Web of Science from 1980 to 2022.

Results: Of 20 eligible studies, 19 unique instruments were identified which assessed 22 physical, 5 mental, 4 social, 7 related quality of life, and 9 advanced care planning outcomes. Instruments were underutilized, with a larger number of outcomes measurable for instruments used than were reported. The average instrument assessed three domains whereas the average study only reported outcomes from two domains.

Conclusions: Comparison across studies is limited due to heterogeneity in outcome measures. Future work is needed to develop core PC outcome measures for use in HNC care.

Background: The presence of a pseudodiverticulum of the anterior pharyngeal wall, or prominent "pharyngeal bar," is a well-known phenomenon that occurs following total laryngectomy, which can be visualized by nasolaryngoscopy or videofluoroscopy. Among the different techniques of pharyngeal reconstruction, there is higher incidence following primary vertical multilayered closure. It has been postulated to cause dysphagia and lack of dietary progression despite a paucity of data. However, the direct impact of pseudodiverticulum is less clear and anecdotally its presence and severity does not necessarily correlate with dysphagia.

Methods: A retrospective case series was performed of all consecutive patients who underwent total laryngectomy or laryngopharyngectomy between 2015 and 2022 at two tertiary head and neck institutions. All patients underwent routine videofluoroscopy postoperatively for swallow assessment. The presence of pseudodiverticulum on postoperative contrast swallow study was recorded to investigate the relationship with patient's ability to tolerate oral intake at 3 months discharge from the hospital.

Results: Of 50 laryngectomized patients (mean age 63.8 ± 10.0, 86% male), the main closure techniques were primary vertical (n = 9, 18%), primary T-closure (n = 14, 28%), and flap reconstruction (n = 27, 54%). Pseudodiverticulum was identified in 19 cases (38%). 43 patients underwent primary surgery and 30 had adjuvant radiotherapy. The presence of pseudodiverticulum was significantly associated with vertical primary closure versus non-vertical (T-closure or flap reconstruction) techniques (χ² (df 1) = 7.4, p = 0.007, OR = 5.7, 95% CI 1.3-24.7). Pseudodiverticulum was not associated with an increased inability to tolerate solid intake or full diet compared to patients without pseudodiverticulum. 26.3% of patients with pseudodiverticulum were on full diet compared to 25.8% of patients without. The vertical closure technique showed no difference in ability to maintain solid intake compared with non-vertical closure; however, no patients were on full diet. Only one patient in the pseudodiverticulum group required surgical management during the study period for retention.

Conclusion: The presence of a pseudodiverticulum does not appear to be significantly associated with a need for postoperative dietary modification. The authors postulate that postlaryngectomy dysphagia is multifactorial with sensorimotor aperistalsis of the pharynx and cricopharyngeal stenosis. While a pseudodiverticulum is a common phenomenon, patients did not require modification of diet at higher rates than those without, and they seldom require intervention.

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. There are many effective lagophthalmos corrective surgical procedures available for these patients. While placement of eyelid weights and lid tightening surgeries are the cornerstone of eyelid rehabilitation, limited information exists on whether the timing of eyelid interventions in the setting of permanent facial paralysis impact outcomes, including need for revision surgery.

Methods: A single-center retrospective chart review was performed for patients with irreversible facial paralysis treated with an upper eyelid weight between 2013 to 2022. Electronic health records were acquired to obtain facial paralysis etiology, associated clinical characteristics, the type of intervention, and the timing of intervention. Patients were classified as immediate if the eyelid weight operation occurred within 29 days of the initial facial paralysis and delayed if the surgery occurred 30 days or more after initial presentation. Outcomes were assessed in terms of revision procedures and surgical complications.

Results: There were 70 patients in total, with 35 patients in the immediate category and 35 patients in the delayed category. The most common etiology related to parotid gland pathology, and 58.6% of patients had facial paralysis from cancer-related surgeries. There were no significant differences in revision rates (p < 0.208) or in the types of procedures (p = 0.077) between the two groups. The complication rates also did not differ significantly between groups; however, there were only complications in the delayed intervention group.

Conclusions: These findings suggest there is no difference in postoperative complications between groups, including the need for revision surgeries when comparing groups with immediate or delayed intervention. Thus, treatment plans should be customized based on patient and provider preferences.

Purpose: Head and neck cancer cells commonly express programmed death ligand 1 (PD-L1) and epidermal growth factor receptor (EGFR), both of which play pivotal roles in the antitumor cellular immune response. Pembrolizumab, a PD-1 inhibitor, and cetuximab, an EGFR inhibitor, are typically effective agents combined with neoadjuvant platinum-based chemotherapy for the treatment of head and neck squamous cell carcinoma (HNSCC). This study aims to evaluate the efficacy and safety of neoadjuvant immunochemotherapy in patients with HNSCC.

Methods: Patients with HNSCC underwent radical surgery and complete cervical lymph node dissection following neoadjuvant immunochemotherapy at RenJi Hospital from January 2021 to June 2024 were retrospectively analyzed. The primary endpoint was major pathological response (MPR). We further explored the relationship between the efficacy and immune estimators.

Findings: Twenty-one patients were enrolled in this retrospective study. The MPR was 66.7%, including 11 patients who achieved a pathological complete response (pCR). The overall response rate (ORR) was 90.5%, and the complete response (CR) rate was 28.6%. The oropharynx, as the primary site, was the sensitive tumor type to neoadjuvant immunochemotherapy. The most common adverse event (AEs) was anemia (61.9%). No grade 4 AE or delayed surgery was reported. Laryngeal preservation rates were 90.9% (10/11), and pathological findings confirmed negative surgical margins for all patients. Moreover, pre-treatment peripheral lymphocyte count, monocyte count, and platelet to lymphocyte ratio (PLR) displayed a significant correlation with the treatment response.

Conclusion: Pembrolizumab plus cetuximab with chemotherapy for patients with HNSCC is a feasible and safe clinical protocol fulfilling organ preservation and life quality improvement. Pre-treatment peripheral immune estimators could help to screen patients who may respond to the neoadjuvant immunochemotherapy.

Background: Malnutrition is a major consequence of head and neck cancer (HNC), often leading to decreased skeletal muscle mass and impacting survival. The goal of this study is to determine the effect of sarcopenia, as defined by skeletal muscle index (SMI), on survival in patients with HNC.

Methods: This is a retrospective review of patients with HNC treated with surgery and/or radiation at a single tertiary care institute. All had pre-treatment imaging available for skeletal muscle index (SMI) measurements, and SMI was calculated at the level of the 3rd cervical vertebra. Sarcopenia was defined as an SMI < 41 cm²/m² in females and as <43 cm²/m² in underweight or healthy weight males. Sarcopenia was defined as <53 cm²/m² in overweight or obese males. Chi-square analysis was performed to compare recurrence and survival rates, and survival analysis was performed via Kaplan-Meir curve.

Results: Hundred and twelve patients with HNC were evaluated, 84 men and 28 women with an average age of 60.9 years. Tumors were primarily located in the oral cavity (24.1%) and oropharynx (42%). The majority (69.6%) underwent surgery. Mean body mass index prior to treatment was 28. Sixty-nine patients (61.6%) in our cohort had low SMI. Mean follow-up was 3.9 ± 2.2 years. Recurrence rate was 26% in those with low SMI versus 2% in those without. Patients with low SMI were more likely to have a recurrence (p = 0.02). Overall survival was 72.5% in those with low SMI and 81% in those with normal SMI (p = 0.09).

Conclusions: Defining sarcopenia as a low skeletal muscle index at the third cervical vertebra is clinically relevant. This study demonstrates that low SMI at this level, and thus sarcopenia, was strongly associated with higher rates of recurrence.

Background: Laryngeal chondroradionecrosis (LCRN) is a rare but severe complication of radiation therapy. The study aimed to review the management of LCRN and evaluate the clinical benefit of hyperbaric oxygen therapy (HBOT).

Methods: We retrospectively analyzed all radiation-induced LCRN patients between 2006 and 2019 at a tertiary medical center. Diagnosis was based on signs and symptoms of Chandler's classification, imaging, and/or histopathology report. The primary outcome was improvement in Chandler's grade after HBOT.

Results: Of 678 irradiated laryngeal cancer patients, 29 (4.3%) were diagnosed with LCRN. The most common primary management was tracheostomy with intravenous steroids and antibiotics (59%). Ten patients received HBOT (34.5%), and six underwent total laryngectomy (21%). In HBOT-treated patients, Chandler's grade significantly improved from a median of 4 (range 2-4) to 2.5 (range 1-4; p = 0.005).

Conclusions: HBOT may benefit in the management of patients with persistence and unresponsive symptoms of LCRN following radiation therapy for laryngeal SCC.

As the indications for endoscopic skull base approaches have increased, so has the need for more versatile vascularized flaps for skull base reconstruction. Here, we describe a novel lateral based nasopharyngeal flap (LNPF). Two cadaver heads were dissected to elucidate flap anatomy, dimensions, and technique. A retrospective review was performed on two cases where LNPF was used to repair CSF leaks in the nasopharyngeal area, and outcomes reported. The LNPF is an ascending pharyngeal artery myomucosal flap that includes the nasopharyngeal mucosa and the superior pharyngeal constrictor muscle. The flap was 1.2 × 2.2 cm in greatest dimensions. The LNPF was used for salvage CSF leak repair in two cases: one clival and one tubal. Both patients had resolution of leak at 7 months follow-up. The LNPF is a novel flap with reconstruction potential for the nasopharynx, including the lower clivus and the eustachian tube.

Transoral robotic surgery (TORS) provides a minimally invasive approach to address tumors in selected and challenging anatomical locations. Among the critical areas where TORS demonstrates its prowess is the oropharynx. Oropharyngeal tumors can invade parapharyngeal space (PPS) which contains vital structures such as the carotid artery, internal jugular vein, and cranial nerves IX–XII. A deeper understanding of the endoscopic anatomy of the parapharyngeal space could reduce the morbidity associated with tumor resection in this dense neurovascular area. This video-article provides a step-by-step cadaveric dissection of the lower PPS though a transoral robotic approach.