Search

Objectives: Understand the prognostic impact of perineural invasion (PNI) in early-stage oral cavity squamous cell carcinoma (OCSCC). Assess the influence of adjuvant radiotherapy on outcomes of patients with PNI-positive early-stage OCSCC., Materials and Methods: Retrospective seven-institution cohort study including patients with pathologic T1-2 N0-1 OCSCC who underwent primary surgery with negative margins. Outcomes included disease-free survival (DFS) and locoregional control (LRC). Cox proportional hazards models were used to evaluate oncologic outcomes. Interaction terms were introduced to assess relationships between PNI and adjuvant radiotherapy., Results: Among 557 patients (mean (SD) age 61.0 (13.9), 47.2% female, 66.6% pathologic T1, 93.5% pathologic N0), 93 had PNI-positive tumors, among which 87.1% underwent neck dissection and 39.6% received radiotherapy. On multivariable analysis, PNI was associated with lower DFS and LRC. Adjuvant radiotherapy was not associated with improved outcomes on multivariable analysis of the entire cohort. However, among patients with PNI-positive tumors, adjuvant radiotherapy significantly decreased hazard for DFS., Conclusion: Among patients with low-risk, early-stage OCSCC, PNI was associated with worse DFS and LRC. In patients with PNI-positive tumors, adjuvant radiotherapy lowered hazard for DFS on multivariable analysis. These data support using adjuvant radiotherapy for patients with early-stage OCSCC with PNI., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier Ltd. All rights reserved.)

Objective: To evaluate the effect of histopathologic skin invasion on 2- and 5-year disease-free survival (DFS) and overall survival (OS) in patients treated with primary surgery for locally advanced oral cavity squamous cell carcinoma (OCSCC)., Study Design: A retrospective case-control study was performed comparing previously untreated patients with pT4a OCSCC with and without skin invasion., Setting: Academic medical center., Methods: Propensity score-matched cohorts were derived by age, sex, surgical margins, pathologic N classification, adjuvant treatment, and primary tumor site. The Kaplan-Meier method was used to evaluate 2- and 5-year OS and DFS, which were compared between cohorts via the log rank (Mantel-Cox) test statistic., Results: Overall 25 patients were identified to have pathologic skin invasion, and 50 were selected for the matched control group. OS was significantly lower for patients with skin invasion as compared with controls at 2 years (30.8% vs 53.3%, P = .018) and 5 years (16.6% vs 42.2%, P = .01). DFS was significantly lower for patients with skin invasion vs controls at 2 years (23.7% vs 47.7, P = .037) and 5 years (15.8% vs 41.4%, P = .024)., Conclusion: Histopathologic skin invasion in OCSCC is associated with dismal prognosis in patients who underwent primary surgical treatment. OS outcomes for patients with skin invasion are comparable to survival of patients with recurrent/metastatic disease and T4N2 disease., (© 2022 American Academy of Otolaryngology-Head and Neck Surgery Foundation.)

Objective: Identify previously unreported factors that predict the need for post-acute care after free flap reconstruction of the oral cavity., Study Design: Retrospective cohort study., Setting: Single academic medical center., Methods: A total of 134 patients with head and neck disease involving the oral cavity underwent free tissue transfer for reconstruction between August 2012 and October 2015. All patients had a tracheostomy placed at the time of surgery. Data were collected, including demographics, perioperative risk factors, and social variables. Univariate and multivariate logistic regression were used to identify risk factors for needing post-acute care., Results: Of 134 patients, 37 (28%) required post-acute care upon discharge, and 97 of 134 (72%) were discharged home with assistance. Multivariate logistic regression revealed that lack of family support (adjusted odds ratio [AOR], 32.12; 95% CI, 13.75-274.90; P = .002), tracheostomy tube at discharge (AOR, 13.70; 95% CI, 3.20-58.44; P < .001), government insurance (AOR, 3.85; 95% CI, 1.13-13.11; P = .031), hospital stay >10 days (AOR, 3.52; 95% CI, 1.25-9.90; P = .017), and increasing age (AOR, 1.11; 95% CI, 1.04-1.18; P = .003) were significantly associated with post-acute care need., Conclusion: Lack of family support, tracheostomy tube at discharge, government insurance, hospital stay >10 days, and increasing age are independently associated with the need for post-acute care following free flap reconstruction of the oral cavity. Physicians, social workers, and nurse case managers are positioned to identify patients at high risk for needing post-acute care and to reduce the duration of hospitalizations.

Background: Lymph node yield (LNY) is a proposed quality indicator in neck dissection for oral cavity squamous cell carcinoma (OCSCC)., Methods: Retrospective series including 190 patients with OCSCC undergoing neck dissection between 2016 and 2018. A change in pathologic grossing protocol was initiated during the study period to assess residual adipose tissue. A generalized linear model was used to assess the impact of multiple variables on LNY., Results: Mean LNY was 28.59 (SD = 17.65). The protocol identified a mean of 10.32 lymph nodes per case. Multivariable analysis identified associations between LNY and use of the pathology protocol (P = .02), number of dissected lymph node levels (P < .001), presence of pathologic lymph nodes (P = .002), body mass index (P = .02), prior neck surgery (P = .001), and prior neck radiation (P = .001)., Conclusions: Assessment of residual adipose tissue within neck dissection specimens improves accuracy of LNY. LNY in neck dissection is influenced by multiple factors including methods of pathologic assessment., (© 2020 Wiley Periodicals LLC.)

Objectives: To develop and validate an algorithm to predict occult nodal metastasis in clinically node negative oral cavity squamous cell carcinoma (OCSCC) using machine learning. To compare algorithm performance to a model based on tumor depth of invasion (DOI)., Materials and Methods: Patients who underwent primary tumor extirpation and elective neck dissection from 2007 to 2013 for clinical T1-2N0 OCSCC were identified from the National Cancer Database (NCDB). Multiple machine learning algorithms were developed to predict pathologic nodal metastasis using clinicopathologic data from 782 patients.The algorithm was internally validated using test data from 654 patients in NCDB and was then externally validated using data from 71 patients treated at a single academic institution. Performance was measured using area under the receiver operating characteristic (ROC) curve (AUC). Machine learning and DOI model performance were compared using Delong's test for two correlated ROC curves., Results: The best classification performance was achieved with a decision forest algorithm (AUC = 0.840). When applied to the single-institution data, the predictive performance of machine learning exceeded that of the DOI model (AUC = 0.657, p = 0.007). Compared to the DOI model, machine learning reduced the number of neck dissections recommended while simultaneously improving sensitivity and specificity., Conclusion: Machine learning improves prediction of pathologic nodal metastasis in patients with clinical T1-2N0 OCSCC compared to methods based on DOI. Improved predictive algorithms are needed to ensure that patients with occult nodal disease are adequately treated while avoiding the cost and morbidity of neck dissection in patients without pathologic nodal disease., (Copyright © 2019 Elsevier Ltd. All rights reserved.)

Background: Resections involving oral cavity mucosa, bone, and skin present a unique challenge. Optimizing outcomes often requires technically demanding reconstruction. The purpose of this study is to evaluate outcomes of several reconstructive approaches for patients with composite through-and-through defects, with a focus on the osteocutaneous radial forearm free flap (RFFF)., Methods: We conducted a retrospective evaluation of the cohort of patients treated for composite through-and-through defects with cutaneous involvement who underwent free flap reconstruction from August 2012 through October 2015., Results: Seventeen patients received a single flap (12 cases of osteocutaneous RFFF), whereas 10 patients underwent a combination of flaps. Complication rates and functional outcomes were favorable in patients who underwent osteocutaneous RFFFs. The supraclavicular artery island flap (SCAIF) was used as a second flap in 3 cases., Conclusion: The osteocutaneous RFFF provides a valuable reconstructive option for complex composite resection defects involving skin. When 2 flaps are required, the SCAIF is a viable alternative to a second free flap or pectoralis flap., (© 2018 Wiley Periodicals, Inc.)