Prior chemoradiotherapy and pathological perineural invasion predict the survival outcomes of salvage surgery in head and neck squamous cell carcinoma

Results of salvage neck dissection after chemoradiation in locally advanced head and neck squamous cell carcinoma

PURPOSE

Salvage surgery is mandatory when regional persistence/recurrence after chemoradiation. The aim of this study is to describe the outcomes of salvage surgery.

METHODS

A retrospective study was conducted in patients with locally advanced head and neck squamous cell carcinoma that were primarily treated with chemorradiation and underwent salvage neck dissection (ND) with suspected recurrent/persistent nodal disease. All patients had a response evaluation at 12 weeks through clinical examination and computed tomography-positron emission tomography. Decision for ND was taken in case of suspected persistence or if there was suspicion of recurrence, histologically confirmed.

RESULTS

There were 40 patients included. 32/40 (80%) ND were done because of confirmed/suspected persistence and 8/40 (20%) were done because of recurrences. Persistence was confirmed histologically in 14/32 (43.8%) cases and recurrence in 6/8 (75%) cases. Median survival from diagnosis was 39 months (95% CI 28.162-49.838). Significant differences were observed between patients who had viable tumour cells in the sample and those who did not, but the differences were only significant when only deaths due to tumour progression were considered (p = 0.014). 14/32 (43.8%) patients with suspected or confirmed persistence developed a recurrence after the ND and 3/8 (37.5%) patients with suspected or confirmed recurrence developed a new recurrence. New recurrences were more frequent in cases that had viable tumor in the specimen.

CONCLUSIONS

Patients with nodal persistence/recurrence have a poor prognosis, even after salvage surgery. However, in a substantial number of patients the disease is controlled after ND, so it should be offer to these patients.

Review of Outcomes after Salvage Surgery for Recurrent Squamous Cell Carcinoma of the Head and Neck

Surgery with adjuvant chemoradiotherapy or chemoradiotherapy is the mainstay in treatment for advanced stage head and neck squamous cell carcinoma; however, locoregional recurrences are frequent. Salvage surgery could be proposed in selected patients to improve local control, disease-free, and overall survival. Factors for improved disease-free and overall survival in patients treated with salvage surgery include age, tumor location, the initial T stage, HPV status, resection margins, and the time elapsing from the initial treatment. Clinical trials with adjuvant therapies have shown promise after salvage surgery in terms of tolerance and response, but clinical guidelines for using these adjuvant treatments are currently lacking. The aim of this review is to present current knowledge concerning the incidence and management of recurrent head and neck squamous cell carcinoma and current data concerning survival and morbidity after salvage surgery.

Reconstruction in Salvage Surgery for Head and Neck Cancers

Introduction

Salvage surgery is the treatment option in recurrences and second primary tumors. This paper aimed to study the options and outcomes of reconstruction and the predictors of poor reconstructive outcomes in salvage surgery for head and neck cancers.

Study Design

This is a retrospective study of all patients who underwent reconstructive flap surgery as part of salvage surgery for head and neck cancers between the years 2004 and 2017.

Methods

The initial treatment may be single modality radiotherapy or surgery or multimodality with combinations of surgery, radiotherapy, and chemotherapy. Any pathology that required surgical salvage was included. Any procedures done purely as reconstructive surgery were excluded. Predictor variables included demographical, clinical, and treatment factors. The outcome parameter was the occurrence of any flap-related complication or not. The complications and morbidity related to the procedures are reported.

Results

Ninety-three patients underwent loco-regional flaps (LRF group), and 100 had free flaps (FF group). Pectoralis major flap was the commonest flap used in 68 patients (73.1%). Anterolateral thigh (ALT) flap was the commonest free flap and comprised 41% of the FF group. Any skin-related complication was seen in 35 patients (37.6%) and 41 (41%), respectively, in LRF and FF subsets. Any flap-related complication was seen in 16 patients (17.2%) and 29 patients (29%), respectively, in LRF and FF subsets. A summary measure "any one of the complications" was seen in 46 (49.5%) and 57 (57%), respectively, in LRF and FF subsets. Univariate and multivariate analysis for any flap-related complication identified no statistically significant predictor.

Conclusions

Soft tissue flaps were preferred in salvage reconstruction, though the defects had a bony component. In the microvascular free flap reconstruction era, pectoralis major flap has shifted its role from a "workhorse flap" to a "salvage flap." About half of the patients develop some complications. Flap-related complications are also common. In salvage surgery, it is important that an appropriate flap is selected, suitable for the setting, according to the indications, neck, and patient conditions.

Expanding the role of combined immunochemotherapy and immunoradiotherapy in the management of head and neck cancer (Review)

Immunotherapy has become one of the most promising approaches in tumor therapy, and there are numerous associated clinical trials in China. As an immunosuppressive tumor, head and neck squamous cell carcinoma (HNSCC) carries a high mutation burden, making immune checkpoint inhibitors promising candidates in this field due to their unique mechanism of action. The present review outlines a comprehensive multidisciplinary cancer treatment approach and elaborates on how combining immunochemotherapy and immunoradiotherapy guidelines could enhance clinical efficacy in patients with HNSCC. Furthermore, the present review explores the immunology of HNSCC, current immunotherapeutic strategies to enhance antitumor activity, ongoing clinical trials and the future direction of the current immune landscape in HNSCC. Advanced-stage HNSCC presents with a poor prognosis, low survival rates and minimal improvement in patient survival trends over time. Understanding the potential of immunotherapy and ways to combine it with surgery, chemotherapy and radiotherapy confers good prospects for the management of human papillomavirus (HPV)-positive HNSCC, as well as other HPV-positive malignancies. Understanding the immune system and its effect on HNSCC progression and metastasis will help to uncover novel biomarkers for the selection of patients and to enhance the efficacy of treatments. Further research on why current immune checkpoint inhibitors and targeted drugs are only effective for some patients in the clinic is needed; therefore, further research is required to improve the overall survival of affected patients.

Prognostic factors in salvage surgery for recurrent head and neck cancer: A systematic review and meta-analysis

INTRODUCTION

Although salvage surgery (SS) is considered the best curative choice in recurrent head and neck cancer, the identification of patients who can benefit the most from this treatment is challenging.

METHODS

We systematically reviewed the prognostic role of pre- and post-surgery factors in patients undergoing SS for recurrent head and neck cancer (oral cavity, oropharynx, hypopharynx, and larynx).

RESULTS

Twenty-five studies met the inclusion criteria out of 1280 screened citations. Pre-surgery factors significantly associated with worse overall survival were age>60 years, advanced initial stage, early recurrence, and regional recurrence; no heterogeneity between study emerged. Among post- surgery factors, worse survival emerged for positive surgical margins, extracapsular extension and perineural invasion.

CONCLUSION

The identification of pre-surgery factors associated with poor outcomes may help the selection of the best candidate to SS; alternative treatments should be considered for high-risk patients. Post-surgery predictors of worse prognosis may guide clinicians in tailoring patients' surveillance.