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Ebrahimi A, Gupta R, McDowell L, Magarey MJR, Smith PN, Schulte KM, Perriman DM, Veness M, Porceddu S, Low THH, Fowler A, Clark JR. Determinants of Prognosis in Head and Neck Cutaneous Squamous Cell Carcinoma With Nodal Metastases. JAMA Otolaryngol Head Neck Surg 2024:2823992. [PMID: 39325436 DOI: 10.1001/jamaoto.2024.3103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2024]
Abstract
Importance The eighth edition tumor, node, metastasis (TNM) staging for head and neck cutaneous squamous cell carcinoma (HNcSCC) is a poor predictor of survival in patients with lymph node metastases, possibly due to the inclusion of extranodal extension (ENE). Objective To identify the key determinants of prognosis in patients with nodal metastatic HNcSCC and analyze the association of ENE with TNM stage and investigate for prognostic heterogeneity in ENE-positive disease. Design, Setting, and Participants This retrospective, multicenter cohort study was conducted at 4 Australian tertiary referral centers using prospectively collected data in patients treated between 1980 and 2017 with a median (IQR) follow-up of 3.2 (3.9) years. The study population included 1309 consecutive patients with HNcSCC that was metastatic to parotid and/or cervical nodes. After excluding cases with perioperative mortality, missing data, or follow-up, the final study population included 1151 patients. Exposure Curative intent surgery ± adjuvant radiotherapy. Main Outcomes and Measures Differences in locoregional control (LRC), disease-specific survival (DSS), and overall survival were determined using Cox regression analysis. Results Among 1151 patients, 976 (84.8%) were male and 175 (15.2%) female, with a median age of 73.3 years (range, 18-100 years). On multivariable analysis, immunosuppression (hazard ratio [HR], 2.48; 95% CI, 1.64-3.74), perineural invasion (HR, 1.69; 95% CI, 1.25-2.30), ENE (HR, 1.53; 95% CI, 0.95-2.44), size (>3-6 cm vs ≤3 cm [HR, 1.41; 95% CI, 1.03-1.93]; >6 cm vs ≤3 cm [HR, 5.01; 95% CI, 2.98-8.42]), and number of nodal metastases (3-4 vs 1-2 [HR, 1.54; 95% CI, 1.01-2.34]; ≥5 vs 1-2 [HR, 2.86; 95% CI, 1.99-4.11]) were associated with DSS. Similar results were found for LRC and overall survival. More than 90% of the population was categorized as TNM stage IV, with 32% attributable to ENE. In the ENE-positive subset (n = 860), DSS ranged from 8% to 88% based on stratification using other clinicopathological factors. Conclusions and Relevance The study results suggest that immunosuppression, perineural invasion, ENE, and size and number of nodal metastases are associated with reduced survival and LRC in HNcSCC with nodal metastases. The inclusion of ENE in HNcSCC staging needs to be reassessed, as it ascribes excessive importance to ENE and upstages most patients to TNM stage IV, despite many having a high chance of cure.
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Affiliation(s)
- Ardalan Ebrahimi
- Medical School, College of Health and Medicine, Australian National University, Canberra, Australian Capital Territory, Australia
- Department of Head and Neck Surgery, Sydney Head and Neck Cancer Institute, Chris O'Brien Lifehouse, Sydney, New South Wales, Australia
- Department of Head and Neck Surgery, The Canberra Hospital, Canberra, Australian Capital Territory, Australia
| | - Ruta Gupta
- Department of Tissue Pathology and Diagnostic Oncology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
- University of Sydney, Sydney, New South Wales, Australia
| | - Lachlan McDowell
- Department of Radiation Oncology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Matthew J R Magarey
- Department of Surgical Oncology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Department of Medical Education, University of Melbourne, Melbourne, Victoria, Australia
| | - Paul N Smith
- Medical School, College of Health and Medicine, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Klaus-Martin Schulte
- Medical School, College of Health and Medicine, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Diana M Perriman
- Medical School, College of Health and Medicine, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Michael Veness
- University of Sydney, Sydney, New South Wales, Australia
- Department of Radiation Oncology, Westmead Hospital, Sydney, New South Wales, Australia
| | - Sandro Porceddu
- Department of Radiation Oncology, Princess Alexandra Hospital, Brisbane, Queensland, Australia
- School of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Tsu-Hui Hubert Low
- Department of Head and Neck Surgery, Sydney Head and Neck Cancer Institute, Chris O'Brien Lifehouse, Sydney, New South Wales, Australia
- University of Sydney, Sydney, New South Wales, Australia
| | - Allan Fowler
- Department of Radiation Oncology, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Jonathan R Clark
- Department of Head and Neck Surgery, Sydney Head and Neck Cancer Institute, Chris O'Brien Lifehouse, Sydney, New South Wales, Australia
- University of Sydney, Sydney, New South Wales, Australia
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Catalano M, Nozzoli F, De Logu F, Nassini R, Roviello G. Management Approaches for High-Risk Cutaneous Squamous Cell Carcinoma with Perineural Invasion: An Updated Review. Curr Treat Options Oncol 2024; 25:1184-1192. [PMID: 39102167 PMCID: PMC11416415 DOI: 10.1007/s11864-024-01234-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/11/2024] [Indexed: 08/06/2024]
Abstract
OPINION STATEMENT Cutaneous squamous cell carcinoma (cSCC) stands as the second most prevalent non-melanoma skin cancer worldwide, comprising approximately 20% of all cutaneous malignancies. Determining its precise incidence poses challenges; however, reports indicate a global increase in its prevalence. At the time of diagnosis, the majority of cSCCs are localized, resulting in favorable 5-year cure rates surpassing 90%. Nevertheless, a subset of patients (3-7%) encounters locally advanced or metastatic cSCC, leading to substantial morbidity and mortality. The risk of metastasis ranges from 0.1% to 9.9%, carrying an associated mortality risk of 2.8%. Factors influencing recurrence, metastasis, and disease-specific mortality underscore the significance of perineural invasion (PNI) as a key indicator. Patients with PNI may manifest clinical symptoms and/or radiologic signs of PNI, while the majority remain asymptomatic, and PNI is frequently identified upon histologic examination. Despite its lower frequency compared to other cancer types, PNI serves as a recognized adverse prognostic factor for cSCC. Surgery is the elective treatment for these patients, while the role of adjuvant radiotherapy (ART) is yet contentious and have not been conclusively assessed, particularly in clear surgical margin. Prospective comparative studies are required to comprehensively evaluate the benefit and the risks of ART for cSCC and PNI patients.
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Affiliation(s)
- Martina Catalano
- Section of Clinical Pharmacology & Oncology, Department of Health Sciences, University of Florence, Florence, Italy.
| | - Filippo Nozzoli
- Section of Anatomic Pathology, Department of Health Sciences, University of Florence, Florence, Italy
| | - Francesco De Logu
- Section of Clinical Pharmacology & Oncology, Department of Health Sciences, University of Florence, Florence, Italy
| | - Romina Nassini
- Section of Clinical Pharmacology & Oncology, Department of Health Sciences, University of Florence, Florence, Italy
| | - Giandomenico Roviello
- Section of Clinical Pharmacology & Oncology, Department of Health Sciences, University of Florence, Florence, Italy
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3
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Ramesh U, Chiang E, Stafford H, Buell J, Materia F, Amit M, Yaniv D. Cutaneous Squamous Cell Carcinoma of the Head and Neck: Pathological Features and What They Mean for Prognosis and Treatment. Cancers (Basel) 2024; 16:2866. [PMID: 39199636 PMCID: PMC11352224 DOI: 10.3390/cancers16162866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2024] [Revised: 08/14/2024] [Accepted: 08/16/2024] [Indexed: 09/01/2024] Open
Abstract
Cutaneous squamous cell carcinoma (cSCC) is one of the most common cancers worldwide, with an incidence that has increased over the past 30 years. Although usually curable with excision, cSCC can become widely metastatic and aggressive with poor outcomes. Whereas the clinical and radiographic extent of any cancer will always guide selection of treatment modality, pathological features of cSCC also play an important role in determining prognosis and, subsequently, the need for further therapy. Therefore, reviewing and summarizing the current literature regarding pathological prognostic indicators of cSCC is essential to improving clinical outcomes. The present literature review yielded depth of invasion, surgical margins, perineural invasion, extranodal extension, lymphovascular invasion, tumor grade, tumor subtype, premalignant lesions, and molecular markers as key prognostic indicators, all with varying recommendations for adjuvant therapy. Notably, some of these factors have not been incorporated into either the American Joint Committee on Cancer staging system (8th edition) or National Comprehensive Cancer Network Clinical Practice Guidelines in Oncology for cSCC. This review highlights a need for further research into these prognostic indicators and their role in determining the need for adjuvant treatment in head and neck cSCC.
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Affiliation(s)
- Uma Ramesh
- School of Medicine, Baylor College of Medicine, Houston, TX 77030, USA; (U.R.); (E.C.); (H.S.); (J.B.)
| | - Elizabeth Chiang
- School of Medicine, Baylor College of Medicine, Houston, TX 77030, USA; (U.R.); (E.C.); (H.S.); (J.B.)
| | - Haleigh Stafford
- School of Medicine, Baylor College of Medicine, Houston, TX 77030, USA; (U.R.); (E.C.); (H.S.); (J.B.)
| | - Jane Buell
- School of Medicine, Baylor College of Medicine, Houston, TX 77030, USA; (U.R.); (E.C.); (H.S.); (J.B.)
| | - Frank Materia
- Department of Otolaryngology—Head and Neck Surgery, University of Kansas Medical Center, Kansas City, KS 66160, USA;
| | - Moran Amit
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Dan Yaniv
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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4
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Junior DSDRL, Cidale BMA, Pereira AZL, de Menezes JN, Bertolli E, Belfort FA, Munhoz RR. Emerging Indications for Neoadjuvant Systemic Therapies in Cutaneous Malignancies. Med Sci (Basel) 2024; 12:35. [PMID: 39189198 PMCID: PMC11348210 DOI: 10.3390/medsci12030035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 05/31/2024] [Accepted: 06/13/2024] [Indexed: 08/28/2024] Open
Abstract
Patients with cutaneous malignancies and locoregional involvement represent a high-risk population for disease recurrence, even if they receive optimal surgery and adjuvant treatment. Here, we discuss how neoadjuvant therapy has the potential to offer significant advantages over adjuvant treatment, further improving outcomes in some patients with skin cancers, including melanoma, Merkel cell carcinoma, and cutaneous squamous-cell carcinoma. Both preclinical studies and in vivo trials have demonstrated that exposure to immunotherapy prior to surgical resection can trigger a broader and more robust immune response, resulting in increased tumor cell antigen presentation and improved targeting by immune cells, potentially resulting in superior outcomes. In addition, neoadjuvant approaches hold the possibility of providing a platform for evaluating pathological responses in the resected lesion, optimizing the prognosis and enabling personalized adaptive management, in addition to expedited drug development. However, more data are still needed to determine the ideal patient selection and the best treatment framework and to identify reliable biomarkers of treatment responses. Although there are ongoing questions regarding neoadjuvant treatment, current data support a paradigm shift toward considering neoadjuvant therapy as the standard approach for selecting patients with high-risk skin tumors.
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Affiliation(s)
| | - Beatriz Mendes Awni Cidale
- Oncology Center, Hospital Sírio-Libanês, São Paulo 01308-050, Brazil; (D.S.d.R.L.J.); (A.Z.L.P.); (R.R.M.)
| | - Ana Zelia Leal Pereira
- Oncology Center, Hospital Sírio-Libanês, São Paulo 01308-050, Brazil; (D.S.d.R.L.J.); (A.Z.L.P.); (R.R.M.)
| | - Jacqueline Nunes de Menezes
- Cutaneous Malignancies and Sarcoma Group, Hospital Sírio-Libanês, São Paulo 01308-050, Brazil; (J.N.d.M.); (E.B.); (F.A.B.)
| | - Eduardo Bertolli
- Cutaneous Malignancies and Sarcoma Group, Hospital Sírio-Libanês, São Paulo 01308-050, Brazil; (J.N.d.M.); (E.B.); (F.A.B.)
| | - Francisco Aparecido Belfort
- Cutaneous Malignancies and Sarcoma Group, Hospital Sírio-Libanês, São Paulo 01308-050, Brazil; (J.N.d.M.); (E.B.); (F.A.B.)
| | - Rodrigo Ramella Munhoz
- Oncology Center, Hospital Sírio-Libanês, São Paulo 01308-050, Brazil; (D.S.d.R.L.J.); (A.Z.L.P.); (R.R.M.)
- Cutaneous Malignancies and Sarcoma Group, Hospital Sírio-Libanês, São Paulo 01308-050, Brazil; (J.N.d.M.); (E.B.); (F.A.B.)
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5
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Jiang R, Fritz M, Que SKT. Cutaneous Squamous Cell Carcinoma: An Updated Review. Cancers (Basel) 2024; 16:1800. [PMID: 38791879 PMCID: PMC11119634 DOI: 10.3390/cancers16101800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/01/2024] [Accepted: 05/02/2024] [Indexed: 05/26/2024] Open
Abstract
Representing the second most common skin cancer, the incidence and disease burden of cutaneous squamous cell carcinoma (cSCC) continues to increase. Surgical excision of the primary site effectively cures the majority of cSCC cases. However, an aggressive subset of cSCC persists with clinicopathological features that are indicative of higher recurrence, metastasis, and mortality risks. Acceleration of these features is driven by a combination of genetic and environmental factors. The past several years have seen remarkable progress in shaping the treatment landscape for advanced cSCC. Risk stratification and clinical management is a top priority. This review provides an overview of the current perspectives on cSCC with a focus on staging, treatment, and maintenance strategies, along with future research directions.
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Affiliation(s)
- Rina Jiang
- Department of Dermatology, Indiana University School of Medicine, Indianapolis, IN 46202, USA;
| | - Mike Fritz
- Department of Dermatology, Indiana University School of Medicine, Indianapolis, IN 46202, USA;
| | - Syril Keena T. Que
- Department of Dermatology, Indiana University School of Medicine, Indianapolis, IN 46202, USA;
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6
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Ryan MP, Winsett FT, Armenta AM, Goodwin BP, Wagner RF. Lymphovascular Invasion in Cutaneous Squamous Cell Carcinoma. Dermatol Surg 2024:00042728-990000000-00754. [PMID: 38603804 DOI: 10.1097/dss.0000000000004187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
BACKGROUND Although there is a large body of literature regarding risk stratification and outcomes for perineural invasion (PNI) in cutaneous squamous cell carcinoma (cSCC), there is a relative paucity of studies exploring the role of lymphovascular invasion (LVI) in cSCC and a lack of clear evidence-based guidelines for how to manage patients with these tumors. OBJECTIVE This article is intended to review the available literature regarding LVI in cSCC and formulate evidence-based recommendations for clinical management. METHODS AND MATERIALS A literature review was conducted using PubMed to find relevant articles relating to outcomes and management of primary cSCC with LVI. RESULTS The available literature suggests that LVI is a major risk factor for poor outcomes and increased morbidity and mortality in cSCC. CONCLUSION Lymphovascular invasion is a very high-risk feature that should place these tumors in the highest-risk category, and management of these tumors should be similar to that of squamous cell carcinoma with PNI.
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Affiliation(s)
- Michael P Ryan
- Department of Dermatology, University of Texas Health Science Center at Houston, Houston, Texas
| | - Frank T Winsett
- Department of Dermatology, University of Texas Medical Branch, Galveston, Texas
| | - Andrew M Armenta
- Department of Dermatology, University of Texas Medical Branch, Galveston, Texas
| | - Brandon P Goodwin
- Department of Dermatology, University of Texas Medical Branch, Galveston, Texas
| | - Richard F Wagner
- Department of Dermatology, University of Texas Medical Branch, Galveston, Texas
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7
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Benedetti S, Frosolini A, Catarzi L, Marsiglio A, Gennaro P, Gabriele G. Impact of the COVID-19 Pandemic on the Diagnosis and Management of Non-Melanoma Skin Cancer in the Head and Neck Region: A Retrospective Cohort Study. Healthcare (Basel) 2024; 12:501. [PMID: 38391876 PMCID: PMC10888473 DOI: 10.3390/healthcare12040501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/30/2024] [Accepted: 02/03/2024] [Indexed: 02/24/2024] Open
Abstract
The present study investigates the impact of the COVID-19 pandemic on the management of Non-Melanoma Skin Cancer (NMSC) in the head and neck region. Conducted at the University Hospital "Le Scotte" in Siena, Italy, the research includes 111 patients treated from 2018 to 2021. The study aims to understand how pandemic-related healthcare changes affected NMSC treatment, focusing on differences in diagnosis and management before and during the pandemic. Methods involved retrospective analysis of patient demographics, clinical characteristics, lesion details, and treatment modalities, using Jamovi software (version 1.6) for statistical analysis. Results revealed the scalp as the most common NMSC site, with Squamous Cell Carcinoma (SCC) being the predominant histotype. A significant rise in Basal Cell Carcinoma (BCC) cases and a reduction in surgery duration were noted during the pandemic. The shift to local anesthesia was more pronounced, reflecting the necessity to adapt to healthcare limitations. Despite the disruptions caused by the pandemic, there was no significant drop in NMSC cases, which is attributed to the noticeable nature of head and neck lesions. In conclusion, this study highlights that the COVID-19 pandemic significantly influenced surgical practices in NMSC management, emphasizing the need for effective healthcare strategies that balance quality patient care with public health safety measures.
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Affiliation(s)
- Simone Benedetti
- Maxillofacial Surgery Unit, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
| | - Andrea Frosolini
- Maxillofacial Surgery Unit, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
| | - Lisa Catarzi
- Maxillofacial Surgery Unit, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
| | - Agnese Marsiglio
- Maxillofacial Surgery Unit, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
| | - Paolo Gennaro
- Maxillofacial Surgery Unit, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
| | - Guido Gabriele
- Maxillofacial Surgery Unit, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
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Tong JY, Huilgol SC, James C, Selva D. Recommendations for risk stratification of periocular squamous cell carcinoma. Surv Ophthalmol 2023; 68:964-976. [PMID: 37172747 DOI: 10.1016/j.survophthal.2023.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 04/27/2023] [Accepted: 05/01/2023] [Indexed: 05/15/2023]
Abstract
Periocular squamous cell carcinoma is a common cutaneous malignancy with generally favorable outcomes; however, the periocular region is intrinsically a high-risk location, and there exist a subset of lesions with a propensity for poor outcomes. Orbital invasion, intracranial perineural spread, nodal and distant metastasis are feared complications. There are several staging systems for eyelid carcinoma and cutaneous squamous cell carcinoma, but the definition of high-risk lesions remains heterogeneous. It is unclear exactly which lesions can be safely deescalated, and which require nodal evaluation and adjuvant multimodal therapy. We seek to answer these questions by summarizing the literature on clinicopathologic variables, molecular markers, and gene profiling tests in periocular squamous cell carcinoma, with the extrapolation of data from the cutaneous squamous cell carcinoma literature. Standardized pathology reports with information on tumor dimensions, histological subtype and grade, perineural invasion, and lymphovascular invasion should become uniform. Integration with gene expression profiling assessments will individualize and improve the predictive accuracy of risk stratification tools to ultimately inform multidisciplinary decision-making.
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Affiliation(s)
- Jessica Y Tong
- South Australian Institute of Ophthalmology, Royal Adelaide Hospital, Adelaide, Australia; Save Sight Institute, Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Australia.
| | - Shyamala C Huilgol
- Adelaide Skin & Eye Centre, South Australia, Australia; Department of Dermatology, Royal Adelaide Hospital, The University of Adelaide, Adelaide, South Australia, Australia
| | - Craig James
- Clinpath Laboratories, Adelaide, South Australia, Australia
| | - Dinesh Selva
- South Australian Institute of Ophthalmology, Royal Adelaide Hospital, Adelaide, Australia; Adelaide Skin & Eye Centre, South Australia, Australia
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9
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Affiliation(s)
- Ashley Wysong
- From the Department of Dermatology, University of Nebraska Medical Center, Omaha
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10
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Gevorkov AR, Boyko AV, Polyakov AP, Chernichenko AV, Gerasimov VA, Meshcheryakova IA, Kaprin AD. Radiotherapy for cutaneous squamous cell carcinoma: current standards and outlooks. HEAD AND NECK TUMORS (HNT) 2022. [DOI: 10.17650/2222-1468-2022-12-3-53-70] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Cutaneous squamous cell carcinoma accounts for 20 % of all malignant non-melanoma skin tumors, which is one of the most common cancers worldwide. Antitumor treatment is usually very effective: cure rate reaches 90 %, while local recurrence rate is 25 %. The main treatment option for primary skin cancers is surgery. The most significant risk factors for locoregional recurrence include tumor location (head and neck), size (>2 cm), depth of invasion (>4 mm), tumor differentiation grade, perineural invasion, immune system disorders (immunosuppression), severe concomitant diseases, and previous treatment.In patients with advanced cutaneous squamous cell carcinoma, 1-year, 2-year, and 3-year survival rates are 50–80, 30–35 and 15–16 %, respectively. Radiotherapy is a radical treatment option that increases the 5-year survival rate to 90 % and ensures good cosmetic results in 80 % of cases. There are 3 main variants of radiotherapy for cutaneous squamous cell carcinoma: sole radiotherapy according to a radical program, adjuvant radiotherapy in combination with surgery, and palliative radiotherapy. most frequently, radiotherapy is used as part of adjuvant postoperative treatment and is not initially considered as a sole conservative treatment for cutaneous squamous cell carcinoma patients below 45 years of age with resectable tumors, especially high-risk tumors. palliative radiotherapy is an affordable and effective method for combating painful symptoms; moreover, it often provides long-term local control.
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Affiliation(s)
- A. R. Gevorkov
- P.A. Herzen Moscow Oncology Research Institute – a branch of the National Medical Radiology Research Center, Ministry of Health of Russia
| | - A. V. Boyko
- P.A. Herzen Moscow Oncology Research Institute – a branch of the National Medical Radiology Research Center, Ministry of Health of Russia
| | - A. P. Polyakov
- P.A. Herzen Moscow Oncology Research Institute – a branch of the National Medical Radiology Research Center, Ministry of Health of Russia
| | - A. V. Chernichenko
- P.A. Herzen Moscow Oncology Research Institute – a branch of the National Medical Radiology Research Center, Ministry of Health of Russia
| | - V. A. Gerasimov
- P.A. Herzen Moscow Oncology Research Institute – a branch of the National Medical Radiology Research Center, Ministry of Health of Russia
| | - I. A. Meshcheryakova
- P.A. Herzen Moscow Oncology Research Institute – a branch of the National Medical Radiology Research Center, Ministry of Health of Russia
| | - A. D. Kaprin
- P.A. Herzen Moscow Oncology Research Institute – a branch of the National Medical Radiology Research Center, Ministry of Health of Russia; National Medical Research Center of Radiology, Ministry of Health of Russia; Рeoples’ Friendship University of Russia
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11
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Perineural invasion and perineural spread in periocular squamous cell carcinoma. Eye (Lond) 2022; 37:875-884. [PMID: 36400852 PMCID: PMC10050156 DOI: 10.1038/s41433-022-02306-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 10/14/2022] [Accepted: 10/31/2022] [Indexed: 11/19/2022] Open
Abstract
AbstractPerineural invasion (PNI) in cutaneous squamous cell carcinoma (SCC) of the periocular region is a prognostic marker of adverse tumour outcomes. PNI carries a well-established risk of tumour recurrence, regional metastasis and higher likelihood of mortality. This review will explore and stratify the risks conferred by histological PNI parameters. The radiological features of perineural spread (PNS) and the imaging sequences that delineate these findings will also be highlighted. Surgical excision with en face margin control is the preferred technique for achieving histological clearance. Adjuvant radiotherapy improves treatment outcomes in the setting of concomitant high-risk features. For locally advanced or metastatic cutaneous SCC, immunotherapy represents a novel treatment alternative. This review will provide an algorithm for the diagnosis and management of periocular SCC with PNI and PNS.
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Advances in Cutaneous Squamous Cell Carcinoma Management. Cancers (Basel) 2022; 14:cancers14153653. [PMID: 35954316 PMCID: PMC9367549 DOI: 10.3390/cancers14153653] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/16/2022] [Accepted: 07/25/2022] [Indexed: 01/27/2023] Open
Abstract
Simple Summary Cutaneous squamous cell carcinoma (cSCC) is an increasingly prevalent and morbid cancer worldwide. Management of this cancer has changed significantly in the last decade through improved risk stratification and new therapies offering patients with locally advanced and metastatic disease more effective, less toxic, and more durable treatment options. Ongoing clinical trials are assessing new therapeutic options as well as optimizing existing regimens in efforts to better manage this cancer. The recent developments highlight the need for multidisciplinary care, especially for those with locally advanced and metastatic disease. Abstract cSCC is increasing in prevalence due to increased lifespans and improvements in survival for conditions that increase the risk of cSCC. The absolute mortality of cSCC exceeds melanoma in the United States and approaches that of melanoma worldwide. This review presents significant changes in the management of cSCC, focusing on improvements in risk stratification, new treatment options, optimization of existing treatments, and prevention strategies. One major breakthrough in cSCC treatment is the advent of immune checkpoint inhibitors (ICIs) targeting programmed cell death protein 1 (PD-1) and programmed death-ligand 1 (PD-L1), which have ushered in a renaissance in the treatment of patients with locally advanced and metastatic disease. These agents have offered patients with advanced disease decreased therapeutic toxicity compared to traditional chemotherapy agents, a more durable response after discontinuation, and improved survival. cSCC is an active field of research, and this review will highlight some of the novel and more developed clinical trials that are likely to impact cSCC management in the near future.
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Ferini G, Palmisciano P, Forte S, Viola A, Martorana E, Parisi S, Valenti V, Fichera C, Umana GE, Pergolizzi S. Advanced or Metastatic Cutaneous Squamous Cell Carcinoma: The Current and Future Role of Radiation Therapy in the Era of Immunotherapy. Cancers (Basel) 2022; 14:1871. [PMID: 35454779 PMCID: PMC9032290 DOI: 10.3390/cancers14081871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 03/31/2022] [Accepted: 04/06/2022] [Indexed: 02/05/2023] Open
Abstract
Radiation therapy (RT) is an effective therapeutic option for small localized cutaneous squamous cell carcinoma (cSCC) among patients who are not eligible for or refuse surgery. RT also has a defined role as an adjuvant treatment in cases of adverse features that predispose to tumor recurrence after local excision. Since the development of cSCC is often a late consequence of chronic sun exposure, its occurrence is more common among elderly patients whose comorbidities may contraindicate surgical procedures. These could be impeded not only by frail medical conditions but also by technical issues. Indeed, an aggressive locoregional behavior of cSCC may culminate in unresectability due to widespread invasion of neighboring tissues. Moreover, cSCC could develop distant metastases. Both locally advanced and metastatic cSCCs carry a poor prognosis. In these scenarios, recent discoveries of tumor molecular targets are promoting the use of promising systemic therapies, especially immunotherapy, over RT. However, the results from using immunotherapy and, even more so, of chemotherapy are still not optimal. By contrast, advances in radiation delivery equipment can safely treat even large and complex-shaped cSCC targets in challenging body sites. In addition, RT could also have a role in metastatic cSCC settings by enhancing the effectiveness of concomitant immunotherapy. The aim of this review is to summarize and comment on the body of literature about the use of radiotherapy for operable and inoperable locally advanced cSCCs and for metastatic ones in an attempt to define its current and future role.
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Affiliation(s)
- Gianluca Ferini
- Department of Radiation Oncology, REM Radioterapia srl, Via Penninazzo 11, 95029 Viagrande, Italy;
| | | | - Stefano Forte
- IOM Ricerca srl, Via Penninazzo 11, 95029 Viagrande, Italy; (S.F.); (E.M.)
| | - Anna Viola
- Fondazione Istituto Oncologico del Mediterraneo, 95029 Viagrande, Italy;
| | - Emanuele Martorana
- IOM Ricerca srl, Via Penninazzo 11, 95029 Viagrande, Italy; (S.F.); (E.M.)
| | - Silvana Parisi
- Radiation Oncology Unit—Department of Biomedical, Dental Science and Morphological and Functional Images, University of Messina, 98100 Messina, Italy; (S.P.); (S.P.)
| | - Vito Valenti
- Department of Radiation Oncology, REM Radioterapia srl, Via Penninazzo 11, 95029 Viagrande, Italy;
| | - Corrado Fichera
- Department of Plastic Surgery, Istituto Oncologico del Mediterraneo, 95029 Viagrande, Italy;
| | - Giuseppe Emmanuele Umana
- Trauma and Gamma-Knife Center, Department of Neurosurgery, Cannizzaro Hospital, 95126 Catania, Italy;
| | - Stefano Pergolizzi
- Radiation Oncology Unit—Department of Biomedical, Dental Science and Morphological and Functional Images, University of Messina, 98100 Messina, Italy; (S.P.); (S.P.)
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14
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Adjuvant radiation following clear margin resection of high T-stage cutaneous squamous cell carcinoma halves the risk of local and locoregional recurrence: A dual center retrospective study. J Am Acad Dermatol 2022; 87:87-94. [DOI: 10.1016/j.jaad.2022.03.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 03/06/2022] [Accepted: 03/23/2022] [Indexed: 11/20/2022]
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15
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Cohen ER, Misztal C, Dable C, Gomez-Fernandez C, Bhatia RG, Roth P, Ma R, Trosman S, Green C, Nicolli E, Dinh CT, Sargi ZB. Redefining Perineural Invasion in Head and Neck Cutaneous Squamous Cell Carcinoma. Otolaryngol Head Neck Surg 2022; 167:705-715. [PMID: 35133896 DOI: 10.1177/01945998221076110] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Perineural invasion (PNI) negatively affects disease-specific survival in patients with head and neck cutaneous squamous cell carcinoma (HNcSCC). We aim to analyze the prognostic implications of PNI-related features. STUDY DESIGN Retrospective cohort study. SETTING Academic tertiary care hospital. METHODS Retrospective chart review was performed on 104 patients diagnosed with HNcSCC between January 2011 and October 2019 who underwent resection, parotidectomy, and neck dissection with more than 1 year of follow-up. PNI was classified as incidental (identified on histopathology alone) or clinical (present on radiography and/or physical exam). Primary outcome measures were overall survival and disease-free survival (DFS). Kaplan-Meier analysis, logistic regression, and Cox regression were performed. RESULTS The overall 5-year DFS was 57.9%. Sixty-one patients had PNI. On histopathology, 28 lesions showed complete nerve encirclement, 10 involved >5 nerves, and 12 involved named nerves. Patients with facial weakness (P = .026) and positive margins (P = .0029) had a higher likelihood of histopathologic PNI, and positive margins retained significance on multivariable analysis (P = .0079). Worse DFS was seen in patients with PNI (P = .004), advanced tumor stage (P = .049), positive margins (P = .014), and >5 nerves involved (P = .0061). Furthermore, histopathologic PNI was a predictor of DFS (hazard ratio [HR], 3.07; 95% CI, 0.33-1.38; P = .0061) overall and in the clinical PNI cohort (HR, 3.43; 95% CI, 1.65-7.10; P = .00091). CONCLUSION DFS was significantly worse in patients with PNI, facial nerve weakness, advanced T stage, positive margins, and multiple nerve involvement. Further characterization of PNI features may help improve prognostic predictions and identify patients who may benefit from more aggressive treatment.
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Affiliation(s)
- Erin R Cohen
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Carly Misztal
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Cortney Dable
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Carmen Gomez-Fernandez
- Department of Pathology, University of Miami Miller School of Medicine, Miami, Florida, USA.,Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Rita G Bhatia
- Department of Radiology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Patrick Roth
- Department of Radiology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Ruixuan Ma
- Department of Public Health Sciences, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Samuel Trosman
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Carlos Green
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Elizabeth Nicolli
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, USA.,Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Christine T Dinh
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Zoukaa B Sargi
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, USA.,Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida, USA
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16
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Current Methods and Caveats to Risk Factor Assessment in Cutaneous Squamous Cell Carcinoma (cSCC): A Narrative Review. Dermatol Ther (Heidelb) 2022; 12:267-284. [PMID: 34994967 PMCID: PMC8850485 DOI: 10.1007/s13555-021-00673-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Indexed: 01/21/2023] Open
Abstract
Cutaneous squamous cell carcinoma (cSCC) is the second most common form of skin cancer, and the number of deaths due to cSCC is estimated to be greater than the number attributed to melanoma. While the majority of cSCC tumors are resectable with clear margins by standard excision practices, some lesions exhibit high-risk factors for which there is evidence of their association with recurrence, metastasis, and disease-specific death. The most commonly used staging systems and guidelines in the USA for cSCC are based on these clinical and pathologic high-risk factors; however, these are limited in their ability to predict adverse events, thus posing a challenge for implementing risk-directed patient management. Since the development of local recurrence and/or metastasis has a profound impact on the survival of patients with cSCC, accurate identification of patients at high risk for poor outcomes is critical, potentially allowing for early and appropriate adjuvant therapy. This review summarizes the current cSCC literature with a focus on how differing clinical assessments within each of the five selected risk factors (perineural invasion, differentiation, depth of invasion, size, and location) can influence the evaluation of patient outcomes, along with summarizing the utility of staging and guidelines, and highlighting the potential for molecular tools to improve upon cSCC risk assessment.
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17
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Brancaccio G, Briatico G, Pellegrini C, Rocco T, Moscarella E, Fargnoli MC. Risk Factors and Diagnosis of Advanced Cutaneous Squamous Cell Carcinoma. Dermatol Pract Concept 2021; 11:e2021166S. [PMID: 34877074 DOI: 10.5826/dpc.11s2a166s] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/13/2021] [Indexed: 10/31/2022] Open
Abstract
Cutaneous squamous cell carcinoma (cSCC) is the second most common cancer affecting humans. The combination of the increasing incidence and high mortality in advanced stages of the disease, defines cSCC as an emerging public health problem. Advanced disease includes metastatic and locally advanced cSCC. Metastatic disease refers to the presence of locoregional metastasis (in transit or to regional lymph nodes) or distant metastasis. Locally advanced disease has been defined as non-metastatic cSCC that is unlikely to be cured with surgery, radiotherapy, or combination treatment. While metastatic cSCC is easily diagnosed, locally advanced disease lacks consensus definition and diagnosis is made after multidisciplinary board consultation. Identifying patients with aggressive cSCC at highest risk for relapse may prevent the occurrence of advanced disease. Prognostic factors suggested by most guidelines include tumor diameter (>2 cm), localization on temple/ear/lip/area, thickness (>6 mm), or invasion beyond subcutaneous fat, poor grade of differentiation, desmoplasia, perineural invasion, bone erosion, immunosuppression, undefined borders, recurrence, growth rate, site of prior radiotherapy, and lymphatic or vascular involvement. Although risk factors associated with worse outcomes are well known, there is still a gap of knowledge on the precise risk of each factor taken individually. The aim of this review is to summarize cSCC prognostic factors and encompass the various staging systems to guide management and follow-up in cSCC patients at higher risk for local recurrence and metastasis. Finally, we describe the hallmarks of the advanced disease. Advanced cSCC diagnosis should be made by a multidisciplinary board considering patients' performance status and disease characteristics.
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Affiliation(s)
| | - Giulia Briatico
- Dermatology Unit, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Cristina Pellegrini
- Dermatology, Department of Biotechnological and Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Tea Rocco
- Dermatology, Department of Biotechnological and Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Elvira Moscarella
- Dermatology Unit, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Maria Concetta Fargnoli
- Dermatology, Department of Biotechnological and Clinical Sciences, University of L'Aquila, L'Aquila, Italy
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18
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Amit M, Liu C, Mansour J, Gleber-Netto FO, Tam S, Baruch EN, Aashiq M, El-Naggar AK, Moreno AC, Rosenthal DI, Glisson BS, Ferrarotto R, Wong MK, Tsai K, Flores ER, Migden MR, Silverman DA, Li G, Khanna A, Goepfert RP, Nagarajan P, Weber RS, Myers JN, Gross ND. Elective neck dissection versus observation in patients with head and neck cutaneous squamous cell carcinoma. Cancer 2021; 127:4413-4420. [PMID: 34358340 PMCID: PMC10187975 DOI: 10.1002/cncr.33773] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/18/2021] [Accepted: 04/26/2021] [Indexed: 11/12/2022]
Abstract
BACKGROUND The survival benefit of elective neck dissection (END) for patients with cutaneous squamous cell carcinoma (cSCC) of the head and neck and no evidence of regional metastasis (cN0) has never been reported. The aim of this study was to determine the effect of END on patient survival. METHODS The authors included patients with head and neck cSCC who had undergone primary surgery from 1995 to 2017. The primary end point was survival, and the secondary end points were the incidence of occult regional disease and regional disease control. To assess the impact of END on survival, the authors used multivariable Cox proportional hazards models with propensity score and matching techniques for internal validation. RESULTS A total of 1111 patients presented with no evidence of nodal disease; 173 had END, and 938 were observed. Adjuvant radiotherapy to the neck was administered to 101 patients (9%). END resulted in a 5-year overall survival rate of 52%, whereas the rate was 63% in the observation group (P = .003 [log-rank]). The 5-year disease-free survival rate for patients undergoing END was similar to that for the observation group (73% vs 75%; P = .429). A multivariate regression model showed that the performance of END was not associated with improved rates of overall, disease-specific, or disease-free survival; similarly, among patients with advanced disease (T3-4), those who underwent END did not have improved survival rates. CONCLUSIONS Among patients with cSCC of the head and neck, observation of the neck nodes resulted in noninferior survival rates in comparison with END at the time of primary surgery. Further studies are required to elucidate the role of END in patients with advanced disease.
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Affiliation(s)
- Moran Amit
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Chuan Liu
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jobran Mansour
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Frederico O Gleber-Netto
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Samantha Tam
- Department of Otolaryngology-Head and Neck Surgery, Henry Ford Health System and Henry Ford Cancer Institute, Detroit, Michigan
| | - Erez N Baruch
- Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Mohamed Aashiq
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Adel K El-Naggar
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Amy C Moreno
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - David I Rosenthal
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Bonnie S Glisson
- Department of Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Renata Ferrarotto
- Department of Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Michael K Wong
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Kenneth Tsai
- Department of Pathology, Moffitt Cancer Center, Tampa, Florida
| | - Elsa R Flores
- Department of Molecular Oncology, Moffitt Cancer Center, Tampa, Florida
| | - Michael R Migden
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Deborah A Silverman
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas.,Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Goujun Li
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Anshu Khanna
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Ryan P Goepfert
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | | | - Randal S Weber
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jeffrey N Myers
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Neil D Gross
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
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19
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Zhang J, Wang Y, Wijaya WA, Liang Z, Chen J. Efficacy and prognostic factors of adjuvant radiotherapy for cutaneous squamous cell carcinoma: A systematic review and meta-analysis. J Eur Acad Dermatol Venereol 2021; 35:1777-1787. [PMID: 33930213 DOI: 10.1111/jdv.17330] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 04/02/2021] [Indexed: 02/05/2023]
Abstract
Although adjuvant radiotherapy has been used for cutaneous squamous cell carcinoma, its outcome benefits, especially for patients with clear surgical margins, have not been statistically estimated, and the characteristics that can indicate patients who require adjuvant therapy need to be validated with more evidence. We conducted a systematic review and meta-analysis of literature on the survival outcomes and prognostic factors in patients with cSCC treated by surgery with or without adjuvant radiotherapy. Twenty related studies involving 2605 patients met our inclusion criteria. The significant survival outcomes of adjuvant radiotherapy included lower recurrence (OR, 0.56; 95% CI, 0.36-0.85), longer disease-free survival (OR, 2.17; 95% CI, 1.23-3.83) and longer overall survival (OR, 2.94; 95% CI, 1.75-4.91). Significant prognostic factors for poor outcomes were perineural invasion (HR, 1.61; 95% CI, 1.24-2.09), involved surgical margins (HR, 2.34; 95% CI, 1.42-3.83) and immunosuppression (HR, 3.02; 95% CI, 2.14-4.25) while adjuvant radiotherapy significantly contributed to better overall survival (HR, 0.47; 95% CI, 0.34-0.65). In conclusion, this systematic review suggests that in cutaneous squamous cell carcinoma patients with risk factors, including metastasis to the parotid gland, perineural invasion and immunosuppression, the use of adjuvant radiotherapy may be beneficial irrespective of surgical margin status.
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Affiliation(s)
- J Zhang
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Y Wang
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - W A Wijaya
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Z Liang
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - J Chen
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, China
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