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Management of patients with synchronous head-and-neck and lung cancers: SYNCHRON GFPC 15-01 study


1 Service des Maladies Respiratoires, Hôpital d'Instruction des Armées Clermont Tonnerre, Brest, France
2 Centre Anti-Cancéreux François-Baclesse, Caen, France
3 Centre Hospitalier Intercommunal de Créteil, Créteil, France
4 Centre Hospitalier Universitaire (CHU) de Toulouse, Toulouse, France
5 CH de Quimper, Quimper, France
6 CH de Lorient, Lorient, France
7 CHU de Rouen, Rouen, France
8 CH de Draguignan, Draguignan, France
9 Institut de Cancérologie de Bretagne Occidentale, Brest, France
10 CH de La Roche-sur-Yon, La Roche-sur-Yon, France

Date of Submission10-Jun-2020
Date of Decision20-Sep-2020
Date of Acceptance21-Dec-2020
Date of Web Publication25-Oct-2021

Correspondence Address:
Christos Chouaïd,
Service de Pneumologie, Chi Creteil, 40 avenue de Verdun, 94010, Creteil
France
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jcrt.JCRT_784_20

 > Abstract 


Purpose: Few data have been published on the management of patients with synchronous head-and-neck cancer (HNC) and lung cancer (LC). This observational study was undertaken to describe the management of these patients in multiple centers.
Materials and Methods: All patients consecutively diagnosed with synchronous HNC and LC in 26 French centers were included. Information was collected on patients' clinical characteristics, management, and outcomes. Those characteristics and treatments were analyzed descriptively. Kaplan–Meier progression-free and overall survival probabilities were estimated.
Results: The study included 132 patients: 83% male; median age: 63.7 (range: 62.1–65.4) years; all current or former smokers; Eastern Cooperative Oncology Group performance status: 0 or 1 for 21.9% or 65.9% of the patients, respectively; cardiovascular comorbidities: 63%; chronic obstructive pulmonary disease: 33%; and previous cancer: 11%. HNC histology was 98% squamous: 23.5% oral cavity, 26.5% oropharyngeal, 22.0% hypopharyngeal, and 28.0% laryngeal. LCs were mainly localized (47.7% Stage I and 9.9% Stage II): 38% squamous, 49% adenocarcinomas, and 13% others. LC diagnosis impacted HNC management for 38% of the patients, with a median time from HNC diagnosis to first HNC treatment of 40 days. HNC impacted LC management for 48% of the patients, with a median time from LC diagnosis-to-LC treatment interval of 41 days.
Conclusions: Synchronous LC at HNC diagnosis impacted management and outcomes of both cancers. Specific recommendations should be elaborated to improve the management of these patients.

Keywords: Head-and-neck cancer, lung cancer, management, patient care, synchronous cancers



How to cite this URL:
Paleiron N, Gervais R, Rousseau-Bussac G, Game LB, Chiappa AM, Lamy R, Guisier F, Le Caer H, Robinet G, Bizieux A, Chouaïd C, GFPC. Management of patients with synchronous head-and-neck and lung cancers: SYNCHRON GFPC 15-01 study. J Can Res Ther [Epub ahead of print] [cited 2021 Nov 28]. Available from: https://www.cancerjournal.net/preprintarticle.asp?id=329192

FNx01GFPC Study Group: V. Blanc (Arcalib), R. Gervais (Caen, France), F. Vinas, C. Chouaïd (Créteil, France), L. Bigay Game, E. Noel Savina (Toulouse, France), AM Chiappa (Quimper, France), R. Lamy (Lorient, France), F. Guisier, S. Bota (Rouen, France), H. Le Caer (Draguignan, France), G. Robinet (Brest, France), A. Bizieux, M. Marcq (La Roche-sur-Yon, France), E. Huchot, M. André (Saint-Denis de la Réunion, France), R. Corre (Rennes, France), T. Urban (Angers, France), G. Le Garff (Saint-Brieuc, France), J. Crequit (Beauvais), J.-B. Auliac (Créteil, France), P. Thomas (Gap, France), J. Le Treut (Aix-en-Provence, France), A. Vergnenègre (Limoges, France), O. Bylicki (Clamart, France), H. Berard (Toulon, France), S. Vieillot (Perpignan, France), S. Loutski (Creil, France), L. Falchero (Villefranche-sur-Saone, France), S. Chouabe (Charleville, France), J. Vella Boucaud (Reims, France), G. Valette, L. Saramon, R. Marianowski (Brest, France), J. Rousset, N. Paleiron (Brest, France).





 > Introduction Top


The synchronous discovery of lung cancer (LC) and head-and-neck cancer (HNC) is not uncommon because of the shared risk factors for these two locations.[1],[2],[3],[4],[5],[6],[7],[8] The criteria defining a second primary tumor were established by Warren and Gates in 1932, as follows: (1) both tumors are malignant; (2) the two cancers are anatomically separated by normal mucosa; and (3) the possibility that one tumor represents a metastasis of the other is excluded. The index tumor is the first one diagnosed, and the second is any malignancy discovered thereafter. Second tumors are classified as synchronous when they are diagnosed at the same time as the index tumor, for example, during assessment of the tumor site and staging of the index tumor, or within 6 months after discovery of the index tumor. Synchronous cancers imply a global approach for the management of both.[9],[10],[11],[12]

The prognosis depends on the initial staging of the two tumors and the patient's comorbidities. HNC patients' overall survival (OS) has not improved dramatically in recent decades, despite the introduction of new surgical procedures, improved radiotherapy techniques, and the use of chemotherapy.[13] LC, particularly non-small-cell LC, which represents almost 85% of LCs, remains a considerable public health problem.[14],[15],[16] Its management is complex, and the time between the first symptoms, the suspected diagnosis, its confirmation, an extended work-up, and starting treatment is a sequence that involves a wide range of specialists. The HNC–LC association frequency varies according to the series but seems to markedly impact patient survival.[17] In a retrospective study on 937 Asian HNC patients treated between 2000 and 2009, the cumulative incidence of synchronous primary malignancies was 7.2%. Multivariate analyses retained age >60 years, hypopharyngeal index tumor site, or being a heavy drinker as being independently associated with the development of synchronous primary malignancies. Among 830 patients analyzed retrospectively, 350 (42.1%) had synchronous cancers.[13] Only 42.7% of the patients with synchronous cancers had clinical signs, while 26.9% were asymptomatic. In a population-based cohort study on 64,673 patients in the National Cancer Institute Surveillance, Epidemiology, and End Results Registry (1979–2008), the standardized incidence ratio of synchronous primary malignancies was 5.0, corresponding to 2.62 excess cases per 100 patients, and the head-and-neck site had the highest excess risk of a second cancer, followed by the esophagus and lung.[18]

Few published data are available on the management of patients with synchronous HNC–LC. The aim of this observational study was to describe the clinical picture at diagnosis and the management of these patients in multiple specialized centers.


 > Materials and Methods Top


This prospective, observational study was conducted in 26 French centers that had to include at least five consecutive patients satisfying the following criteria: age >18 years, histologically confirmed HNC (nasal fossa, oral cavity, nasopharynx, oropharynx, hypopharynx, or larynx), and discovery of LC during the initial extended work-up or within the following 6 months. Noninclusion criteria were the patient's explicit refusal to allow collection of personal and medical information, and a clinical picture with evidence of lung metastases (multiple large disseminated pulmonary nodules and perfectly round lesions).

The primary objective was to determine the management modalities for the patients (time to treatment onset and types of interventions). The secondary objectives were to describe these tumors at baseline, prognoses, progression-free survival (PFS), OS, and therapeutic changes necessitated by the concomitant presence of the two cancers. For each patient, the following information was collected: demographic characteristics, meaningful medical and surgical history, LC and HNC risk factors, date(s) of diagnoses, the stage of each tumor, and the dates treatments were initiated for each tumor. Finally, the patient's treating physicians had to state whether the concomitant diagnoses of the two cancers had modified the management that would have been applied to each of the locations, i.e., time to starting treatment or management modalities.

Results are expressed as n (%) for dichotomized variables and means 95% confidence intervals (CIs) for continuous variables quantitative in state of dichotomized. The times to starting treatments are expressed as medians then means (95% CI). PFS and OS probabilities were estimated using the Kaplan–Meier method. All statistical analyses were computed with R software.[19] In light of the descriptive design of this study, we did not determine the number of individuals required.

Patients received an information letter and gave their oral consent to participate. The study was approved by the Ethics Committee of the Military Hospital of Brest on January 11, 2016 (no. ID-RCB 2016-A00049-42). The authorization of the National Committee on Informatics and Liberty was obtained on March 14, 2016, and that of the Advisory Committee on the Handling of Health-Related Information on September 17, 2016.


 > Results Top


The main characteristics of the 132 patients with synchronous HNC–LC managed in 26 French centers are reported in [Table 1]. Their median age was 63.7 (62.1–65.4) years; 59.8% active smokers; 40.2% ex-smokers; 9.8% exposed to asbestos; mean body mass index 23.1 (22.3–23.9); 13.7% lost >10% of their body weight during the 3 months preceding diagnosis; Eastern Cooperative Oncology Group performance score performans status (ECOG PS) was 0 or 1, respectively, for 21.9% and 65.9%; and respectively, 63% or 33% had cardiovascular or respiratory comorbidity.
Table 1: Clinical characteristics of 132 patients with synchronous head-and-neck and lung cancers

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Initial characteristics and management

Head-and-neck cancers

The staging of HNC tumors is given in [Table 2]. The extension work-up comprised panendoscopy (81%), cervical (89%) and/or thoracic (92%) computed tomography (CT) scans, bronchial (64%) or esogastroduodenal fibroscopy (35%), positron emission tomography (PET)–CT scan (81%), and/or cervical magnetic resonance imaging (17%). Histological type was squamous cell cancer for 98.4%. The median intervals from histological HNC diagnosis to the therapeutic decision and treatment onset of were, respectively, 15 and 40 days. The main management modalities were surgery alone (37.1%) or with concomitant radiochemotherapy (35.6%) [Table 3].
Table 2: Local–regional extension of the 132 head-and-neck cancers or lung cancer stages

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Table 3: Management of the 132 head-and-neck cancers

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Lung cancer

LCs were identified on thoracic PET or CT scans, rarely by bronchial endoscopy during the work-up for HNCs. The diagnosis was clinical, without histology for 18 patients because of age (n = 4), poor general condition (n = 3), comorbidities (n = 9), or inaccessible tumor (n = 2).

The median intervals between LC diagnosis and the multidisciplinary tumor meeting or treatment onset, respectively, were 16 and 41 days. The management interventions as a function of stage are detailed in [Table 4].
Table 4: Management of the 132 lung cancers

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Impact of having synchronous head-and-neck cancer–lung cancer

According to the physicians managing these patients, having synchronous cancers modified management of HNCs for 37.9% of them and that of LCs for 48.5% [Table 5].
Table 5: Treatment changesa due to synchronous head-and-neck cancer-lung cancer for the 132 patients

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Survival

OS at 1 year was 74.4% (95% CI: 63.7%–87.0%) and 50.4% (95% CI: 37.5%–67.8%) at 2 years. PFS rates at 1 and 2 years, respectively, were longer for HNCs, 88.5% (95% CI: 79.5%–98.6%) and 84.8% (95% CI: 74.0%–97.2%), than for LCs, 71.7% (95% CI: 58.8%–87.5% and 31.6% (95% CI: 18.0%–55.6%).


 > Discussion Top


The results of this multicenter, observational, prospective study showed that the synchronous LC–HNC diagnoses impacted almost a third of the managements of HNCs and half of the LCs. In this series, a majority of patients were in good general condition, with 87.8% having an ECOG PS of 0/1 and only 13.7% with >10% weight loss. The fortuitous LC discovery explains why the disease was still localized in 55.8% of the patients. HNC histology was almost always squamous, whereas LCs exhibited greater variability, including small-cell cancers, which should, in this context, incite systematic biopsies of the lung tumor.

Compared to published findings, the intervals until HNC management were acceptable, unlike those of LCs,[20],[21] even though in this setting, no recommendations or consensus on practical management modalities have been formulated. In all published studies, the coexistence of two tumor sites led to higher morbidity. Among a series of 5846 patients who had undergone lobectomy, 354 with a previous HNC (68 synchronous and 286 metachronous), the lobectomy morbidity and mortality of those with HNCs were, respectively, 21% and 8% versus 13% and 2% without such prior events.[22]

Concerning changes of the planned treatment, ideally, each primary tumor should be treated according to the protocol that would have been applied to an isolated tumor. Keeping that in mind, there are two possibilities: either the protocol for each of the primary tumors can be respected, or it can be modified for one or both of the cancers. In a 9-year observational study including patients with synchronous HNCs,[23] the ideal treatment protocol was modified for 173/350 (49.4%) patients. Those modifications often resulted in poor prognoses for one or both of the synchronous primaries, particularly oropharyngeal, hypopharyngeal, esophageal, and LCs (64 patients). Such treatment changes usually occur when cancers are diagnosed simultaneously and when second cancers are diagnosed during treatment of the first. The reason for changing the therapeutic plan was the difficulty of implementing extensive surgical procedures for two simultaneous cancers in adjacent sites. Often, radiotherapy can include two cancer sites in the same radiation zone. In addition, in that study, patients with multiple cancers were often in poor general health, an additional argument further supporting changing the therapeutic plan.[24]

Some authors reported that LCs were the most common second primary tumors for patients with hypopharyngeal, oropharyngeal, and laryngeal index tumors.[13],[16],[20] Among a series of 77 patients with primary cancers of the larynx and lung, 35 were supraglottic, 27 glottic–supraglottic, and only 15 glottic.[25] LCs were detected after HNC diagnosis in 53 patients before in 6, and onset was synchronous in the remaining 18. Our data are consistent with those findings, but many of our patients had oral cavity cancers (23%), suggesting that this site is also associated with synchronous LCs.

In France, for LC patients, the mean interval between the first suspicious imaging and histological confirmation was 21.5 ± 17.6 days, and the interval between that imaging and a therapeutic plan was 13.5 ± 10.7 days. Those intervals seem shorter for metastatic stages than localized or localized advanced disease.[20],[21] A more standardized approach based on the extension and functional work-up common to both cancers (including at least brain imaging and pulmonary function tests) followed by a tumor multidisciplinary meeting, could shorten the time to treatment onset.[25],[26],[27]

This analysis is limited to synchronous LC, i.e., LC diagnosed at the same time as the HNC or within 6 months of the diagnosis of HNC. Beyond 6 months, it is a metachronous tumor, realizing a completely different clinical situation. In an Australian study, monocentric analysis, over 12 years, among the 597 patients treated for HNC, 15 patients had a synchronous LC and 19 a metachronous LC, with a tendency for better OS for patients with a synchronous lesion (15 vs. 11 months, P = 0.11).[11]

In an another database analysis in the same period in The Netherlands, 181 eligible patients were identified, comprising 40 synchronous and 141 metachronous LC. Patients presenting with synchronous LC were more likely to have early-stage disease, as compared to patients with metachronous LC (45% vs. 28%, respectively; P = 0.036).[12]

This study has several limitations. Although the participating centers were asked to include all their consecutive patients meeting the inclusion criteria, it is possible that inclusion in each center was not exhaustive, with an overrepresentation of patients in good general condition. In addition, the extension work-ups of these synchronous tumors were somewhat heterogeneous, with a wide variety of management modalities, underscoring the clinical complexity of managing these patients.

Overall, our data and the literature have implications for the management of these patients with HNC and synchronous LC. A majority of LCs were diagnosed at an early stage, and patients seem to be equally at risk from LC- and HNC-related death. Treatment decisions are likely to be complex, but a multidisciplinary should make to avoid delays in the management of each cancer and allow a good coordination between the various stakeholders.


 > Conclusions Top


Herein, we described the clinical characteristics and treatment modalities for patients with synchronous HNC–LC. They confirmed the importance of obtaining histological confirmation of the malignancy of the two tumors and highlighted the impact of having these simultaneous cancers on suspicion-to-confirmation and treatment-onset intervals.

Acknowledgments

This study was an academic study conducted by the Groupe Français de Pneumo-Cancerologie.

Financial support and sponsorship

This study received academic grants from Pierre Fabre and Boehringer Ingelheim.

Conflicts of interest

There are no conflicts of interest.



 
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    Tables

  [Table 1], [Table 2], [Table 3], [Table 4], [Table 5]



 

 
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