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. 2022 Feb 15;17(2):e0263773.
doi: 10.1371/journal.pone.0263773. eCollection 2022.

Secondary primary malignancy in patients with head and neck squamous cell carcinoma: 27-year experience from the perspective of diagnostic tools

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Secondary primary malignancy in patients with head and neck squamous cell carcinoma: 27-year experience from the perspective of diagnostic tools

Shih-Wei Wang et al. PLoS One. .

Abstract

Background: The survival rate of head and neck squamous cell carcinoma (HNSCC) patients with secondary primary malignancy (SPM) showed no significant improvement for decades, however, the impact of advances in diagnostic tools is rarely mentioned. This study investigated the clinical characteristic of HNSCC with SPM over a 27-year period especially from the perspective of diagnostic tools.

Methods: This study evaluated 157 HNSCC patients with SPM. The patients were divided into two groups according to the time of SPM diagnosis (Group A:1992-2003; Group B: 2004-2014). Age, gender, stage of first primary malignancy (FPM), SPM interval, overall survival, and disease-free survival were compared between groups.

Results: Group B had significantly more SPM developed rate (p = 0.002), more SPM patients with advanced stage of FPM (p = 0.001), synchronous SPM (p = 0.006), and shorter SPM interval (p<0.001) compared to Group A. The survival rate in Group B was not significantly better than Group A.

Conclusion: Among patients diagnosed with HNSCC recently, more SPMs are diagnosed in a shorter time interval and in a more advanced stage. The overall advances in diagnostic tools cannot significantly improve SPM survival, however, it enables more patients to receive corresponding treatment.

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Conflict of interest statement

The authors declare no competing interests.

Figures

Fig 1
Fig 1. Flowchart of inclusion and exclusion procedure in each group.
Fig 2
Fig 2. Kaplan-Meier survival curves for first primary malignancy subsites in cases who developed secondary primary malignancy.
Fig 3
Fig 3. Kaplan-Meier survival curves for different second primary malignancy (SPM) sites in 157 SPM patients.
Fig 4
Fig 4. Kaplan-Meier survival curves for synchronous and metachronous second primary malignancy (SPM) in Group A and Group B.

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