Volume 43, Issue 3 pp. 956-966
ORIGINAL ARTICLE

Risk factors for the development of high-grade dysplasia and carcinoma in patients with laryngeal squamous cell papillomas: Large retrospective cohort study

Daša Gluvajić MD

Corresponding Author

Daša Gluvajić MD

Department of Otorhinolaryngology and Cervicofacial Surgery, University Medical Centre, Ljubljana, Slovenia

Correspondence

Daša Gluvajić, Department of Otorhinolaryngology and Cervicofacial Surgery, University Medical Centre, Zaloška Street 2, 1000 Ljubljana, Slovenia.

Email: [email protected]

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Lea Hošnjak PhD

Lea Hošnjak PhD

Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Slovenia

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Vida Stegel PhD

Vida Stegel PhD

Department of Molecular Diagnostics, Institute of Oncology, Ljubljana, Slovenia

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Srdjan Novaković PhD

Srdjan Novaković PhD

Department of Molecular Diagnostics, Institute of Oncology, Ljubljana, Slovenia

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Nina Gale MD, PhD

Nina Gale MD, PhD

Institute of Pathology, Faculty of Medicine, University of Ljubljana, Slovenia

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Mario Poljak MD, PhD

Mario Poljak MD, PhD

Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Slovenia

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Irena Hočevar Boltežar MD, PhD

Irena Hočevar Boltežar MD, PhD

Department of Otorhinolaryngology and Cervicofacial Surgery, University Medical Centre, Ljubljana, Slovenia

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First published: 01 December 2020
Citations: 6
Section Editor: Eben Rosenthal

Funding information: Javna Agencija za Raziskovalno Dejavnost RS, Grant/Award Number: P3-0083; University Medical Centre, Ljubljana, Slovenia, Grant/Award Number: 20150093

Abstract

Background

The incidence and risk factors for the development of high-grade dysplasia (HG-D) and laryngeal squamous cell carcinoma (LSCC) were assessed in patients with laryngeal squamous cell papillomas (LSP).

Methods

Clinical data, human papillomaviruses (HPV) typing, HPV E6/E7 mRNA in situ hybridization, and sequencing of host genes in LSP biopsies of 163 patients were analyzed.

Results

Progression to HG-D and LSCC was identified in 21.5% and 4.3% of LSP patients, respectively. A more advanced age at LSP onset and lack of HPV infection were detected as risk factors for the development of HG-D and LSCC (P < .05). The identification of HG-D was associated with its progression to LSCC (P < .05). Host gene mutations were identified in 3 of 7 patients with LSCC.

Conclusions

The histological monitoring of LSP and HPV typing are necessary for early detection of epithelial changes. Further research is needed to elucidate the role of host gene mutations in LSCC transformation.

CONFLICT OF INTEREST

The authors reported no conflicts of interest.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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