Voice and quality of life in patients with recurrent respiratory papillomatosis in a northern Sweden cohort

"A systematic literature review of the epidemiology, clinical, economic and humanistic burden in recurrent respiratory papillomatosis"

INTRODUCTION

Recurrent respiratory papillomatosis (RRP) is a chronic disease caused by human papillomavirus (HPV), characterized by recurrent papillomas in the respiratory tract. Presenting as either juvenile-onset RRP (JoRRP) or adult-onset RRP (AoRRP), the severity of the disease is subjective and unpredictable. Lack of curative therapies necessitates disease management involving repeated surgical removal of lesions. The review aimed to assess the clinical, humanistic and economic burden associated with RRP.

METHODS

Systematic literature reviews of Embase®, MEDLINE® and Cochrane databases were conducted for epidemiology, clinical, humanistic, and economic burden, from database inception to November 30, 2022. Conference abstracts were also searched (2019-2022). Key inclusion criteria consisted of juveniles or adults with RRP/laryngeal papillomatosis, with no restriction on study country, interventions, or comparators. Outcomes of interest included incidence, prevalence, risk factors, symptomatic presentation, HPV genotype, cost burden, resource use and health related quality of life (HRQoL).

RESULTS

In JoRRP, the incidence rate ranged from 0.2-2.1 per 100,000 and the prevalence rate ranged from 0.8-4.3 per 100,000. Incidence and prevalence of AoRRP were 0.2-3.9 and 0.4-8.4 per 100,000, respectively. Limited studies reported the subsequent impact of introducing national prophylactic HPV immunisation programs on JoRRP epidemiology, but where available, they were associated with significantly reduced incidence rates. Symptomatic presentations were diverse, with voice impact and breathing difficulties commonly reported. More aggressive disease was linked to earlier age of onset and HPV11 genotype. Healthcare utilisation was largely driven by surgical interventions, due to lack of curative treatments. Cost burden was substantial, with JoRRP associated with triple the costs of AoRRP in the US. Patients with JoRRP and AoRRP experienced considerable HRQoL impairment, particularly relating to voice disorder.

CONCLUSION

Extensive clinical, humanistic and economic disease burden was reported for both JoRRP and AoRRP, as it is a chronic condition, with propensity to recur and spread. Feasibility of improving HPV prophylactic vaccination coverage against HPV6/HPV11 should be explored to reduce incidence, alongside efforts to improve treatment of JoRRP and AoRRP patients. Despite the existing literature, RRP remains a poorly understood disease, and future research on risk factors and medical options are needed.

Quality of Life in Recurrent Respiratory Papillomatosis Patients after Vocal Fold Surgery: An In-Depth Exploration

INTRODUCTION

This study explores the quality of life among patients with recurrent respiratory papillomatosis (RRP) after vocal fold surgery as measured by the outcome scores of the Voice Handicap Index (VHI) and the Distress Thermometer and Problem List in Patients with Recurrent Respiratory Papillomatosis (DT&PL). Differences in quality of life were explored within the independent variables age, surgical frequency, weeks since last vocal fold operation, gender, HPV type, surgical location, vaccination with Gardasil©, and a patient's request to speak with a speech-language pathologist.

METHODS

A single-center, observational cohort study was conducted using VHI and DT&PL scores and demographic and clinical data obtained from patient files. Inclusion criteria were a confirmed HPV type, age 18 years or older, the ability to fill in both questionnaires in Dutch, and having undergone at least one surgical procedure to remove laryngeal papilloma. Relationships of the independent variables with VHI and Distress Thermometer (DT) scores were explored using univariable and multivariable regressions and linear regression models.

RESULTS

Of 271 RRP patients, 100 met the inclusion criteria and responded to requests to fill in both questionnaires with a minimum of 12 weeks after their last operation. Our study showed a statistically significant negative relationship between age and VHI scores (p = 0.02) in the univariable, and multiple linear regressions (p = 0.01), indicating that patients experienced fewer self-perceived functional voice disabilities with each increase in age. A parallel negative relationship is seen between the variables age (p = 0.03) and DT scores. Our results showed a statistically significant positive relationship between the number of vocal fold surgeries and DT scores (p = 0.03).

CONCLUSION

The results of this study show a significant relationship between age, surgical frequency, and quality of life in patients with RRP. Older patients have lower Voice Handicap Index (VHI) and Distress Thermometer (DT) scores, indicating fewer self-perceived voice and disease-related quality of life problems. Conversely, a rise in surgical frequency is significantly associated with higher DT scores, reflecting greater disease-related distress.

Human papilloma virus (HPV) vaccination is associated with reduced number of surgical treatments, an observational study on recurrent respiratory papillomatosis in Northern Sweden

BACKGROUND

Recurrent respiratory papillomatosis (RRP) is a wart-like lesion mainly affecting the larynx, caused by human papillomavirus (HPV) genotypes 6 and 11. The disease affects both children and adults, and there is no cure. Surgery is the current symptom-relieving treatment; however, HPV vaccination is used as an adjuvant treatment.

AIMS AND OBJECTIVES

The aims were to study effects of HPV vaccination in RRP cases and to compare juvenile-onset to adult-onset disease and high treatment frequency (TF) to low TF cases.

MATERIAL AND METHODS

Medical records of RRP patients were studied from May 2006 to January 2023. Eighty-five RRP cases, tested for HPV genotypes with PapilloCheck®, were included. Vaccination- onset- and treatment analysis were performed.

RESULTS

Twelve percent of the cases were vaccinated. The number of surgeries decreased from 2.0 to 0.8/year after HPV vaccination. Most cases had an adult-onset and less than one treatment per year. Juvenile-onset cases had a higher vaccination treatment ratio compared to adult-onset.

CONCLUSIONS

HPV vaccination was associated with a lower number of treatments per year, supporting the use of vaccination as an adjuvant treatment.

SIGNIFICANCE

Vaccination as adjuvant treatment to surgery may lead to increased quality of life for RRP patients and saved healthcare resources.

Smoking and Carcinoma Trends in Recurrent Respiratory Papillomatosis Patients

INTRODUCTION

Recurrent respiratory papillomatosis (RRP) is a chronic disease of the upper respiratory tract caused by human papillomavirus types 6 and 11. The disease course is characteristically unpredictable, ranging from spontaneous remission to aggressive, recurrent disease. Thus, management is often challenging and requires unique approaches tailored to each individual patient. While recent literature has described risk factors for more aggressive disease, few sources have investigated the impact of smoking on RRP disease course and risk for malignant transformation.

METHODS

A retrospective chart review was conducted for adult RRP patients evaluated at an academic tertiary care center between 2005 and 2020. A total of 188 patients were identified. Demographic and clinical data were collected, including smoking and alcohol history, HPV subtype, history of dysplasia and/or carcinoma, voice handicap index scores, Derkay scores, debulkings (in office and operating room), and days to papilloma recurrence.

RESULTS

Malignant degeneration in RRP occurred in 16.3% of smokers and 3.6% of nonsmokers. Smokers who developed carcinoma had less debulkings per years of evaluation than those not developing carcinoma (0.21 vs 0.92, P = .004). Additionally, patients that either presented with or developed carcinoma during their course had a higher pack-year smoking history (18.0 vs 12.21, P = .0002). No difference in days to recurrence or inter-surgical interval was demonstrated between smokers and nonsmokers.

CONCLUSIONS

The report demonstrates that smoking can increase the risk of malignant transformation in RRP patients.

Application of haemoglobin absorption spectral imaging in laryngeal papilloma surgery

OBJECTIVE

This study compares the detection rates of haemoglobin absorption spectral imaging and white light imaging in laryngeal papilloma surgery.

METHODS

Seventeen patients with laryngeal papilloma who underwent surgery in our department from September 2019 to September 2021 were selected. All patients underwent carbon dioxide laser surgery under a microscope. The lesion sites were explored in white light mode and haemoglobin absorption spectral imaging mode. The pharynx and larynx anatomical sites were evaluated using Derkay's all-position scoring system. The numbers and scores for lesions observed in the two modes were compared.

RESULTS

In 17 cases, there were statistically significant differences in the numbers of laryngeal papillomas (Derkay score) detected by white light mode and haemoglobin absorption spectral imaging mode. In 9 of 17 patients (52.94 per cent), the haemoglobin absorption spectral imaging mode showed additional diseased tissues.

CONCLUSION

The haemoglobin absorption spectral imaging mode can dynamically identify diseased tissues in carbon dioxide laser surgery under a microscope and improve the laryngeal papilloma detection rate.

HPV Knowledge Retention and Concurrent Increase in Vaccination Rates 1.5 Years After a Novel HPV Workshop in Medical School

Comprehensive education regarding human papillomavirus (HPV) pathogenesis, vaccination, and patient counseling are not routinely included in the medical school curriculum; consequently, student and provider knowledge, especially concerning head and neck pathology, remains low. The objective of this study was to demonstrate long-term retention of HPV knowledge and positive attitudes towards HPV vaccination after attending our novel HPV workshop, with a focus on knowledge of oropharyngeal cancer. A follow-up survey was administered to medical students 1.5 years after the initial completion of the workshop. HPV vaccination records from the student-led clinic were collected from the immunization information system. Awareness that HPV causes oropharyngeal cancer was present in 33% of medical students pre-curriculum; immediate and long-term post-curricular awareness of this association remained at 90% or higher (p < 0.0001). Comfort with HPV counseling, having enough information to recommend the vaccine, and knowledge of HPV malignancies, symptoms, transmission, and vaccination schedule remained persistently elevated over pre-curriculum scores (p < 0.05). Long-term knowledge scores were also higher than a control group of medical students at the same stage of training who had never participated in the workshop (p < 0.05). HPV vaccination rates at the medical school's student-run clinic also increased after the curriculum, from an average of 1.89 HPV vaccines given per clinic to 3.55 (p = 0.001). This study demonstrates that knowledge and positive attitudes were maintained 1.5 years after participating in this HPV curriculum during students' preclinical years of medical school. Additionally, an increase in HPV vaccination rates occurred at a student-led clinic, indicating a positive clinical impact on the curriculum.

Recurrent Respiratory Papillomatosis: Quality of Life Data from an International Patient Registry

OBJECTIVES

Quality of life studies in recurrent respiratory papillomatosis (RRP) have traditionally relied upon clinician-designed survey instruments. This study's objective is to report quality of life outcomes from a patient-designed questionnaire.

METHODS

Patients who provided health information and completed a quality of life questionnaire were identified from the RRPF-CoRDS patient registry. Demographic, clinical, and quality of life measures were collected. Means and standard deviations were calculated for continuous data, and frequencies and percentages were calculated for categorical data. Outcomes for patients with juvenile-onset RRP (JORRP) and adult-onset RRP (AORRP) were compared using Student's t-tests for continuous data and χ² analyses for categorical data.

RESULTS

Seventy-three patients with RRP were identified (JORRP: 32; AORRP: 41). Common clinical symptoms included raspy voice (78.1%) and dyspnea (61.6%). The majority (97.3%) of patients reported feeling debilitated by their diagnosis, and 94.5% of patients reported avoiding participation in career and/or social activities due to their voice quality. Due to their RRP, 65.7% reported missing at least five work days each month. Social anxiety was reported in 79.5% of patients, though only 28.8% of the cohort reported utilizing mental health services. The median (range) lifetime number of surgeries received was 20 (1 - 3). Most patients (57.5%) reported paying at least 5% of their annual income towards RRP-related medical care.

CONCLUSION

RRP presents high mental and fiscal burden. Our results highlight data from a quality of life questionnaire designed by RRP patients, and may help to elucidate potential disconnects between what clinicians and RRP patients consider most impactful.

LEVEL OF EVIDENCE

4 Laryngoscope, 2022.

A Novel In Vivo Model of Laryngeal Papillomavirus-Associated Disease Using Mus musculus Papillomavirus

Recurrent respiratory papillomatosis (RRP), caused by laryngeal infection with low-risk human papillomaviruses, has devastating effects on vocal communication and quality of life. Factors in RRP onset, other than viral presence in the airway, are poorly understood. RRP research has been stalled by limited preclinical models. The only known papillomavirus able to infect laboratory mice, Mus musculus papillomavirus (MmuPV1), induces disease in a variety of tissues. We hypothesized that MmuPV1 could infect the larynx as a foundation for a preclinical model of RRP. We further hypothesized that epithelial injury would enhance the ability of MmuPV1 to cause laryngeal disease, because injury is a potential factor in RRP and promotes MmuPV1 infection in other tissues. In this report, we infected larynges of NOD scid gamma mice with MmuPV1 with and without vocal fold abrasion and measured infection and disease pathogenesis over 12 weeks. Laryngeal disease incidence and severity increased earlier in mice that underwent injury in addition to infection. However, laryngeal disease emerged in all infected mice by week 12, with or without injury. Secondary laryngeal infections and disease arose in nude mice after MmuPV1 skin infections, confirming that experimentally induced injury is dispensable for laryngeal MmuPV1 infection and disease in immunocompromised mice. Unlike RRP, lesions were relatively flat dysplasias and they could progress to cancer. Similar to RRP, MmuPV1 transcript was detected in all laryngeal disease and in clinically normal larynges. MmuPV1 capsid protein was largely absent from the larynx, but productive infection arose in a case of squamous metaplasia at the level of the cricoid cartilage. Similar to RRP, disease spread beyond the larynx to the trachea and bronchi. This first report of laryngeal MmuPV1 infection provides a foundation for a preclinical model of RRP.

Voice Outcomes Following Multiple Surgeries for Recurrent Respiratory Papillomatosis

OBJECTIVES

Recurrent Respiratory Papillomatosis (RRP) is a rare disease caused by the human papilloma virus that presents as warty, exophytic growths in the upper airway. RRP in the larynx can lead to severe airway obstruction and voice changes. It is clinically known that patients with RRP frequently experience dysphonia. The purpose of this study was to assess the impact of multiple surgical treatments on RRP patients' voice outcomes, and to determine whether a higher number of repeated surgeries lead to decreased voice quality.

METHODS

A retrospective cohort study was conducted of adult RRP patients (n = 23) who underwent multiple surgeries. Group 1 included patients (n = 11) who had <5 surgeries (range 2-4 surgeries) and Group 2 included patients (n = 12) who had ≥5 surgeries (range 5-50+ surgeries). Voice recordings were selected from the following clinic visits: initial office visit (initial presurgery), first postsurgery, and the last clinic encounter(s) with no immediate planned surgery. Blinded auditory-perceptual ratings along with cepstral and spectral acoustic measures assessed voice severity.

RESULTS

There was significant improvement from the initial presurgery visit compared to each postoperative visit over time for all voice outcome measures for both Group 1 and Group 2. The results of the study indicated that the number of surgeries did not significantly affect mean postoperative voice outcomes, and there were no significant differences between patient groups for voice quality over time.

CONCLUSIONS

The results of this study suggest that RRP patients' voice quality may not suffer cumulative negative effects when using modern tissue-sparing surgical techniques.

Safe use of systemic bevacizumab for respiratory recurrent papillomatosis in two children

Recurrent respiratory papillomatosis can be a devastating condition for a child, with severe consequences. Currently, there is no proven successful medical treatment. We describe the use of systemic bevacizumab to treat two children affected by aggressive recurrent respiratory papillomatosis. Respiratory symptoms and quality of life improved dramatically in both patients, without observing any toxicity. The only complication was mild proteinuria. Systemic bevacizumab is a promising adjuvant treatment in aggressive recurrent respiratory papillomatosis in children. It is effective and well tolerated. Further studies are needed to establish the optimal dosing frequency and duration of therapy. Laryngoscope, 129:1001-1004, 2019.

The usefulness of narrow band imaging in the assessment of laryngeal papillomatosis

OBJECTIVES/HYPOTHESIS

Recurrent respiratory papillomatosis (RRP) is a benign disease caused by human papillomavirus 6 and 11. The characteristic feature of this disease are wart-like lesions covering the respiratory epithelium with a predilection for the larynx. There is no curative treatment for the disease. The goal of the treatment is a total surgical removal of the papillomatous lesions in order to reduce the number of relapses. Therefore, a good visualization method of papillomas is crucial during surgery. The aim of the study was to compare the accuracy of narrow band imaging (NBI) to the use of white light alone in detecting RRP.

METHODS

The study was carried out between April 2013 and November 2015 at Poznan University of Medical Sciences, Department of Otolaryngology, Poland. Rigid endoscopy with conventional white light (WL) and NBI (CV-260SL processor and CLV- 260SL light source, Olympus Optical Co. Ltd, Tokyo, Japan) was performed in all patients during direct laryngoscopy. All anatomical sites of the larynx and trachea were assessed using the Dikkers scale and Derkay total site scoring system with WL and NBI. The consensus was reached as to the number of lesions seen in WL compared to NBI.

RESULTS

During 36 microlaryngoscopies, the number of papillomas detected in the larynx (by Derkay total site score) differed significantly between white light endoscopy and NBI (Wilcoxon test p = 0.000655). In endoscopy with NBI, a mean of 1.3 more papillomas in Derkay total site score was detected in comparison to white light endoscopy NBI showed additional areas of diseased tissue in 15/36 (41.67%) patients.

CONCLUSIONS

NBI as an additional tool during microlaryngoscopy can improve the detection of papillomatous lesions.

Lymphocyte profile and cytokine mRNA expression in peripheral blood mononuclear cells of patients with recurrent respiratory papillomatosis suggest dysregulated cytokine mRNA response and impaired cytotoxic capacity

Objectives

Recurrent respiratory papillomatosis (RRP) is a relatively rare, chronic disease caused by Human Papilloma Virus (HPV) 6 and 11, and characterized by wart‐like lesions in the airway affecting voice and respiratory function. The majority of HPV infections are asymptomatic and resolve spontaneously, however, some individuals are afflicted with persistent HPV infections. Failure to eliminate HPV 6 and 11 due to a defect immune responsiveness to these specific genotypes is proposed to play a major role in the development of RRP.

Methods

We performed a phenotypic characterization of peripheral blood mononuclear cells (PBMC) collected from 16 RRP patients and 12 age‐matched healthy controls, using immunoflow cytometry, and monoclonal antibodies against differentiation and activation markers. The cytokine mRNA profile of monocytes, T helper‐, T cytotoxic‐, and NK cells was assessed using RT‐qPCR cytokine analysis, differentiating between Th1‐, Th2‐, Th3/regulatory‐, and inflammatory immune responses.

Results

We found a dominance of cytotoxic T cells, activated NK cells, and high numbers of stressed MIC A/B expressing lymphocytes. There was an overall suppression of cytokine mRNA production and an aberrant cytokine mRNA profile in the activated NK cells.

Conclusion

These findings demonstrate an immune dysregulation with inverted CD4⁺/CD8⁺ ratio and aberrant cytokine mRNA production in RRP patients, compared to healthy controls.

Systemic Bevacizumab for Recurrent Respiratory Papillomatosis: A Single Center Experience of Two Cases

BACKGROUND Recurrent respiratory papillomatosis (RRP), caused by human papillomavirus (HPV), is the most common benign neoplasm of the larynx and central airways. RRP has a significant impact on quality life and high annual costs to healthcare. Currently, there is no cure for RRP, leading to repeated debulking operations for symptomatic palliation. Various local adjuvant therapies have also been studied with mixed efficacy. HPV oncogene products increase expression of vascular endothelial growth factor (VEGF) providing a potential target for treatment of RRP. Bevacizumab, a recombinant monoclonal antibody that inhibits VEGF, has shown efficacy in patients with localized disease. CASE REPORT We present two cases of extensive airway and parenchymal RRP successfully managed with systemically administered bevacizumab, a recombinant monoclonal antibody that inhibits VEGF. CONCLUSIONS Bevacizumab has shown efficacy in patients with localized disease, but here we illustrate the potential of bevacizumab for patients with extensive parenchymal burden as well as provide a brief review of the literature.

Validation of the Distress Thermometer and Problem List in Patients with Recurrent Respiratory Papillomatosis

Objective

There is no specific clinical tool for physicians to detect psychosocial and physical distress or health care need in patients with recurrent respiratory papillomatosis (RRP). The main aim of this study is to validate the RRP-adapted Distress Thermometer and Problem List (DT&PL).

Study Design

Prospective cross-sectional questionnaire research.

Setting

Academic tertiary care medical centers in Groningen, Netherlands, and Helsinki, Finland.

Subjects and Methods

Ninety-one juvenile- and adult-onset RRP patients participated from the departments of otorhinolaryngology–head and neck surgery of the University Medical Center Groningen, Netherlands, and Helsinki University Hospital, Finland. The Hospital Anxiety and Depression Scale was used as the gold standard.

Results

A DT cutoff score ≥4 gave the best sensitivity and specificity. Thirty-one percent of patients had significant distress according to the DT cutoff. Significantly more patients with a score above than under the cutoff had a referral wish. The PL appeared to be reliable. Patients’ opinions on the DT&PL were largely favorable.

Conclusion

The Dutch and Finnish versions of the DT&PL are valid, reliable screening tools for distress in RRP patients.

Multidimensional vocal assessment after laser treatment for recurrent respiratory papillomatosis

OBJECTIVES/HYPOTHESIS

Recurrent respiratory papillomatosis (RRP) is a benign epithelial tumor that exhibits a high frequency of recurrence. This study assesses the vocal function after laser treatment for RRP, particularly in relation to the frequency of surgery.

STUDY DESIGN

Retrospective study.

METHODS

Thirty RRP patients who underwent laser surgery that controlled the tumor were included. Preoperative and postoperative Grade, Roughness, Breathiness, Asthenia, and Strain Scale, videostroboscopic findings, aerodynamic and acoustic parameters, and self-assessment questionnaires were measured and compared with an age- and sex-matched control group. Subsequently, to evaluate the association between postoperative voice quality and the number of surgeries, the patients were divided into three groups (group 1: single surgery, group 2: 2-5 surgeries, group3: >6 surgeries), and comparative multidimensional vocal assessments were performed.

RESULTS

The mean number of surgeries was 3.4 (range, 1-8). Although all patients exhibited poorer vocal function than the control group preoperatively, they showed improvement in postoperative subjective and objective parameters. However, four patients who underwent one surgery with relatively aggressive ablation exhibited vocal cord scarring and deteriorated objective parameters. All remaining patients showed voice quality that was on par with the control group. Subgroup analysis proved no association between post-therapeutic voice quality and the patient characteristics, including preoperative staging and the number of surgical treatments performed.

CONCLUSIONS

RRP patients can achieve a close to normal voice with high satisfaction even after recurrent surgical treatment when ablation of a subepithelial lesion using sufficient laser energy is adequate.

LEVEL OF EVIDENCE

3b Laryngoscope, 127:679-684, 2017.

Economic impact of recurrent respiratory papillomas in a UK adult population

Objective:

To calculate the financial burden of recurrent respiratory papilloma. This study is UK-based, where up until now no financial estimates have been calculated for this group of patients.

Background:

Recurrent respiratory papilloma is caused by the human papilloma virus (subtypes 6 and 11). The burden for the patient and the healthcare system is significant given the recurrent nature of the disease.

Methods:

Data were collected, using a questionnaire completed during routine clinical follow up, from a single centre managing recurrent respiratory papilloma in Glasgow, Scotland. Cost information was sourced from the Scottish Government's Information Services Division.

Results:

Fourteen patients with active recurrent respiratory papilloma between 2013 and 2014 were identified. The direct measurable cost to NHS Greater Glasgow and Clyde amounted to £107 478.

Conclusion:

Recurrent respiratory papilloma is a benign condition, but the financial implications of diagnosis are significant. Recurrent respiratory papilloma has a natural history of relapse and remission, and patients may require healthcare input over a period of several years.

Anatomic Derkay Score Is Associated with Voice Handicap in Laryngeal Papillomatosis in Adults

OBJECTIVE

The Derkay staging system quantifies recurrent respiratory papillomatosis (RRP) severity based on involvement of laryngeal structures. Despite its broad use in the laryngology literature, the association between Derkay score and voice-related quality of life has not previously been studied. It is hypothesized that Derkay score positively correlates with the Voice Handicap Index-10 (VHI-10).

STUDY DESIGN

Case series with chart review.

SETTING

Tertiary medical center.

SUBJECTS AND METHODS

Forty-six adult RRP patients treated from 2007 to 2013 at a tertiary medical center were included. Anatomic Derkay scores at the time of each RRP procedure were calculated. VHI-10 scores obtained within 30 days preceding the procedures were used to assess for correlation between Derkay staging system and VHI-10.

RESULTS

Ninety-three procedures performed on 46 patients met inclusion criteria. Mean Derkay score was 11.9 (range, 2-28), and mean VHI-10 was 18.0 (range, 0-40). There was a significant positive correlation between Derkay score and VHI-10 (Spearman coefficient r = 0.42, P < .0001).

CONCLUSION

The anatomic burden of RRP as assessed by Derkay staging system is positively correlated with voice-related quality of life as quantified by the VHI-10.

Recurrent respiratory papillomatosis in northern Sweden: clinical characteristics and practical guidance

CONCLUSION

Recurrent respiratory papillomatosis (RRP) patients with high surgical treatment frequency (≥ 1/year, HF) were significantly younger and had a more widespread laryngeal disease compared to a low frequency treated group (< 1 treatment/year, LF). This study confirms the existence of a clinical RRP group, not primarily related to HPV sub-type, but more care-intensive and in need of more vigilant follow-up.

OBJECTIVES

RRP is associated with high morbidity due to its influence on breathing and voice. The purpose of this study was to characterize RRP patients in northern Sweden and investigate possible predictor factors affecting therapeutic needs.

METHOD

Patients from the regional referral area (northern Sweden) were categorized for age, disease duration, juvenile or adult onset, profile of disease development, number of surgical sessions in relation to disease duration, laryngeal deposition of papilloma, gender, and HPV sub-types, in order to identify patients with increased need for frequent surgical treatment.

RESULTS

The median age of the RRP patients (n = 48) was 44.5 years; 34 (71%) were males and 14 (29%) females, most were infected with HPV 6. Patients with high surgical treatment frequency/year were significantly younger and showed more widespread papillomatous vegetation in the larynx, compared to the low frequency treated group.