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[Recurrent laryngeal papillomatosis]. HNO 2023; 71:77-82. [PMID: 36477391 PMCID: PMC9895037 DOI: 10.1007/s00106-022-01250-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/14/2022] [Indexed: 12/12/2022]
Abstract
Human papillomaviruses (HPV) 6 and 11 cause 90% of recurrent laryngeal papillomatosis (RLP). It is unclear whether recurrences are caused by new infections or the spread of infected cells. Symptomatic and sometimes curative treatment is laser surgery or conventional microsurgical removal. RLP surgery aims to relieve shortness of breath and improve the voice. Patients (especially children) are affected by voice problems, repetitive surgeries, pulmonary manifestations, and psychological trauma. Vaccination with Gardasil 9 (Merck & Co., Rahway, NJ, USA) prevents new infections with HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58 and induces vaccine antigen-specific antibodies and CD4+ T helper cells. According to current studies, RLP can be avoided with prophylactic vaccination. The treatment is associated with a general vaccination risk (European Medicines Agency approval: girls and boys from 9 years). Studies also show that the vaccine after removal of HPV-associated neoplasia/papilloma prevents recurrences. Extension of the vaccination recommendation to prevent recurrences of HPV-associated diseases in men may promote applicability and herd immunity. For rare and treatment-refractory cases with laryngotracheal involvement, systemic therapy with bevacizumab (e.g. Avastin; Genentech, San Francisco, CA, USA), a VEGF antibody, is a promising adjuvant treatment option.
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Meites E, Stone L, Amiling R, Singh V, Unger ER, Derkay CS, Markowitz LE. Significant Declines in Juvenile-onset Recurrent Respiratory Papillomatosis Following Human Papillomavirus (HPV) Vaccine Introduction in the United States. Clin Infect Dis 2021; 73:885-890. [PMID: 33621333 PMCID: PMC8380742 DOI: 10.1093/cid/ciab171] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND Juvenile-onset recurrent respiratory papillomatosis (JORRP) is a rare and serious disease caused by human papillomavirus (HPV) presumably acquired during vaginal delivery. HPV vaccination of females through age 26 years, recommended in the United States since 2006, can prevent HPV transmission. We assessed trends in JORRP cases before and after HPV vaccine introduction in the United States. METHODS Case-patients were identified from 26 pediatric otolaryngology centers in 23 U.S. states. Demographics and clinical history were abstracted from medical records. Case-patients were grouped by year of birth, and birth-cohort incidences were calculated using number of births from either national or state-level natality data from the 23 states. We calculated incidence rate ratios (IRR) and 95% confidence intervals (CI) in 2-year intervals. RESULTS We identified 576 U.S. JORRP case-patients born in 2004-2013. Median age at diagnosis was 3.4 years (interquartile range: 1.9, 5.5). Number of identified JORRP case-patients declined from a baseline of 165 born in 2004-2005 to 36 born in 2012-2013. Incidence of JORRP per 100 000 births using national data declined from 2.0 cases in 2004-2005 to 0.5 cases in 2012-2013 (IRR = 0.2, 95% CI = .1-.4); incidence using state-level data declined from 2.9 cases in 2004-2005 to 0.7 cases in 2012-2013 (IRR = 0.2, 95% CI = .1-.4). CONCLUSIONS Over a decade, numbers of JORRP case-patients and incidences declined significantly. Incidences calculated using national denominator data are likely underestimates; those calculated using state-level denominator data could be overestimates. These declines are most likely due to HPV vaccination. Increasing vaccination uptake could lead to elimination of this HPV-related disease.
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Affiliation(s)
- Elissa Meites
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Laura Stone
- Department of Otolaryngology-Head and Neck Surgery, Eastern Virginia Medical School, Norfolk, Virginia, USA
| | - Raiza Amiling
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Vidisha Singh
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Elizabeth R Unger
- Division of High-Consequence Pathogens and Pathology, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Craig S Derkay
- Department of Otolaryngology-Head and Neck Surgery, Eastern Virginia Medical School, Norfolk, Virginia, USA
- Pediatric Otolaryngology, Children's Hospital of the King's Daughters, Norfolk, Virginia, USA
| | - Lauri E Markowitz
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
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In RRP, serologic response to HPV is frequently absent and slow to develop. PLoS One 2020; 15:e0230106. [PMID: 32160246 PMCID: PMC7065799 DOI: 10.1371/journal.pone.0230106] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 02/23/2020] [Indexed: 01/08/2023] Open
Abstract
Background Recurrent respiratory papillomatosis (RRP) is characterized by repeated formation of papillomas in the respiratory tract and is caused by human papillomavirus (HPV) types 6 and 11. Women with genital HPV infection are slow to develop weak humoral immunity, but respond robustly to the HPV vaccine. We wondered if people with RRP had a similar immune response. Methods A convenience cross-sectional sample of patients with RRP were recruited into one of four groups: 1) adults and adolescents with active RRP, 2) children with active RRP, 3) RRP patients who had undergone HPV vaccination prior to enrollment and, 4) people with RRP who were in remission. Anti-HPV6 and HPV11 serology was determined by cLIA on a single blood draw. Results Of the 70 subjects enrolled, 36, 16, 8, and 10, were in groups 1, 2, 3, and 4, respectively. 47% of participants aged >11 years and 81% aged ≤11 years possessed no antibodies against HPV6 or HPV11 (ie. double seronegative). 61% of patients in remission were double seronegative. All participants who had received HPV vaccine previously were seropositive to at least one of these low risk HPV types (ie none of them were double seronegative). Among patients who had active RRP and never had HPV vaccination (n = 52) there was an association between duration of symptoms and seropositivity. Of those who were seropositive, the geometric mean duration of symptoms was 11 years compared to 4.7 years for those who were seronegative (p = 0.001). Conclusion People with RRP are capable of developing a humoral response to HPV6 and HPV11. That response appears to be robust when initiated by the HPV vaccine, but either nonexistent or slow to develop in response to infection. Most in remission do not have demonstrable antibody levels against HPV6 or HPV11.
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Homozygous NLRP1 gain-of-function mutation in siblings with a syndromic form of recurrent respiratory papillomatosis. Proc Natl Acad Sci U S A 2019; 116:19055-19063. [PMID: 31484767 DOI: 10.1073/pnas.1906184116] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Juvenile-onset recurrent respiratory papillomatosis (JRRP) is a rare and debilitating childhood disease that presents with recurrent growth of papillomas in the upper airway. Two common human papillomaviruses (HPVs), HPV-6 and -11, are implicated in most cases, but it is still not understood why only a small proportion of children develop JRRP following exposure to these common viruses. We report 2 siblings with a syndromic form of JRRP associated with mild dermatologic abnormalities. Whole-exome sequencing of the patients revealed a private homozygous mutation in NLRP1, encoding Nucleotide-Binding Domain Leucine-Rich Repeat Family Pyrin Domain-Containing 1. We find the NLRP1 mutant allele to be gain of function (GOF) for inflammasome activation, as demonstrated by the induction of inflammasome complex oligomerization and IL-1β secretion in an overexpression system. Moreover, patient-derived keratinocytes secrete elevated levels of IL-1β at baseline. Finally, both patients displayed elevated levels of inflammasome-induced cytokines in the serum. Six NLRP1 GOF mutations have previously been described to underlie 3 allelic Mendelian diseases with differing phenotypes and modes of inheritance. Our results demonstrate that an autosomal recessive, syndromic form of JRRP can be associated with an NLRP1 GOF mutation.
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Acoustical and Perceptual Voice Profiling of Children With Recurrent Respiratory Papillomatosis. J Voice 2016; 30:600-5. [DOI: 10.1016/j.jvoice.2015.06.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 06/15/2015] [Indexed: 11/19/2022]
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Estimating the incidence and prevalence of juvenile-onset recurrent respiratory papillomatosis in publicly and privately insured claims databases in the United States. Sex Transm Dis 2014; 41:300-5. [PMID: 24722383 DOI: 10.1097/olq.0000000000000115] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Juvenile-onset recurrent respiratory papillomatosis (JORRP) is a chronic disease caused by human papillomavirus types 6 and 11. It is associated with significant morbidity that places intense physical, psychological, and financial strain on patients and their families. Few studies have assessed the incidence and prevalence of JORRP in the United States. METHODS This retrospective, longitudinal cohort study was performed using data from a pair of large insurance claims databases in the United States. The Optum Clinformatics and Truven MarketScan Medicaid databases represent a sample of privately and publicly insured children, respectively. Cohorts of children aged 0 to 17 years were created within each database to estimate the incidence and prevalence of JORRP in 2006. Claims-based algorithms were designed to capture as many potential cases as possible. To improve the accuracy of the incidence and prevalence estimates, chart validation was performed to estimate the positive predictive value (PPV) of the claims-based algorithms. RESULTS The overall PPV-adjusted incidence of JORRP in 2006 was 0.51 per 100,000 in Optum and 1.03 per 100,000 in the MarketScan Medicaid population. Peak incidence was observed among 0- to 4-year-olds in both databases. The PPV-adjusted prevalence of JORRP in 2006 was 1.45 and 2.93 per 100,000 in the Optum and MarketScan Medicaid cohorts, respectively. CONCLUSIONS Although relatively uncommon, JORRP represents a disease with significant morbidity. The incidence and prevalence of JORRP in publicly insured children were consistently higher than those covered by private insurance plans, suggesting an increased burden of illness among those with lower socioeconomic status.
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Intralesional cidofovir as adjuvant for the successful management of aggressive respiratory papillomatosis in an infant. Int J Pediatr Otorhinolaryngol 2013; 77:1912-5. [PMID: 24063771 DOI: 10.1016/j.ijporl.2013.08.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 08/26/2013] [Accepted: 08/29/2013] [Indexed: 11/23/2022]
Abstract
Recurrent respiratory papillomatosis (RRP) in young children is frequently characterized by a recalcitrant course and need for multiple surgeries. Periodic surgical debulking and ablation is the mainstay of therapy as a cure for RRP rarely occurs. Benefits of adjuvant treatment with local injection of cidofovir in aggressive cases of RRP have been reported in both children and adults. However, a consensus on initiation, dosage, or scheduling of this drug has not been established in the very young patient. Literature on successful remission in children less than 1 year of age is not available. One such case of an infant with aggressive RRP treated with local adjuvant cidofovir is described herein.
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Sato Hermann J, Pontes P, Maurice Weckx LL, Fujita R, Avelino M, Nagata Pignatari SS. Laryngeal sequelae of recurrent respiratory papillomatosis surgery in children. Rev Assoc Med Bras (1992) 2012. [DOI: 10.1590/s0104-42302012000200016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Hermann JS, Pontes P, Maurice Weckx LL, Fujita R, Avelino M, Nagata Pignatari SS. Laryngeal sequelae of recurrent respiratory papillomatosis surgery in children. Rev Assoc Med Bras (1992) 2012. [DOI: 10.1016/s0104-4230(12)70181-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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The epidemiology of juvenile onset recurrent respiratory papillomatosis derived from a population level national database. Laryngoscope 2010; 120:1233-45. [DOI: 10.1002/lary.20901] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Affiliation(s)
- Iain A Bruce
- Department of Paediatric ENT, Royal Manchester Children's Hospital, Manchester, UK.
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Abstract
Recurrent respiratory papillomatosis (RRP), which is caused by human papillomavirus types 6 and 11, is the most common benign neoplasm of the larynx among children and the second most frequent cause of childhood hoarseness. After changes in voice, stridor is the second most common symptom, first inspiratory and then biphasic. Less common presenting symptoms include chronic cough, recurrent pneumonia, failure to thrive, dyspnea, dysphagia, or acute respiratory distress, especially in infants with an upper respiratory tract infection. Differential diagnoses include asthma, croup, allergies, vocal nodules, or bronchitis. Reports estimate the incidence of RRP in the United States at 4.3 per 100,000 children and 1.8 per 100,000 adults. Infection in children has been associated with vertical transmission during vaginal delivery from an infected mother. Younger age at diagnosis is associated with more aggressive disease and the need for more frequent surgical procedures to decrease the airway burden. When surgical therapy is needed more frequently than four times in 12 months or there is evidence of RRP outside the larynx, adjuvant medical therapy should be considered. Adjuvant therapies that have been investigated include dietary supplements, control of extra-esophageal reflux disease, potent antiviral and chemotherapeutic agents, and photodynamic therapies; although several have shown promise, none to date has "cured" RRP, and some may have serious side effects. Because RRP, although histologically benign, is so difficult to control and can cause severe morbidity and death, better therapies are needed. The potential for a quadrivalent human papilloma vaccine is being explored to reduce the incidence of this disease.
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Chung BJ, Akst LM, Koltai PJ. 3.5-Year follow-up of intralesional cidofovir protocol for pediatric recurrent respiratory papillomatosis. Int J Pediatr Otorhinolaryngol 2006; 70:1911-7. [PMID: 16919339 DOI: 10.1016/j.ijporl.2006.06.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2006] [Revised: 06/19/2006] [Accepted: 06/27/2006] [Indexed: 11/23/2022]
Abstract
OBJECTIVES Intralesional injection of cidofovir has been described as an adjunctive treatment for pediatric recurrent respiratory papillomatosis (RRP). However, questions remain regarding the optimal dosing schedule and side-effect profile. The objective of this study was to describe patient outcomes following a standardized cidofovir protocol. METHODS Eleven pediatric patients originally treated with a standardized stepped-dose protocol of intralesional cidofovir for RRP were followed for an extended observational period. Additional interventions, disease severity, and adverse outcomes were recorded. RESULTS Five of 11 patients have required no further treatments following the original cidofovir protocol. Two patients initially achieved remission but have subsequently required additional treatment for recurrent disease. Four patients never achieved remission and have undergone multiple additional interventions. Mean follow-up time for all patients from the conclusion of the original study was 30.2 months (10-45). No adverse outcomes were noted. CONCLUSIONS Intralesional injection of cidofovir may have some potential as an adjunct in the treatment of RRP. Response to cidofovir is unpredictable. Further study of cidofovir is necessary to more clearly define whether the favorable responses observed represent a true treatment effect or simply reflect the natural history of the disease. Perhaps as important is to refine treatment protocols and informed consents that reflect the concern about the carcinogenic potential of cidofovir and to better characterize the drug's side-effect profile.
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Affiliation(s)
- Brian J Chung
- Head & Neck Institute, Cleveland Clinic Foundation, Desk A71, 9500 Euclid Avenue, Cleveland, OH 44195, United States.
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Freed GL, Derkay CS. Prevention of recurrent respiratory papillomatosis: role of HPV vaccination. Int J Pediatr Otorhinolaryngol 2006; 70:1799-803. [PMID: 16884786 DOI: 10.1016/j.ijporl.2006.06.006] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2006] [Revised: 06/06/2006] [Accepted: 06/07/2006] [Indexed: 10/24/2022]
Abstract
Recurrent respiratory papillomatosis is a rare, but devastating, cause of airway lesions in children and adults. This disease is caused by human papilloma virus subtypes 6 and 11. At this time there are two vaccines in late stages of development seeking Food and Drug Administration (FDA) approval to prevent cervical cancer, which is also caused by human papilloma virus. One of these vaccines has been developed to stimulate immunity to the most common subtypes that cause cervical cancer but also includes those responsible for recurrent respiratory papillomatosis. With the possibility this could drastically reduce the incidence of RRP, the otolaryngology community should advocate for implementation of a vaccine program that provides effective prevention of HPV infection with subtypes 6 and 11.
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Affiliation(s)
- Gary L Freed
- Department of Otolaryngology, Eastern Virginia Medical School, 825 Fairfax Avenue, Suite 510, Norfolk, VA 23507, United States
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Abstract
Recurrent respiratory papillomatosis is a frustrating and challenging disease for surgeons, patients, and patients' families. Although the voice and airway manifestations are managed surgically, a "cure" for this disease remains elusive. In this edition of the "Seminar Series," we endeavor to review the current literature regarding the epidemiology, etiology, clinical manifestations, and surgical and medical treatments of this disorder. The key to future management of recurrent respiratory papillomatosis may lie in its prevention, if current efforts to develop an effective vaccine come to fruition.
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Affiliation(s)
- Craig S Derkay
- Department of Otolaryngology, Eastern Virginia Medical School, 825 Fairfax Ave, Suite 510, Norfolk, VA 23507, USA
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Andrus JG, Shapshay SM. Contemporary Management of Laryngeal Papilloma in Adults and Children. Otolaryngol Clin North Am 2006; 39:135-58. [PMID: 16469660 DOI: 10.1016/j.otc.2005.10.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Jennifer G Andrus
- Department of Otolaryngology - Head & Neck Surgery, Boston Medical Center, 88 East Newton Street, Suite D-610, Boston, MA 02118, USA.
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Derkay CS, Smith RJH, McClay J, van Burik JAH, Wiatrak BJ, Arnold J, Berger B, Neefe JR. HspE7 treatment of pediatric recurrent respiratory papillomatosis: final results of an open-label trial. Ann Otol Rhinol Laryngol 2005; 114:730-7. [PMID: 16240938 DOI: 10.1177/000348940511400913] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES We sought to evaluate the effectiveness of HspE7, a recombinant fusion protein of Hsp65 from Mycobacterium bovis BCG and E7 protein from human papillomavirus 16, to improve the clinical course of pediatric patients with recurrent respiratory papillomatosis. METHODS An open-label, single-arm intervention study was conducted in 8 university-affiliated medical centers. Twenty-seven male and female patients with recurrent respiratory papillomatosis, ages 2 to 18 years, were enrolled and followed up to 60 weeks. Before enrollment, these patients required surgery on average every 55 days. After a baseline debulking surgery, the patients received HspE7 500 microg subcutaneously monthly, for 3 doses over 60 days. The primary end point was the length of the interval from the last surgery during the treatment period until the first debulking surgery in the posttreatment period, compared with the median intersurgical interval (ISI) of the 4 surgeries before the treatment. RESULTS The mean of the first posttreatment ISI increased 93% (from 55 days to 106 days; p < .02). The median ISI for all surgeries after treatment was similarly prolonged (mean, 107 days; p < .02), indicating a sustained treatment effect, and was associated with a significant decrease in the number of required surgeries (p < .003). Unexpectedly, the treatment effect was most striking in the 13 female patients, who had statistically significant increases in both the first posttreatment ISI (142%; p < .03) and the median ISI (147%; p < .03). The most common adverse events were mild-to-moderate injection site reactions. CONCLUSIONS Treatment with HspE7 appears to significantly improve the clinical course in pediatric patients with RRP insofar as it reduces the frequency of required surgeries. These results warrant a confirmatory phase III trial.
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Affiliation(s)
- Craig S Derkay
- Department of Otolaryngology-Head and Neck Surgery, Eastern Virginia Medical School, Norfolk, Virginia, USA
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Silverman DA, Pitman MJ. Current diagnostic and management trends for recurrent respiratory papillomatosis. Curr Opin Otolaryngol Head Neck Surg 2004; 12:532-7. [PMID: 15548913 DOI: 10.1097/01.moo.0000144392.33250.15] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW The purpose of this review is to discuss recent literature regarding diagnostic and management trends for recurrent respiratory papillomatosis (RRP) published within the past year. This includes a discussion of new information regarding the epidemiology and pathogenesis of RRP and an update on adjuvant therapy and new surgical techniques. RECENT FINDINGS Epidemiological studies have confirmed that juvenile-onset RRP is the most common and most aggressive form of the disease. Age at diagnosis is the most important determinant of disease severity, with younger patients requiring significantly more annual surgeries and more likely to have multicentric disease. Distal tracheal or pulmonary RRP is rare, but carries a significant increase in morbidity and mortality. Research into the pathogenesis of RRP has focused on the genetics of HPV infection and host-virus interactions, suggesting a genetic basis for host susceptibility to RRP. At the present time, surgery remains the mainstay of treatment for RRP. However, recurrence after surgery is common and the search for effective adjuvant therapies is ongoing. The antiviral drug cidofovir has demonstrated efficacy against RRP and is considered a promising new adjuvant treatment of this disease. In an attempt to minimize the untoward effects of surgery, the pulsed-dye laser (PDL) has emerged as a safe and efficacious treatment for select patients with RRP. SUMMARY While a cure for RRP remains elusive, there has been substantial progress in the diagnosis and management of this disease. Significant advances in clinical and basic science research have dramatically improved our understanding of the epidemiology and pathogenesis of the disease and led to the development of promising new adjuvant therapies and surgical techniques. This has translated to an improved quality of life for many patients with RRP.
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Affiliation(s)
- Damon A Silverman
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of Vermont College of Medicine, Burlington, Vermont, USA.
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