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Human papilloma virus in hyperplastic tonsillar and adenoid tissues in children
Ioannis N Mammas1, George Sourvinos, Catherine Michael
1Laboratory of Virology, School of Medicine, University of Crete, Heraklion, Greece.
Insights
Human papillomavirus (HPV) DNA was found in 8.5% of children with tonsillar and adenoid hyperplasia. The study highlights the need for cautious evaluation of high-risk HPV DNA detection in pediatric cases.
Area of Science:
- Pediatric Otolaryngology
- Viral Oncology
- Molecular Diagnostics
Background:
- Childhood human papillomavirus (HPV) infections cause various conditions, including skin/anogenital warts and recurrent respiratory papillomatosis.
- Limited data exists on HPV prevalence in pediatric tonsillar and adenoid hyperplasia.
Purpose of the Study:
- To determine the presence of HPV DNA in children diagnosed with benign tonsillar and/or adenoid hyperplasia.
Main Methods:
- Polymerase chain reaction (PCR) with general GP5+/GP6+ primers was used to test 106 tissue samples from 102 children (ages 2-14).
- Specific PCR primers were employed for HPV typing (HPV-16, -18, -33, -11).
Main Results:
- HPV DNA was detected in 9 (8.5%) of the specimens.
- HPV-16 was the most frequent type (66.7%), followed by HPV-11 (22.2%).
- HPV was found in both tonsillar (9.4%) and adenoid (7.1%) hyperplasia cases, with a lower mean age in HPV-positive children.
Conclusions:
- The clinical significance of HPV DNA in tonsillar and adenoid hyperplasia requires further investigation.
- Detection of high-risk HPV DNA in these pediatric conditions warrants careful consideration.
Background:
Human papillomavirus (HPV) in childhood causes skin and anogenital warts as well as the recurrent respiratory papillomatosis, a life-threatening cause of upper airway obstruction in children. To date, the information on HPV infection in tonsillar and adenoid hyperplasia in children is limited.
Purpose:
The purpose of this study was to investigate the presence of HPV DNA in children with benign tonsillar and/or adenoid hyperplasia.
Methods:
One hundred six samples of paraffin-embedded adenoid and/or tonsillar tissues from 102 children, 57 girls and 45 boys (age range, 2-14 years), were tested for the presence of HPV DNA using polymerase chain reaction (PCR) with general primers GP5+/GP6+. HPV typing was performed by PCR with specific primers for HPV-16, -18, -33 and -11.
Results:
HPV DNA was detected in 9 (8.5%) of the 106 collected specimens. The frequencies of HPV typing were 6 of 9 (66.7%) for HPV-16, 2 of 9 (22.2%) for HPV-11, zero of 9 (0%) for HPV-33 and HPV-18, whereas one HPV-positive sample remained untyped. No multiple HPV infection was detected. HPV was detected in 6 (9.4%) children with tonsillar hyperplasia and in 3 (7.1%) with adenoid hyperplasia. The mean age of children with HPV-positive specimens was lower than that of HPV-negative children (P = 0.006). No statistical correlation in the prevalence of HPV infection was observed according to children's sex, origin or residence (urban or rural).
Conclusion:
Although the significance of the presence of HPV DNA in tonsillar and adenoid hyperplasias remains obscure, the PCR detection of high-risk HPV DNA should be evaluated cautiously.
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