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.
Abstract

Related Concept Videos

Tonsillitis I: Introduction01:30

Tonsillitis I: Introduction

Tonsillitis is inflammation of the tonsils, which are two lymphoid tissue masses at the back of the throat. This condition can cause discomfort and irritation in the throat.
Etiology
Three primary contributing factors have been identified.
Chronic Pharyngitis01:23

Chronic Pharyngitis

Chronic pharyngitis refers to persistent inflammation of the pharyngial mucosa.
Etiology
It often arises from persistent viral or bacterial infections affecting sinuses and tonsils.
Additional contributing factors include inadequate dental hygiene, mouth breathing, recurring tonsillitis, allergic rhinitis, laryngopharyngeal reflux, and exposure to smoke, chemicals, and other environmental pollutants. Allergic reactions to pollen, mold, and pet dander, chronic cough, excessive voice usage,...
Poliomyelitis01:17

Poliomyelitis

Poliomyelitis is caused by poliovirus, a small, non-enveloped, positive-sense RNA virus of the Picornaviridae family and Enterovirus genus. Transmission occurs primarily via the fecal-oral route, often through ingestion of contaminated water or food. The virus initially replicates in the oropharynx and intestinal mucosa, particularly in lymphoid tissues such as the tonsils, Peyer’s patches, and regional lymph nodes. Primary viremia follows, allowing dissemination throughout the body.In most...
Acute Pharyngitis01:30

Acute Pharyngitis

Introduction
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:
Cellular Adaptation III: Hyperplasia01:26

Cellular Adaptation III: Hyperplasia

Hyperplasia is an increase in the number of cells in a tissue or organ due to enhanced cell division. It is an adaptive, controlled response to stimuli such as injury, hormones, or stress, involving mitosis to produce genetically identical cells and support tissue repair and regeneration.Tissue CapacityCertain tissues, including the epidermis, intestinal epithelium, bone marrow, and fibroblasts, have a high potential for hyperplasia. Others, such as bone, cartilage, and smooth muscle, show...
Cellular Adaptation IV: Dysplasia and Metaplasia01:24

Cellular Adaptation IV: Dysplasia and Metaplasia

DysplasiaDysplasia refers to abnormal changes in the size, shape, and organization of mature cells, characterized by pleomorphism, nuclear abnormalities, and increased mitotic activity. It commonly affects epithelial tissues, including the cervix, gastrointestinal tract, respiratory mucosa, and endometrium. Although it may occur alongside hyperplasia, dysplasia is not a true adaptive response but a preneoplastic change with potential to progress to cancer.When confined above the basement...