NO ASSOCIATION OF RECURRENT RESPIRATORY PAPILLOMATOSIS AGGRESSIVENESS AND HUMAN PAPILLOMAVIRUS TYPE 6 AND 11

Recurrent Respiratory Papillomatosis (RRP) is the most common benign neoplasm of the larynx among children as a result of HPV infection mainly type 6 and 11. RRP is still considered as serious problem since papilloma in the airway can cause hoarseness and obstruction which later described as aggressive and non aggressive types. Patients underwent multiple surgeries to keep airway patency and in order to communicate vocally. Previous studies reported that HPV-11 was associated with a more aggressive disease course. This study aim is to determine the association of RRP aggressiveness with HPV-6 and 11. Papilloma specimens were taken from patients who underwent surgical treatment of RRP patients and subjected HPV typing. All 17 patients with completed data and epidemiologic questionaires were defined for their staging to disease severity. Informations in the database were analyzed to identity statistically significant relationship with HPV type and knowing the HPV type is to predict the disease course. 17 patients RRP (12 males and 5 females) with age at onset 3,15 + 2,28 years and age at diagnosis 3,81 + 2,51 years. Surgery was performed 2,71 ± 1,16 times per year and 9 patients treated more than 3 surgeries per year. 10 patients had distal papilloma and 11 patients had tracheotomy. Agrressive disease was show found in 14 patients among 17 patients. HPV-11 was detected in 10 patients, HPV-6 was detected in 7 patients. According to the statisitcal analysis (Chi square test), there is no relationship between HPV type and disease aggressiveness. HPV-6 and 11 are not the only cause that affect the aggressiveness of Recurrent Respiratory Papillomatosis