2013-12-062013-12-062013-07-09FONSECA, Aluizio Gonçalves da. Papilloma vírus humano: prevalência, distribuição e importância como fator preditivo para metástases linfonodais em carcinoma do pênis. 2013. 59 f. Tese (Doutorado) - Universidade Federal do Pará, Instituto de Ciências Biológicas, Belém, 2013. Programa de Pós-Graduação em Neurociências e Biologia Celular.https://repositorio.ufpa.br/handle/2011/4510The etiology of squamous cell carcinoma of the penis (CEP) is related to multiple risk factors such as the presence of foreskin, poor hygiene, chronic dermatitis and smoking. However, the risk factor most extensively studied, is infection by human papilloma virus (HPV). It is well established that this plays an important etiologic role in cancers of the uterine cervix, however, its association with CEP has been the focus of debate, demonstrating viral presence ranging from 15% to 80% of cases, suggesting that only a subset of these tumors is caused by HPV. The prognosis is negatively influenced mainly by the presence of metastases in inguinal lymph nodes. Thus, the surgical aproach of them, is of vital importance in curing the disease. On the other hand, the available methods for staging these nodes are imprecise and lymphadenectomy are accompanied by significant morbidity. A description of other histological markers is scarce because of the rarity of these tumors. The objective of this study is to evaluate the prevalence, distribution and association between HPV and histological parameters of poor prognosis, in order to determine their possible predictive value for inguinal metastases, as well as prognostic factors already described. Paraffin tumor specimens from 82 patients with squamous cell carcinoma of the penis were tested for prevalence and genotype distribution of HPV by PCR. The HPV status was correlated with histopathological factors and metastatic inguinal. It was also evaluated the influence of various histological tumor factors, in lymphonodal disease free survival at 5 years. Follow-up ranged from 1 to 71 months (mean 20 months). HPV DNA was detected in 60.9% of the sample having the most prevalent viral type 11 and 6 (64% and 32%, respectively). There was no significant correlation independent of the histological variables of poor prognosis with HPV status. The probability of lymphonodal disease free survival at 5 years, was not affected by HPV (log rank test = 0.45). The only independent factors for pathological inguinal metastases were T stage ≥ T1b-T4 (p = 0.02), lymphovascular invasion (p = 0.04) and infiltrative invasive front (p=0, 03). The status and distribution of HPV showed no correlation with histological factors of poor prognosis, nor showed significance in predicting lymph node metastases in CEP.porAcesso AbertoNeoplasias penianasPapillomavírus humanoMetástases linfáticasMarcadores biológicosPrevalênciaTeseCNPQ::CIENCIAS BIOLOGICAS::MICROBIOLOGIA