Diagnostic screening of HPV genotypes in 555 Ecuadorian mestizo women of seven provinces, and comparison with other Latino American populations / Tamizaje diagnóstico de genotipos de VPH en 555 mujeres mestizas ecuatorianas, de siete provincias, y comparación con otras poblaciones latinoamericanas

Objective: this paper aims to perform diagnostic screening of HPV in healthy Ecuadorian mestizo women, from seven provinces, and compare the findings with other Latin American populations. Material and methods: genotyping was done with two different oligonucleotides MY09 and MY11; a fragment of 450 base pairs was amplified,L1 region of the viral genome. Results: it analyzed 555 women, 35 were positive for HPV (6.3%). Genotypes found in relation to oncogenic risk, were 6, 11, 16, 18, 31, 33, 35, 42, 45, 51, 52, 53, 58, 59, 61, 81. 12/35 women (34.3%) presented high-risk genotypes. Four positive cases were also observed in women older than 55 years (0.36%). The 14 published studies of Ecuadorian women showed that the most prevalent genotypes are 16, 18, 31, 52, 53, 56 and 58; while in the eight Latin American Studies the most prevalent are 16, 18, 31, 45, 52 and 58. Conclusion: although there are several studies on HPV genotyping on Latin American populations, there is an important gap related to ethnicity and the prevalence of the virus. In addition, most of them have not compared similar and common subtypes in the population. The general prevalence of HPV in the studied population was 6.3%. It found that genotypes 16, 18, 31, 52, 53, 56 and 58 are the most prevalent in Ecuadorian normal mestizo women. Genotypes 53 and 56 are common in Latino populations. Larger studies, in different ethnic groups are needed to identify other prevalent genotypes in certain geographical areas..(AU)

Objetivo: realizar tamizaje diagnóstico de VPH en mujeres mestizas ecuatorianas sanas, de siete provincias, y comparar los hallazgos con otras poblaciones latinoamericanas. Material y métodos: el genotipado se realizó con dos oligonucleótidos diferentes MY09 y MY11; se amplificó un fragmento de 450 pares de bases, correspondiente a la región L1 del genoma viral. Resultados: se analizó 555 mujeres, 35 fueron positivas para VPH (6,3%). Los genotipos encontrados en relación con el riesgo oncogénico fueron 6, 11, 16, 18, 31, 33, 35, 42, 45, 51, 52, 53, 58, 59, 61, 81. 12/35 mujeres (34,3%) presentaron genotipos de alto riesgo. También se observaron cuatro casos positivos en mujeres mayores de 55 años (0,36%). Los 14 estudios publicados de mujeres ecuatorianas mostraron que los genotipos más prevalentes son 16, 18, 31, 52, 53, 56 y 58; mientras que en los ocho estudios latinoamericanos los más prevalentes son 16, 18, 31, 45, 52 y 58. Conclusión: aunque existen estudios sobre la prevalencia de VPH, aún existe una brecha sobre la relación entre la etnicidad y la prevalencia del virus. Además, los estudios en América Latina no han comparado subtipos similares y comunes en la población. La prevalencia general del VPH en la población estudiada fue del 6,3%. Este estudio encontró que los genotipos 16, 18, 31, 52, 53, 56 y 58 son los más prevalentes en las mujeres mestizas ecuatorianas sanas. Los genotipos 53 y 56 son los más comunes en las poblaciones latinas. Se necesitan estudios más grandes, en diferentes grupos étnicos para identificar otros genotipos prevalentes en ciertas áreas geográficas..(AU)

Oral squamous papilloma: a view under clinical, fluorescence and histopathological aspects / Papiloma escamoso oral: uma visão sob aspectos clínicos, de fluorescência e histopatológicos

ABSTRACT Oral squamous papilloma is a benign tumor whose pathogenesis has been associated with human papillomavirus infection. Thus, it is noteworthy that human papillomavirus infection is one of the risk factors associated with the development of cervical, anogenital, pharynx, larynx and oral cavity carcinomas. Oral squamous papilloma can affect any region of the oral cavity, and transmission of human papillomavirus can occur by direct contact, sexual intercourse or from mother to child during delivery. The diagnosis is clinical and histopathological, with surgical removal representing the treatment of choice. Recently, widefield optical fluorescence has been used as a complementary examination to the conventional clinical examination in the screening of oral pathological lesions and for the delimitation of surgical margins. We report a case of oral squamous papilloma with its clinical, histopathological features and, in addition, from the perspective of wide field optical fluorescence.

RESUMO O papiloma escamoso oral é um tumor benigno, cuja patogênese tem sido associada à infecção pelo papilomavírus humano. A infecção pelo papilomavírus humano é um dos fatores de risco associado ao desenvolvimento dos carcinomas cervicais, anogenitais, faríngeos, laríngeos e da cavidade oral. O papiloma escamoso oral pode acometer qualquer região da cavidade oral, e a transmissão do papilomavírus humano ocorre por contato direto, relação sexual ou de mãe para filho durante o parto. O diagnóstico é clínico e histopatológico, e a remoção cirúrgica representa o tratamento de escolha. Recentemente, a fluorescência óptica de campo amplo tem sido empregada como exame complementar ao exame clínico convencional, no rastreio de lesões patológicas orais e para delimitação de margens cirúrgicas. Relatamos um caso de papiloma escamoso oral com suas características clínicas e histopatológicas, sob a perspectiva da fluorescência óptica de campo amplo.