Human papillomavirus (HPV) detection in lip squamous cell carcinoma: correlation with clinical aspects and risk factors / Detecção do papilomavírus humano (HPV) em carcinoma espinocelular de lábio: correlação com aspectos clínicos e fatores de risco

O papilomavírus humano (HPV) está associado a um largo espectro de lesões em humanos e tem sido ligado à carcinogênese oral. O objetivo deste estudo foi investigar a presença do DNA do HPV em pacientes com carcinoma espinocelular de lábio e correlacioná-la com aspectos clínicos e fatores de risco. Foram estudados 33 pacientes com carcinoma espinocelular de lábio. Destes, 30 pacientes foram positivos para o gene da beta-globina humana e então foram testados para o DNA do HPV com uso da reação em cadeia de polimerase em duas etapas (PCR e nPCR) com os oligonucleotídeos iniciadores MY11/MY09 e GP5+/ GP6+. O DNA do HPV foi detectado em 43,33 por cento dos 30 pacientes analisados. Não houve associação com os fatores de risco analisados.

Human papillomavirus (HPV) is associated with a wide spectrum of lesions in humans, and it has been linked to oral carcinogenesis. The aim of this study was to investigate the presence of HPV DNA in patients with lip squamous cell carcinoma and to correlate it with clinical characteristics and risk factors. We studied 33 patients with lip squamous cell carcinomas. Of these, 30 were positive for human beta globin gene and tested for HPV DNA, using polymerase chain reaction in two steps (PCR and nPCR) with MY11/MY09 and GP5+/GP6+ primers. HPV DNA was detected in 43.33% of patients analyzed. There was no association with the risk factors analyzed.

Actinic lesions in fishermen's lower lip: clinical, cytopathological and histopathologic analysis

INTRODUCTION: Actinic cheilitis (AC) is considered to be a pre-malignant lesion or an incipient and superficial form of lip squamous cell carcinoma. It is commonly found in individuals whose occupational activities are related to chronic sun exposure and the definitive diagnosis is performed with biopsy. Althoug Exfoliative cytology has been used as a screening procedure to evaluate cancer of the oral cavity no studies have proposed the use of exfoliative cytologic analysis to evaluate and diagnose AC. OBJECTIVE: The purpose of this study was to evaluate lower lip lesions on fishermen related to chronic solar exposure using clinical, cytologic and histopathologic analyses. PATIENTS AND METHODS: Smears taken from the vermilion of the lower lips of 125 fishermen and 30 control individuals were subjected to cytologic analysis. RESULTS: The harvested cells were sufficient for cytologic analysis in 83.2 percent of the samples. Sixteen fishermen exhibited prominent lower lip lesions that justified biopsy and histological studies. In total, 4 specimens were malignant (3.2 percent), and 12 displayed epithelial dysplasia, demonstrating that the prevalence of epithelial dysplasia and malignant lesions was high among the fishermen population. These conditions were strongly associated with infiltration and blurring of the vermilion margin of the lower lip. CONCLUSION: The cytologic analysis was not useful for detecting epithelial dysplasia or malignant alterations.

Squamous cell carcinoma of the lip after allogeneic hemopoietic stem cell transplantation

Allogeneic hemopoietic stem cell transplantation [HSCT] has been considered a curative treatment option for many hematological and non-hematological disorders. Despite the use of advanced methods of tissue typing and new therapies, graft versus host disease [GVHD] remains a major obstacle. Secondary malignancies are also among the most serious long-term complications after HSCT including leukemia, lymphomas, and to a lesser extent, solid tumors. The most commonly observed solid tumor is squamous cell carcinoma [SCC]. We report two cases of SCC of the lower lip diagnosed several years after HSCT. Both cases were complicated with GVHD prior to the development of SCC and had a successful outcome with minimal surgical intervention

Edema crónico centrofacial con consumo del componente C1q del complemento / Centrofacial chronic edema with consumption of the component C1q of the complement

Se estudia un paciente de sexo masculino de 29 años, que padecía en el momento de la consulta edema de labios y párpados de un año y medio de evolución. Al confeccionar la historia clínica se determinó que los edemas se presentaban con reagudización, acompañados con úlceras de la mucosa yugal y fiebre de 40§C coincidente con las crisis. El edema de los párpados remitía casi en su totalidad con cada tratamiento esteroide, aunque no así el de labios. Los estudios de laboratorio mostraron anormalidades en la fracción C1q del complemento (0.3 mg ciento por ciento). El estudio histopatológico de un corte de labio halló infiltración mononuclear en el estroma, con disposición angiocéntrica. El infiltrado tenía células linfoides atípicas, que fueron positivas a la inmunomarcación con el anticuerpo monoclonal UCHL-1. Se diagnosticó linfoma T de presentación cutánea centrofacial. El caso se presenta por la interesante coexistencia en un individuo de un desorden linfoproliferativo con edema de labios inflamatorio crónico y edema de párpado recurrente por deficiencia adquirida del C1INH

Câncer do lábio inferior / Lower lip cancer

Os autores apresentam a análise de 190 casos selecionados de câncer do lábio inferior tratados no Instituto nacionalde Câncer - RJ, no período de 1970 a 1978. Dados estatísticos revelam ser este tumor mais freqüente em pacientes do sexo masculino, de raça branca e com idade superior a 50 anos. Aspectos etiológicos e de histopatologia säo também discutidos. A importância do diagnóstico precoce é enfatizada, e quanto ao tratamento houve semelhança nos resultados obtidos com cirurgia ou radioterapia nas lesöes iniciais e superioridade evidente da cirurgia nas lesöes avançadas