Prevalence of Human Papillomavirus (HPV) Types in Preinvasive and Invasive Cervical Lesions

Öz

Although its incidence is progressively decreasing, cervical cancer is an important cause of mortality caused by gynecological cancers. With wide utilization of cytologic screening,programs especially in developed countries, its incidence has  decreased; however, it is still a major health problem for the developing countries. Due to the easy intervention to the cervix with early diagnosis and treatment onset chance with cervicovaginal smear examination, prognosis of this disease has been significantly improved. Long pre-invasive period of the cervical cancers highlights the importance of the screening programs. Previous epidemyological studies showed that the human papilloma virus (HPV) is the major risk factor for cervical cancer. In this study, we aimed to determine the prevalence of the HPV types in patients who were diagnosed with suspicious pre-invasive or invasive cervical lesions by the conventional smear examination. 61 patients with suspicious pre-invasive or invasive cervical lesion were enrolled in this study. HPV samples were obtained from patients before colposcopy and then evaluated with polymerase chain reaction (PCR) and DNA-typing, after these, low or high-risk HPV types were compared with results of the colposcopic biopsy. Among the HPV types obtained from patients, most common subtype was HPV 16. Further studies with larger populations are required.

Anahtar Kelimeler

• Smear,HPV,Colposcopy

PREİNVAZİV VE İNVAZİV SERVİKAL LEZYONLARDA HUMAN PAPILLOMA VIRUS (HPV) TİPLERİNİN PREVALANSININ SAPTANMASI

Öz

Serviks kanseri insidansı giderek azalmakla beraber hala jinekolojik kanserlerden ölümlerin önemli bir sebebidir. Sitolojik tarama programlarının yaygın olarak kullanılmasıyla özellikle gelişmiş ülkelerde insidans azalmıştır, ancak gelişmekte olan ülkelerde hala önemli bir sağlık sorunu olmaya devam etmektedir. Serviksin kolay ulaşılabilir bir organ olması, servikovajinal smear ile erken tanı ve tedavinin planlanmasıyla prognoz anlamlı ölçüde iyileşmektedir. Serviks kanserinde uzun bir preinvaziv sürecin varlığı, tarama programlarının önemini göstermektedir. Yapılan epidemiyolojik çalışmalar, serviks kanseri için major risk faktörünün human papilloma virus (HPV) olduğunu göstermiştir. Bu çalışmada; konvansiyonel smear sonucu preinvaziv veya invaziv servikal lezyon şüphesi olan hastalarda HPV tiplerinin prevalansının saptanması amaçlanmıştır. Çalışmaya preinvaziv veya invaziv servikal lezyon şüphesi olan 61 hasta dahil edilmiştir. Hastalardan kolposkopi öncesi alınan HPV numuneleri polimeraz zincir reaksiyonu (PCR) ile değerlendirilmiş, DNA tiplemesiyapılmış, düşük veya yüksek riskli HPV tipleri ile kolposkopik biyopsi sonuçları kıyaslanmıştır. Hastalarda HPV tiplerinden en sık HPV 16 saptanmıştır. Bu konuda daha geniş popülasyonlara ulaşılan çalışmalara ihtiyaç duyulmaktadır.

Anahtar Kelimeler

• smear,HPV,kolposkopi

Kaynakça

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