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Korean Journal of Obstetrics & Gynecology 2002;45(5):753-758.
Published online May 1, 2002.
The Comparison of Conventional Pap Smear with ThinPrep Pap Smear in detecting HSIL and Cervix cancer.
Kyung Chul Lee, Ho Sun Choi, Hye Jung Kim, Yong Sik Kim, Kwang Pil Jeong, Hoon Park, So Yi Rim, Seok Mo Kim, Ji Soo Byun, Jong Hee Nam, Chang Soo Park
1Department of Obstetrics and Gynecology, Chonnam University Medical School, Gwangju, Korea.
2Department of Pathology, Chonnam University Medical School, Gwangju, Korea.
Abstract
OBJECTIVE
To compare the conventional Pap smear with the ThinPrep Pap smear in detecting HSIL and invasive cervical cancer and to determine the clinical value of ThinPrep Pap smear. METHODS : We evaluated the Pap smear results of 2933 patients. These subjects were selected from women having visited the early cancer clinic of the department of Obstetrics and Gynecology, Chonnam University Hospital, from Jan. 1998 to Dec. 2000. Of 2933 patients, conventional Pap smear and ThinPrep Pap smear were performed in 1594 and 1339 cases respectively. According to the results, sensitivity, specificity, positive predictability and negative predictability of both tests were compared and analyzed. RESULTS: In detecting HSIL and invasive cervical cancer, the conventional Pap smear examinations showed sensitivity 62.0%, specificity 96.5%, positive predictability 87.7%, and negative predictability 86.3%, while ThinPrep Pap smear did sensitivity 85.1%, specificity 98.3%, positive predictability 97.4% and negative predictability 89.7%. CONCLUSION: ThinPrep Pap smear makes it possible to obtain better specimen by reducing probable mistakes in sampling, and which can result in decreasing the rate of false negativity of Pap smear and increasing the accuracy of the Pap smear examination. Therefore, ThinPrep pap smear is a useful method in raising detection rate of HSIL and invasive cervical cancer.
Key Words: ThinPrep pap smear, Sensitivity, Cervix cancer


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