The accuracy of Kato's self smear Kit was studied in screening a relatively unselected population group for cervical cancer. Routine cervicovaginal smears taken periodically would be the ideal method but would be unrealistic in view of the physician's time involved when considered on a large population scale. Three hundred patients were randomly selected at the Out Patient Clinic of Yonsei Medical Center and 26 cases grossly of cervical cancer were included in this group. We have here summarized the results briefly as follows. 1. Among 300 women examined in our OPD, 256 (85.3%) were classified as Pap. Class I or II, 9(0.3%) as a 'Defferred' group (Class II, Repeat), 18(6%) as Class III and 17(5.7%) as Class IV or V. 2. Fifteen of the total cases had insufficient material for evaluation (poor quality) and the major causes of the poor smears were vaginal douche within 24 hours, technical problems and cell degeneration. 3. The rate of agreement between the Self Smear Kit and cervicovaginal smear was as follows: a. The rate of complete agreement was 93.2% (280/300) b. The rate of complete or partial agreement was 96.7% (290/300). 4. The diagnostic accuracy of the Self Smear Kit was as follows: a. If we assumed the 'Deferred' group to be detection failures for uterine cancer, the diagnostic accuracy would be 82.4%. b. If we assumed the 'Deferred' group to be detection successes, the diagnostic accuracy would be 94.1%. 5. The quality of self smears was superior when taken by an aid nurse rather than by the patient herself. 6. Optimal time for good preservation with the Self Smear Kit prior to pap. stain under the following temperatures was proven experimentally to be as follows; a. At 5 degrees C: 3 days after smear b. At 15 degrees C: 3 days after smear c. At 30 degrees C: 2 days after smear
Adult ; Cervix Neoplasms/prevention & control* ; Female ; Human ; Mass Screening/methods* ; Middle Age ; Vaginal Smears/instrumentation ; Vaginal Smears/methods*

Cytological Techniques ; methods ; Diagnosis, Computer-Assisted ; Female ; Humans ; Vaginal Smears ; methods

Cervical Intraepithelial Neoplasia ; diagnosis ; pathology ; virology ; China ; DNA Probes, HPV ; Female ; Humans ; Pregnancy ; Vaginal Smears ; methods

Female ; Greece ; History, 20th Century ; Humans ; Papanicolaou Test ; history ; Philately ; United States ; Uterine Cervical Neoplasms ; diagnosis ; Vaginal Smears ; methods

To compare the predictive values of 5% acetic acid stain and visual inspection, human papillomavirus (HPV) Self test, ThinPrep Pap and HPV direct test in screening for cervical cancer with biopsy as gold standard. Positive predictive values and negative predictive values were compared simultaneously by joint hypothesis tests and then either positive predictive values or negative predictive values of the any two screening tests were compared by marginal regression based on both GEE and weighted least square methods. Hochberg method was used for multiplicity adjustment. It was showed that HPV direct test had the highest negative predictive value and ThinPrep Pap the highest positive predictive value. 5% acetic acid stain and visual inspection had both the lowest positive predictive value and negative predictive value. Both HPV direct test and ThinPrep Pap were efficient, but the latter required compatible infrastructure and skilled caregivers to go with. Both 5% acetic acid stain and visual inspection were inexpensive, and their positive predictive value and negative predictive value were lower than HPV self-test. They also had similar positive predictive value with HPV direct test and similar negative predictive value with ThinPrep Pap. HPV self-test appeared to be efficient, suggesting that it had significant potential for screening program to be implemented in the rural areas of China since the test could be performed without speculum examination in low-resource regions.
Adult ; Female ; Humans ; Mass Screening ; methods ; Papillomaviridae ; isolation & purification ; Predictive Value of Tests ; Uterine Cervical Neoplasms ; diagnosis ; pathology ; prevention & control ; Vaginal Smears ; methods

OBJECTIVETo study the rate of concordance between positive cervical cytologic interpretation based on liquid-based preparations and subsequent histologic diagnosis.

METHODSLiquid-based cervical cytology (SurePath) was carried out in 15,393 patients. Cases with the cytologic diagnosis of epithelial cell abnormality were further investigated by human papillomavirus (HPV) DNA testing (Hybrid Capture II) for the high-risk HPV DNA, colposcopic examination and multiple cervical biopsies. The 2001 version of The Bethesda System for reporting gynecologic cytology was applied. Positive cytologic diagnosis included atypical squamous cells of undetermined significance (ASC-US) or above. Histologic correlation was available in some of the patients. The rate of concordance between positive cytologic interpretation and subsequent histologic diagnosis was calculated.

RESULTSAmongst the 15,393 liquid-based cytology cases studied, the cytologic diagnosis of 7 cases squamous cell carcinoma were all concordance with histologic diagnosis, while the rates for high-grade and low-grade squamous intraepithelial lesions were 93.6% (103/110) and 82.0% (443/540), respectively. A positive correlation was also demonstrated between detection of high-risk HPV DNA, positive cytologic interpretation and positive histologic diagnosis.

CONCLUSIONLiquid-based cytologic preparation, when coupled with standardized reporting using the Bethesda System 2001, can achieve a high diagnostic accuracy of cervical epithelial abnormalities.

Carcinoma, Squamous Cell ; pathology ; Cervical Intraepithelial Neoplasia ; pathology ; Cervix Uteri ; pathology ; DNA, Viral ; analysis ; Female ; Humans ; Papillomaviridae ; isolation & purification ; Retrospective Studies ; Uterine Cervical Neoplasms ; pathology ; Vaginal Smears ; methods

OBJECTIVETo study the clinical value of optoelectronic cervical cancer screening system (TruScreen, TS) in the screening of cervical cancer in comparison with cervical cytology test.

METHODSA total of 392 patients were screened by TS, Pap, TCT, and HPV using the pathological and colposcopical results as the golden standard. The sensitivity, specificity, Kappa value and the area of under ROC of each method and their combinations (parallel tests) were compared.

RESULTSThe sensitivity of TS, Pap, TCT and HPV were 32.2%, 42.2%, 74.4% and 47.8%, with specificity of 96.7%, 93.7%, 78.8% and 84.8% in detecting cervical cancer, respectively. The sensitivity of the parallel tests, namely TCT/HPV, TCT/TS, Pap/TS and HPV/TS were 65.6%, 87.8%, 82.2% and 86.7%, with the specificity of 81.1%, 74.5%, 75.8% and 67.2%, respectively. In light of the areas of under ROC, significant differences were noted between the parallel tests of TS/Pap and TS/TCT (P<0.05), but not between TCT/Pap and TCT/TS (P>0.05); significant differences were found between the parallel tests with TS and those without TS (P<0.05), but not between TS alone and the parallel tests incorporating TS (P>0.05), nor between the 4 parallel tests (P>0.05).

CONCLUSIONAs a new modality for early screening of cervical carcinoma, TS offers a means for real-time cancer detection with better diagnostic efficacy than Pap and HPV and equivalent efficacy to TCT. The combination of TS and cytological tests can further enhance the diagnostic accuracy.

Adolescent ; Adult ; Aged ; Cytodiagnosis ; Early Detection of Cancer ; methods ; Female ; Humans ; Middle Aged ; Sensitivity and Specificity ; Uterine Cervical Neoplasms ; diagnosis ; pathology ; Vaginal Smears ; Young Adult

Cervical Intraepithelial Neoplasia ; diagnosis ; pathology ; surgery ; Colposcopy ; Conization ; Electrosurgery ; Female ; Humans ; Hysterectomy ; methods ; Neoplasm Regression, Spontaneous ; Uterine Cervical Neoplasms ; diagnosis ; pathology ; surgery ; Vaginal Smears

Self-sampling is a method by which the subject collects the own specimens for disease detection. It has the advantages of strong privacy, convenient and simple operation, free time and place, etc. It can improve the compliance of people in remote areas, affected by traditional concepts, limited by working hours and underdeveloped transportation and medical treatment to participate in disease detection and screening. With the development of "Internet+health care" and "Internet+nursing service", home-based self-sampling testing will become a developing situation for disease detection and screening. Human immunodeficiency virus and Human papillomavirus infection bring a heavy burden to individuals and society. In the absence of effective and widespread primary prevention, secondary prevention, namely "early detection, early diagnosis and early treatment" is an effective measure to control the adverse consequences. At present, there are many researches on HPV and HIV self-sampling test, whose test results are highly reliable and highly accepted in the population, and is of great significance for improving the coverage rate of cervical cancer screening and the diagnosis rate of HIV carriers.
Female ; Humans ; Papillomaviridae ; Early Detection of Cancer/methods* ; Uterine Cervical Neoplasms/prevention & control* ; Alphapapillomavirus ; Self Care/methods* ; Papillomavirus Infections/prevention & control* ; Specimen Handling/methods* ; Mass Screening/methods* ; HIV Infections/diagnosis* ; HIV ; Vaginal Smears/methods*

OBJECTIVETo estimate the status of coincidence of high-risk HPV (HR-HPV) test and thinprep cytology test(TCT) with biopsy histopathological diagnosis. And explore the diagnostic value in the cervical cancer and precancerous lesions by combination of these two methods.

METHODSRetrospective analysis cases with the positive cytological diagnosis. Acrodding to the principle of voluntariness and informed consent, 3197 cases were selected and further investigated by high-risk human papillomavirus testing and biopsy histopathological diagnosis. We had a comparative analysis to the coincidence of TCT, high-risk HPV-DNA test and biopsy histopathological diagnosis.

RESULTSAmong 3197 cases, 58.6% cases with chronic inflammation, 26.1% cases with condyloma or CIN I, 14.1% cases with CIN II-III, and 1.2% cases with invasive cervical carcinoma. Compared with pathological biopsy, the coincident rate of the diagnosis of TCT cytology and histopathology were 21.2% (ASC-US), 28.6% (ASC-H), 39.6% (LSIL), 56.2% (HSIL) and 72.4% (cervical carcinoma), respectively. Among cases of positive TCT diagnosis, Compared HR-HPV test and histopathological diagnosis, infection rate of HR-HPV increases significantly with increasing pathological grade (chi2 = 292.354, P = 0.000 < 0.05). As the TCT diagnostic level increases, the positive rate of HR-HPV marked grows (chi2 = 144.113, P = 0.000 < 0.05).

CONCLUSIONTCT can reduce the incidence of cancer effectively. But lower sensitivity in the low-grade cervical lesions may cause missed diagnosis. Combined TCT and HR-HPV test will improve the detection rate of cervical lesions; it is an ideal method to screening cervical cancer.

Adult ; Aged ; Alphapapillomavirus ; isolation & purification ; Carcinoma ; diagnosis ; pathology ; virology ; Cytological Techniques ; methods ; Early Detection of Cancer ; methods ; Female ; Humans ; Middle Aged ; Retrospective Studies ; Uterine Cervical Neoplasms ; diagnosis ; pathology ; virology ; Vaginal Smears ; methods ; Young Adult