A comparative study of cervical cancer screening methods in a rural community setting of North India.

CONTEXT: Pap smear testing as a conventional cervical screening approach has limitations for implementation and aided visual cervical testing has varying results in different regions. AIMS: The aim of this study is to demonstrate the performance of aided visual cervical screening tests as against conventional Pap smear testing in a rural community setting of North India. SETTINGS AND DESIGN: This was a rural community based cross‑sectional study. MATERIALS AND METHODS: All 7603 ever married women of age 30‑59 years surveyed in a pocket of Dadri Tehsil, Uttar Pradesh, India were targeted for screening by Pap, visual inspection of cervix using acetic acid (VIA) and visual inspection of cervix using Lugol’s iodine (VILI) methods. Screen positives were referred to colposcopy and confirmation by histology. STATISTICAL ANALYSIS USED: Detection of histological cervical intraepithelial neoplasia (CIN) II + and CIN III + assessed separately by sensitivity, specificity and likelihood ratio’s and predictive values. Analysis of data was performed by using IBM SPSS statstics software version 16.0. RESULTS: A total of 65.6%(4988/7604) eligible women of 30‑59 years age group in the target population were screened. Out of 4988, further analysis was performed on 4148 after excluding those who did not complete all screenings, who lost to follow‑up and had missing histology results. Screen positivity rates by Pap (ASCUS and above), VIA and VILI were 2.6%, 9.7% and 13.5% respectively. Sensitivity and specificity of detecting the CIN III+ lesions were 87.5 and 98.8% for Pap, 50.0% and 96.7% for VIA and 50.0% and 95.7% for VILI respectively. CONCLUSIONS: VIA screening demonstrated as a feasible primary screening test for detecting high grade CIN and as to perform better when the Pap test is not feasible.

Community based study on sero-prevalence of syphilis in New Delhi (India).

Syphilis continues to be a major health problem in India. Data regarding sero-prevalence of syphilis is largely hospital based. Majority of community based studies have been conducted on select groups. Therefore, these studies do not reflect the true prevalence of syphilis in general population. The objective of the study was to determine the sero-prevalence of syphilis in the urban and rural communities of New Delhi, using both VDRL and TPHA for screening and FTA-ABS for confirmation and discrepant analysis. Serum specimens from 178 males and 227 females aged between 15-49 years were tested. VDRL test was put up using VDRL antigen from serologist, Kolkata. TPHA and FTA-ABS were performed using commercially available kits. 6.91% (28/405) subjects were found to be seropositive for syphilis (males 10.11%, females 4.40%). Syphilis seropositivity was found to be significantly associated with low income (p=0.02) and presence of symptoms suggestive of STIs (p=0.00) among males. Positive syphilis serology was significantly associated with trichomoniasis in females (p=0.00). Community based studies utilizing one non-treponemal test plus one treponemal test for screening purpose and an additional specific test for confirmation should be used for designing a control programme.

Why is high grade squamous intraepithelial neoplasia under-diagnosed on cytology in a quarter of cases? Analysis of smear characteristics in discrepant cases.

BACKGROUND: The accuracy of cervical cytology has been questioned due to high false negative rate. In order to improve the sensitivity of cytology it is prudent to analyze the factors which hamper with the diagnosis of high grade lesions. AIMS: To study the cyto-histologic agreement in High grade squamous intraepithelial lesions (HSIL) of uterine cervix and to analyze the smear characteristics in discrepant cases. SETTINGS AND DESIGN: Cervical smears of 100 histology proven cases of Cervical intraepithelial neoplasia III (CIN III) were retrieved and reviewed to study cyto-histologic agreement in the diagnosis of high grade lesions. The discrepant smears, undercalled on cytology, were further analyzed to determine the reasons for misinterpretations. Statistical analysis was performed to find out any significant factors for discrepancies. RESULTS: Cytology was able to correctly identify 74 HSILs while in 26 cases a diagnosis of Low grade squamous intraepithelial lesions (LSIL) or below was given. On review, 16 of these non correlating cases could be reclassified as HSIL on cytology while in 10 the diagnosis of LSIL or less persisted. 12/16 (75%) discrepant cases, reclassified as HSIL represented interpretive errors. Sampling errors (7/10) and air drying (5/10) were more frequent in under diagnosed cases. The statistical analysis did not yield any significant differences in the two review groups. CONCLUSION: 26% of HSIL cases were underdiagnosed on cervical smears. The major confounding factors responsible for under interpretation on cytology included air drying artifacts and metaplastic maturation of abnormal cells.

Atypical squamous cells of undetermined significance: is it worthwhile to qualify them further?

BACKGROUND: In Bethesda System of reporting cervico-vaginal smears, the equivocal epithelial cell abnormalities have been categorised as "atypical squamous and glandular cells of undetermined significance" (ASCUS and AGUS). These abnormalities may harbour minor lesions attributed to mere inflammatory changes to potentially serious high grade lesions. It is recommended to further qualify these lesions according to whether they favor a reactive or a neoplastic outcome. AIMS: We undertook the present study to assess the significance of ASCUS qualifiers. MATERIAL AND METHODS: A total of 12071 women were screened for early detection of cancer cervix. The women with ASCUS diagnosis were further qualified as ASCUS favor reactive and ASCUS favor SIL (Squamous intraepithelial lesion) according the Bethesda 1991 system of reporting. ASCUS-reactive cases were followed up by a repeat smear examination and persistent ASCUS cases were taken up for colposcopy and biopsy if indicated. All ASCUS-SIL cases were taken up for immediate colposcopy. RESULTS: The pick up rate of high grade lesions was not significantly different (P=0.47; Chi square test) on the follow up of ASCUS-reactive (2/222) and ASCUS-SIL (2/130) groups. The low grade lesions were picked up in 10/222 ASCUS-reactive and 58/130 in ASCUS-SIL, which was statistically significant (P < 0.001). CONCLUSIONS: The results of our study indicate that it is not worthwhile to qualify these lesions as majority of ASCUS-SIL also revealed only low grade epithelial which have a benign biological behaviour.

Role of guided fine needle aspiration cytology in diagnosis and classification of liver malignancies.

Ultrasound or CT-guided fine needle aspiration was performed on 212 patients with space occupying lesions of the liver during a period of 5 years (1986-1990) to study the utility of fine needle aspiration (FNAC) in the diagnosis of hepatic malignancies. The initial FNAC diagnosis was malignancy in 91 cases. However, following review of the smears by one of the investigators (DKD) 93 (43.9%) cases were found to be malignant. Age of the patients with malignancy ranged from 20 days to 85 years. Male to female ratio was 57:36. The clinical diagnosis was malignancy in 58% which improved to 72% following imaging whereas nonspecific diagnosis was reduced from 34% to 20%. The primary malignancies consisted of 21 cases of hepatocellular carcinoma (HCC) and 7 hepatoblastomas. There were 61 metastatic lesions which included 43 adenocarcinomas, 6 small cell anaplastic carcinomas, 3 leiomyosarcomas, 2 cases each of malignant melanoma, paraganglioma and germ cell tumour, and one case each of squamous cell carcinoma, neuroendocrine tumour and undifferentiated carcinoma/soft tissue sarcoma. In two cases decision between HCC and secondaries was not possible. There were also two cases of non-Hodgkin's lymphoma. Thirty six percent of primary malignancies and 58% of secondaries were correctly diagnosed or suggested as one of the possibilities by combined clinical examination and imaging prior to FNAC. Thus, US/ CT guided FNAC played an important role in diagnosis and classification of malignancies of liver.