scholarly journals A Comparative Study of Manual Liquid-Based Cytology with the Conventional Pap Smear for Cervical Cancer Screening in a Tertiary Care Hospital of Mandya, Karnataka

2021 ◽  
Vol 8 (16) ◽  
pp. 1009-1014
Author(s):  
Manjunath M.R ◽  
Sheetal Sheetal
Keyword(s):  
Cervical Cancer ◽  
Pap Smear ◽  
Invasive Cervical Cancer ◽  
Tertiary Care ◽  
Human Papillomaviruses ◽  
Care Hospital ◽  
Cancer Cervix ◽  
Hpv Dna ◽  
Bethesda System ◽  
Liquid Based Cytology

BACKGROUND A long pathological process for investigation of precursor lesion squamous intraepithelial lesion (SIL) leads to invasive cervical cancer. This SIL can be detected much earlier before the lesion progresses to invasive cancer. For greater than fifty years, screening for cancer cervix was done by conventional scrape smears and stained by Papanicolaou [Pap] stain but conventional Pap smears (CPAP) have been reported to have low sensitivity. To overcome these drawbacks manual liquid-based cytology [MLBC] was introduced. The objective of this study was to screen females for cervical cancer using CPAP and MLBC techniques and compare the results of these techniques. METHODS Cervical cytology samples were obtained from 120 non-pregnant females through specialised Uprep cytobrush with a detachable head. Thus, obtained samples were first smeared onto a clean glass slide for CPAP smear, and the whole head to cytobrush was dropped into the specialised Uprep liquid preservative medium and processed by using Uprep Cytospin machine to obtain MLBC smears. Both the smears were stained by conventional Pap stain and reported according to 2014 Bethesda system. RESULTS In this study, the CPAP method had a greater number of unsatisfactory smears than that of MLBC method which was statistically significant. MLBC identified more number of intraepithelial lesions when compared to CPAP and MLBC had an increased detection rate [IDR] of 73.68 % over CPAP. CONCLUSIONS Analysis of our results showed that MLBC had more advantages over CPAP. Since the cost effective MLBC has an improved rate of detection of abnormal lesions, MLBC can be used as a routine technique for screening of cancer cervix in India. Also, MLBC offers an important advantage of performing both human papillomaviruses deoxyribonucleic acid (HPV DNA) test and cytological analysis on a single sample. KEYWORDS Cervical Cancer, Conventional Pap Smear, Manual Liquid Based Cytology, Human Papilloma Virus (HPV DNA), Bethesda System

scholarly journals Unsatisfactory rate in liquid-based cervical samples as compared to conventional smears: A study from tertiary care hospital

CytoJournal ◽  
2016 ◽  
Vol 13 ◽  
pp. 14 ◽  
Author(s):  
Nalini Gupta ◽  
Vikrant S. Bhar ◽  
Arvind Rajwanshi ◽  
Vanita Suri
Keyword(s):  
Cell Count ◽  
Pap Smear ◽  
Tertiary Care ◽  
Developed Countries ◽  
Care Hospital ◽  
Sample Collection ◽  
Bethesda System ◽  
Liquid Based Cytology ◽  
The Difference ◽  
The Bethesda System

Background: Developed countries adopted liquid-based cytology (LBC) cervical cytology, partly because of its lower proportions of unsatisfactory (U/S)/inadequate samples. This study was carried out to evaluate effect on the rate of U/S samples after introduction of LBC in our laboratory. Materials and Methods: An audit of U/S cervical samples was performed, which included split samples (n = 1000), only conventional Pap smear (CPS) smears (n = 1000), and only LBC samples (n = 1000). The smears were reviewed by two observers independently, and adequacy for the samples was assessed as per The Bethesda System 2001. The reasons for U/S rate in split samples were categorized into various cytologic and/or technical reasons. Results: U/S rate was far less in only LBC samples (1.2%) as compared to only CPS (10.5%) cases. Cases in the satisfactory but limited category were also less in only LBC (0.4%) as compared to only CPS (3.2%) samples. The main reasons for U/S smears in split samples were low cell count (37.2% in CPS; 58.8% in LBC). The second main reason was low cellularity with excess blood and only excess blood in CPS samples. Conclusion: There was a significant reduction of U/S rate in LBC samples as compared to CPS samples, and the difference was statistically significant. The main cause of U/S samples in LBC was low cellularity indicating a technical fault in sample collection. The main cause of U/S rate in CPS was low cellularity followed by low cellularity with excess blood. Adequate training of sample takers and cytologists for the precise cell count to determine adequacy in smears can be of great help in reducing U/S rate.

scholarly journals Comparison of conventional Papanicolaou smear and liquid‑based cytology: a study of cervical cancer screening at a tertiary care center in Bengaluru

2021 ◽  
Vol 10 (8) ◽  
pp. 3106
Author(s):  
Chaitra Krishna ◽  
Savitha Chandraiah ◽  
Chandana Krishna
Keyword(s):  
Cervical Cancer ◽  
Second Generation ◽  
Pap Smear ◽  
Care Center ◽  
Tertiary Care ◽  
Care Hospital ◽  
Cervical Lesions ◽  
Cervical Neoplasm ◽  
Cytological Abnormality ◽  
Liquid Based Cytology

Background: Cervical cancer is the fourth commonest cancer affecting women worldwide and the second most common cancer in women aged 15-44 years. The Papanicolaou (Pap) smear has been the cornerstone of screening for cervical neoplasm for the last 50 years. Liquid-based cytology (LBC) was introduced in mid-1990s as an alternative technique to process cervical samples has many benefits over Pap. A new second generation technique, Liquiprep was introduced after a decade has the advantage of a much lower cost. However, the information available on second generation liquid based cytology is limited. The objective was to look for the efficacy of LBC and to compare it to that of conventional cytology.Methods: This hospital based comparative study was undertaken 100 women who attended gynaecology OPD during 2017 at a tertiary care hospital in Bengaluru. Two cervical smears were simultaneously prepared from each subject, one for Pap smear and another for LBC followed by colposcopy and biopsy.Results: Among the study subjects, 89% of Pap smear analysis and 100% of smears in LBC showed satisfactory smear. Cytological abnormality was detected in 11% and 21% in pap and LBC, respectively. The present study showed higher sensitivity and specificity of 100% and 75% by LBC when compared to Pap smear (55% and 100% respectively).Conclusions: The present study showed that liquid based cytology is better in detecting cervical lesions when compared to conventional smear. 

scholarly journals Antibodies against Early Proteins of Human Papillomaviruses as Diagnostic Markers for Invasive Cervical Cancer

1998 ◽  
Vol 36 (2) ◽  
pp. 475-480 ◽  
Author(s):  
Wolfgang Meschede ◽  
Klaus Zumbach ◽  
Joris Braspenning ◽  
Martin Scheffner ◽  
Luis Benitez-Bribiesca ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Invasive Cervical Cancer ◽  
Human Papillomaviruses ◽  
Antibody Detection ◽  
Diagnostic Tools ◽  
Immunological Monitoring ◽  
Hpv Dna ◽  
Native Proteins ◽  
Human Sera ◽  
E6 And E7

Cervical cancer is the most prevalent tumor in developing countries and the second most frequent cancer among females worldwide. Specific human papillomaviruses (HPVs) and, most notably, HPV types 16 and 18 are recognized as being causally associated with this malignancy. Antibodies against early HPV proteins E6 and E7 have been found more often in patients with tumors than in controls. Existing peptide enzyme-linked immunosorbent assays (ELISAs) for the detection of anti-E6 and anti-E7 antibodies in human sera have low levels of sensitivity and specificity and thus are not suitable for use as diagnostic tools. Based on highly purified recombinant native proteins, we developed four sandwich ELISAs for the detection of antibodies against HPV type 16 and 18 E6 and E7 proteins. We demonstrate their sensitivities and high degrees of specificity for cervical cancer. Among a total of 501 serum specimens from unselected patients with invasive cervical cancer, 52.9% reacted positively in at least one of the four assays. In contrast, among 244 serum specimens from control subjects without cervical cancer, only 2 reactive serum specimens (0.8%) were found. For 19 of 19 antibody-positive patients, the HPV type indicated by seroreactivity was identical to the HPV DNA type found in the tumor, which also indicates a high degree of specificity for antibody detection with respect to HPV type. In a direct comparison of 72 serum specimens from patients with cervical cancer, 56% of the specimens reacted in at least one of the four protein ELISAs, whereas 40% reacted in at least one of seven peptide ELISAs covering the four antigens. These assays could be of value for the detection of invasive cervical cancer in settings in which cytology-based early tumor screening is not available, for the clinical management of patients diagnosed with cervical cancer, and for the immunological monitoring of E6 and E7 vaccination trials.

scholarly journals A study on cervical cancer screening using pap smear in urban area in state of Meghalaya, India

2018 ◽  
Vol 7 (8) ◽  
pp. 3113
Author(s):  
Priti Mishra ◽  
Ragini Thapa ◽  
Arvind Kumar Dinkar
Keyword(s):  
Cervical Cancer ◽  
Pap Smear ◽  
Invasive Cervical Cancer ◽  
Pap Test ◽  
Military Hospital ◽  
Normal Cytology ◽  
Pap Smear Test ◽  
Common Cancer ◽  
Bethesda System ◽  
Preinvasive Lesion

Background: Cancer cervix is fourth most common cancer in world second most common in India. The objective of the study is to identify abnormal pap smear cytology in women undergoing the test.Methods: This retrospective study conducted in 200 women attending gynae OPD of Military Hospital, Shillong, Meghalaya, India between January 2016 to December 2017. Pap smear test was done, and classification was done as per Bethesda system 2014.Results: 105 women had normal cytology findings and 23 had abnormal cytology.Conclusions: Cervical cancer is the most common cancer for which screening is done. If pap smear is done every 3 years as per the guidelines mortality due to cervical cancer can be reduced. Every woman should undergo pap test at least once in her life before the age of 45 years. Timely screening of preinvasive lesion allows prevention from invasive cervical cancer.

P16INK4A Immunohistochemistry as a Gold Standard for Cervical Cancer and Precursor Lesions Screening

2020 ◽  
Author(s):  
Mahdieh FARZANEHPOUR ◽  
Ahad MUHAMMADNEJAD ◽  
Setareh AKHAVAN ◽  
Mir Nader EMAMI RAZAVI ◽  
Somayeh JALILVAND ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Invasive Cervical Cancer ◽  
Immunohistochemical Analysis ◽  
Human Papillomaviruses ◽  
Low Grade ◽  
Operating Characteristics ◽  
Hpv Dna ◽  
Diagnosis And Prognosis ◽  
Tissue Specimens ◽  
Intraepithelial Lesions

Background: High-risk (HR) Human papillomaviruses (HPVs) are known as the main factors implicated in the pathogenesis of cervical preinvasive and invasive lesions. Therefore, the presence or absence of HR-HPV can be followed for the prognosis of low-grade and high-grade squamous intraepithelial lesions. Since the overexpression of p16INK4a protein depends on the presence of transcriptionally-active HPV, and due to its availability and simple interpretation, it may be considered as a proper marker to diagnose cervical cancer. Methods: An immunohistochemical analysis of p16INK4a was performed in 72 cervical tissue specimens at Imam Khomeini Complex Hospital (Tehran, Iran) from 2016 to 2018. The performance parameters were calculated and compared using receiving operating characteristics curve (ROC) details. Results: p16INK4a is significantly up-regulated in the cervical cancer samples in comparison with that in normal samples. Moreover, the ROC data showed the potential ability of p16INK4a under determined conditions as a diagnostic marker for CIN 2-3 staging and invasive cervical cancer. The molecular typing disclosed the attendance of HPV DNA in 44.4% of cases (32/72) with a predominance of HPV type 16. Conclusion: The molecular biomarker p16INK4a can be a good candidate for the early diagnosis and prognosis of cervical cancer in HPV-infected patients. Considering the increase in the expression level of p16INK4a in cancer and precancer tissues, p16INK4a may be used for early detection of cervical cancer.

scholarly journals The Epidemiology of Human Papillomavirus Infection and Cervical Cancer

2007 ◽  
Vol 23 (4) ◽  
pp. 213-227 ◽  
Author(s):  
F. Xavier Bosch ◽  
Silvia de Sanjosé
Keyword(s):  
Cervical Cancer ◽  
Invasive Cervical Cancer ◽  
Intraepithelial Neoplasia ◽  
Hpv Infection ◽  
Human Papillomaviruses ◽  
Transmitted Infection ◽  
Hpv Dna ◽  
Sexually Transmitted ◽  
Papillomavirus Infection ◽  
Simplex Virus

Cervical cancer has been recognized as a rare outcome of a common Sexually Transmitted Infection (STI). The etiologic association is restricted to a limited number of viral types of the family of the Human Papillomaviruses (HPVs). The association is causal in nature and under optimal testing systems, HPV DNA can be identified in all specimens of invasive cervical cancer. As a consequence, it has been claimed that HPV infection is a necessary cause of cervical cancer. The evidence is consistent worldwide and implies both the Squamous Cell Carcinomas (SCC), the adenocarcinomas and the vast majority (i.e. > 95%) of the immediate precursors, namely High Grade Squamous Intraepithelial Lesions (HSIL)/Cervical Intraepithelial Neoplasia 3 (CIN3)/Carcinomain situ. Co-factors that modify the risk among HPV DNA positive women include the use of oral contraceptives (OC) for five or more years, smoking, high parity (five or more full term pregnancies) and previous exposure to other sexually transmitted diseases such as Chlamydia Trachomatis (CT) and Herpes Simplex Virus type 2 (HSV-2). Women exposed to the Human Immunodeficiency Virus (HIV) are at high risk for HPV infection, HPV DNA persistency and progression of HPV lesions to cervical cancer.

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