This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Sensitivity of conventional PAP smear in picking up cervical cancer is: September 2007 
Select and explain. 
A. 70%, B. 80%, C. 90%, D. 100%
B: 80%
Answer: B: 80% 
Explanation: Ans. B: 80% A. In the conventional Pap smear, the physician collecting the cells smears them on a microscope slide and applies a fixative Studies of the accuracy of conventional cytology repo: Sensitivity 80% (False negative rate is 20%) Specificity 94% B. Since the mid-1990s, techniques based on placing the sample into a l containing a liquid medium that preserves the cells have been increasingly used. The media are primarily ethanol-based for Sure-Path and methanol for Thin Prep Studies of the accuracy of liquid based monolayer cytology repo: Sensitivity 61% to 66% Specificity 82% to 91%