CEACAM5 and cervical cancer: Sookha et al. showed that the sensitivity, specificity and accuracy of FDG-PET/CT for detecting recurrent cervical cancer were 100%, 70.6% and 88.1%, respectively; the accuracy of using combined elevated SCC-Ag and carcinoembryonic antigen (CEA) levels was 100% compared to 90.0% when using only elevated SCC-Ag levels, and 33.3% when only elevated CEA levels, were used (p = 0.036) [29].