MT-CO1 and cholesteryl ester measurement: Among FFPE cyst samples of 80 CE patients, 91.3% (95% CI: 83.0–95.7) and 83.8% (95% CI: 74.2–90.3) were amplified, and 80.8% (95% CI: 70.3–88.2) and 74.6% (95% CI: 63.1–83.5) successfully sequenced for cox1 and nad1, respectively.