Transabdominal Ultrasound Detection of Pancreatic Cysts Incidentally Detected at CT, MRI, or Endoscopic Ultrasound

OBJECTIVE. The objective of our study was to evaluate the detection rate of incidental pancreatic cysts on transabdominal ultrasound (TAUS) as well as factors influencing detection rates. MATERIALS AND METHODS. Nine hundred thirty-eight patients with 1064 pancreatic cysts who underwent both TAUS and other imaging examinations including CT, MRI, or endoscopic ultrasound (EUS) were enrolled. We reviewed formal reports and assessed the effect of cyst size and location and the effect of the correlative images for cyst detection on TAUS. Statistical analyses were performed using the chi-square test, t test, and Cramer value (V). RESULTS. The overall detection rate of TAUS was 88.3% (940/1064). Cysts detected on TAUS were more often in younger patients and male patients. The detected cysts (median, 13 mm; interquartile range [IQR], 8–18 mm) were significantly larger than the undetected cysts (median, 10 mm; IQR, 6–14 mm) (p < 0.0001). However, waist circumference did not affect the detection rate. The detection...