Grisolia et al reported a simple score for identifying a parasitic hepatic cyst based on ultrasound findings. The authors are from the University of Pavia.
Patient selection: hepatic cyst detectable on ultrasonography
(1) double layer sign
(2) regular borders
(3) regular shape (oval or round)
(5) sex of the patient
(6) stable appearance on follow-up ultrasound
(7) number of septae
(8) appearance of septae
double layer sign
stable on follow-up
number of septae
2 or more
appearance of septae
total score =
= SUM(points for all of the parameters)
• minimum score: 2
• maximum score: 15
A cyst is nonparasitic if:
(1) a unilocular cyst and total score >= 6
(2) a septated cyst and total score >= 10.
Routine serology can provide supplemental information.
To read more or access our algorithms and calculators, please log in or register.