Guidelines for gallbladder polyps are not readily available. Here at last are some – gallbaldder attacks suggest surgery. Chance of malignancy is slight unless polyps are over 10 mm size and in someone over 50.
Cir Esp. 2012 Dec 12. pii: S0009-739X(12)00189-3.
Surgical indications in gallbladder polyps.
Morera-Ocón FJ, Ballestín-Vicente J, Calatayud-Blas AM, de Tursi-Rispoli LC, Bernal-Sprekelsen JC. abstract here
Followup ultrasounds are useful.