Which one of the following statements regarding the management of hydatid cysts is false?
a-extremely small cysts may be managed conservatively provided they are followed up to monitor growth .
b-medical management is successful in the majority of cases .
c-medical therapy is usually used to supplement surgical intervention .
d -the most common surgical technique is that of evacuation of the content and de -roofing of the cyst and the placement of an omental patch in the cavity.​