Dogs can have asymptomatic gallstones
with no apparent signs on routine lab tests.
1) Patients with asymptomatic gallstones have less than 20% chance of ever developing symptoms, and the risks associated with "Prophylactic" operation outweigh the potential benefit of surgery in most patients (Ransohoff et al, 1983; Ransohoff and Gracie W, 1993).
Out of these 240 cases, 4 cases were having asymptomatic gallstones which were diagnosed incidentally but were subjected to cholecystectomy on patients' will and consent.
Laparoscopic cholecystectomy has doubled the number of cholecystectomies being performed in most countries where it is widely practised,  yet the benign natural history of asymptomatic gallstones
are present in 10-15% of the adult European population and each year approximately 2% of these will develop symptoms.
The main indication for cholecystectomy remains biliary colic and as a general rule asymptomatic gallstones
do not warrant removal of the gallbladder.
A MANY people have asymptomatic gallstones
- they do not cause any problem or pain and treatment is not needed.
Controversy exists regarding the development of symptoms in patients with asymptomatic gallstones
, ranging from a reported incidence of symptom development of 10% to 30% during a follow-up period of 2 to 15 years.
3) Previous studies have indicated that diagnostic ultrasound is capable of detecting asymptomatic gallstones and other gallbladder abnormalities in 2.
Three of the seven patients who were followed up 1 year after receiving a diagnosis of asymptomatic gallstones returned with symptoms requiring medical or surgical intervention.
Thus, in 20 years, the majority of patients who have asymptomatic gallstones
will develop symptoms.