what are the symptoms for this condition?
Pain, nausea, vomiting, fever and in some cases jaundice.
Gallstone
Gallstones, regardless of size or number, may be asymptomatic, even for years. Such "silent stones" do not require treatment. A characteristic symptom of a gallstone attack is the presence of colicky pain in the upper-right side of the abdomen, often accompanied by nausea and vomiting. The pain steadily increases for approximately 30 minutes to several hours. A person may also experience referred pain between the shoulder blades or below the right shoulder. Often, attacks occur after a particularly fatty meal and almost always happen at night, and after drinking.

In addition to pain, nausea, and vomiting, a person may experience a fever. If the stones block the duct and cause bilirubin to leak into the bloodstream and surrounding tissue, there may also be jaundice 
where does the pancreas secrete digestive enzymes into Duodenum. what are the different diseases that affect this organ? Pancreatitis, diabetes mellitus, and pancreatic cancer. what kind of stones tend to form in this organ? Gallstones. how are these formed? It is formed out of precipitated bile components.
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Gallstone [SEP] Signs and symptoms
Gallstones, regardless of size or number, may be asymptomatic, even for years. Such "silent stones" do not require treatment. A characteristic symptom of a gallstone attack is the presence of colicky pain in the upper-right side of the abdomen, often accompanied by nausea and vomiting. The pain steadily increases for approximately 30 minutes to several hours. A person may also experience referred pain between the shoulder blades or below the right shoulder. Often, attacks occur after a particularly fatty meal and almost always happen at night, and after drinking. In addition to pain, nausea, and vomiting, a person may experience a fever.