Cancer of the gallbladder is a rare disease in which malignant (cancer) are found in the tissues of the gallbladder. The gallbladder is a pear-shaped organ that sits just below the liver in the upper abdomen. It stores bile, a fluid produced by the liver to digest fat. When food is broken down in the stomach and intestines, bile is released from the gallbladder through a tube called the bile duct, which connects the gallbladder and liver to the first part of the small intestine.
Wall of the gallbladder has 3 main layers of tissue.
Mucosa (inner) layer.
Muscle (middle, muscle) layer.
Serosal (outermost) layer.
Among these layers supports connective tissue. Primary gallbladder cancer starts and spreads to the innermost layer of the outer layers as it grows.
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