An in-depth knowledge of the wide spectrum of normal gallbladder appearances is vital to appropriate clinical workup and the correct diagnosis of patients with upper abdominal symptoms. This book covers the range of appearances of the normal gallbladder and its variants, including discussions of anatomy, embryology, and imaging techniques to promote a better understanding of the subject. Anomalies of number, location, and form are each addressed in separate chapters, and discussions of imaging artifacts of the gallbladder and pseudolesions, which can mimic gallbladder disease, are also included. A short chapter on the appearance of the fetal gallbladder is included to round out this comprehensive volume.