Multiple gallbladders

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Gallbladder duplication is a rare anatomic anomaly characterised by the presence of an accessory gallbladder.

Epidemiology

Prevalence is estimated at 1 in 3000.

Classification

Boyden's classification divides gallbladder duplication into three groups:

bilobed, incomplete gallbladder division with one common cystic duct
complete gallbladder duplication with separate cystic ducts that lead to a common hepatic duct
complete gallbladder duplication with a common cystic duct entering the common hepatic duct

Its classification is more easily applied today using MRI, since ultrasound does not always allow adequate visualization of the cystic duct.

Differential diagnosis

Imaging differential considerations include

gallbladder diverticulum
gallbladder fold
Phrygian cap
choledocal cyst
focal region of pericholecystic fluid
focal adenomyomatosis
intraperitoneal fibrous bands (Ladd bands)

~~-<li>bilobed, incomplete gallbladder division with one common <a title="Cystic duct" href="/articles/cystic-duct">cystic duct</a>~~
+<li>bilobed, incomplete gallbladder division with one common <a href="/articles/cystic-duct">cystic duct</a>
~~-<li>complete gallbladder duplication with separate cystic ducts that lead to a <a title="Common hepatic duct" href="/articles/common-hepatic-duct">common hepatic duct</a>~~
+<li>complete gallbladder duplication with separate cystic ducts that lead to a <a href="/articles/common-hepatic-duct">common hepatic duct</a>

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Multiple gallbladders

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Epidemiology

Classification

Differential diagnosis

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