Gallbladder duplication
Gallbladder duplication is a rare anatomic anomaly characterized by the presence of an accessory gallbladder. There is no increased risk for malignancy or calculi compared to a single gallbladder.
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Epidemiology
Prevalence is estimated at 1 in 4000 live births 3.
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)
- a dilated cystic duct remnant
Related Radiopaedia articles
Anatomy: Abdominopelvic
- skeleton of the abdomen and pelvis
- muscles of the abdomen and pelvis
- spaces of the abdomen and pelvis
- anterior abdominal wall
- posterior abdominal wall
- abdominal cavity
- pelvic cavity
- perineum
- abdominal and pelvic viscera
- gastrointestinal tract
- spleen
- hepatobiliary system
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endocrine system
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adrenal gland
- adrenal vessels
- chromaffin cells
- variants
- pancreas
- organs of Zuckerkandl
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adrenal gland
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urinary system
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kidney
- renal pelvis
- renal sinus
- avascular plane of Brodel
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variants
- number
- fusion
- location
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- embryology
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kidney
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female reproductive system
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- broad ligament (mnemonic)
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- embryology
- blood supply of the abdomen and pelvis
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abdominal aorta
- inferior phrenic artery
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common iliac artery
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internal iliac artery (mnemonic)
- anterior division
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- variant anatomy
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abdominal aorta
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- watershed areas
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- innervation of the abdomen and pelvis
- lumbar plexus
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sacral plexus
- lumbosacral trunk
- sciatic nerve
- superior gluteal nerve
- inferior gluteal nerve
- nerve to piriformis
- perforating cutaneous nerve
- posterior femoral cutaneous nerve
- parasympathetic pelvic splanchnic nerves
- pudendal nerve
- nerve to quadratus femoris and inferior gemellus muscles
- nerve to internal obturator and superior gemellus muscles
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