Beaver Tail Liver is a normal anatomical variation of the liver characterized by an elongated lateral extension of the left hepatic lobe, which may partially surround or closely approximate the spleen. It is commonly detected incidentally on ultrasound and should not be mistaken for splenomegaly or a pathological abdominal mass. Anatomy of Beaver Tail Liver The elongated left hepatic lobe typically extends laterally across the left upper abdomen, sometimes wrapping around the spleen and creating a beaver tail-like appearance.
FindingsLiver is normal in size and echotexture. The left hepatic lobe demonstrates marked lateral extension around the spleen, consistent with a Beaver Tail Liver variant. No focal hepatic lesion or biliary dilatation is seen.
Impression:Beaver Tail Liver (normal anatomical variant of the left hepatic lobe). No associated focal abnormality.
1. What is Beaver Tail Liver?
A. Congenital absence of the left lobe
B. Elongation of the left hepatic lobe around the spleen
C. Enlargement of the caudate lobe
D. Fatty infiltration of the liver
2. Beaver Tail Liver mainly involves which hepatic lobe?
A. Right lobe
B. Caudate lobe
C. Left lobe
D. Quadrate lobe
3. Beaver Tail Liver is considered:
A. A malignant lesion
B. A normal anatomical variant
C. A liver abscess
D. A traumatic injury
4. On ultrasound, Beaver Tail Liver may simulate pathology involving which organ?
A. Pancreas
B. Kidney
C. Spleen
D. Gallbladder
5. Which imaging modality commonly detects Beaver Tail Liver incidentally?
A. Ultrasound
B. Mammography
C. Fluoroscopy
D. Hysterosalpingography
6. Beaver Tail Liver is also known as:
A. Accessory liver syndrome
B. Elongated left hepatic lobe
C. Floating liver sign
D. Hepatic cleft anomaly
7. The elongated hepatic tissue in Beaver Tail Liver usually extends:
A. Inferior to the kidney
B. Around the spleen
C. Behind the pancreas
D. Into the pelvis
8. Why is recognition of Beaver Tail Liver important?
A. It always requires surgery
B. It may mimic splenic or perisplenic pathology
C. It causes portal hypertension
D. It leads to cirrhosis
9. Which of the following is TRUE regarding Beaver Tail Liver?
A. It is always symptomatic
B. It is associated with liver failure
C. It is usually asymptomatic
D. It commonly contains calcification
10. In Beaver Tail Liver, the echotexture of the elongated portion is usually:
A. Anechoic
B. Hyperechoic with shadowing
C. Similar to normal liver parenchyma
D. Completely cystic
1. __________
2. __________
3. __________
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5. __________
6. __________
7. __________
8. __________
9. __________
10. __________
1. B, 2. C, 3. B, 4. C, 5. A, 6. B, 7. B,8. B, 9. C, 10. C
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