Which of the statements regarding Calot’s triangle are correct?
1. Common hepatic duct forms the medial boundary of the Calot’s triangle
2. Inferior surface of the right lobe of the liver forms the superior boundary of Calot’s triangle
3. Right hepatic artery is usually found as a content of the Calot’s triangle
4. Cystic duct and medial border of gall bladder forms the lateral border of Calot’s triangle
Select the correct answer using the code given below:

A.	1, 2 and 3
B.	2, 3 and 4
C.	1, 3 and 4
D.	1, 2 and 4

Show Answer

Correct Answer » D Explanation

Calot’s Triangle (Cystohepatic Triangle)

Calot’s triangle is an important surgical landmark identified during:

• Open cholecystectomy
• Laparoscopic cholecystectomy

Proper identification helps avoid:

• Common bile duct injury
• Hepatic artery injury

Statement-wise Analysis

1. Common hepatic duct forms the medial boundary

Correct

The:

Common hepatic duct

forms the medial boundary of Calot’s triangle.

2. Inferior surface of the right lobe of the liver forms the superior boundary

Correct

The:

Inferior (visceral) surface of the liver

forms the superior boundary.

3. Right hepatic artery is usually found as a content of Calot’s triangle

Incorrect

The:

Cystic artery

is the usual and important arterial content of Calot’s triangle.

Although the:

Right hepatic artery may occasionally traverse the triangle

(Moynihan’s hump/caterpillar hump),

it is:

• Variable
• Not a constant or usual content

Therefore statement 3 is incorrect.

4. Cystic duct and medial border of gallbladder form the lateral boundary

Correct

The lateral boundary is formed by:

• Cystic duct
• Adjacent gallbladder neck/medial gallbladder border

Thus statement 4 is accepted as correct in modern surgical description.