Question:medium
Which of the following is NOT a boundary of the structure shown in the given image?
Which of the following is NOT a boundary of the structure shown in the given image?
Show Hint
Calot's triangle borders are common hepatic duct, cystic duct, and inferior liver surface.
Updated On: Jun 23, 2026
- Common hepatic duct
- Cystic duct
- Inferior surface of the liver
- Gall bladder
Show Solution
The Correct Option is D
Solution and Explanation
Step 1: Name the space. The triangle at the liver hilum bounded by ductal structures is Calot's (cystohepatic) triangle, the key landmark during cholecystectomy.
Step 2: List its sides. Going around, the medial side is the common hepatic duct, the inferior side is the cystic duct, and the superior side is the inferior surface of the liver.
Step 3: Recall the contents versus the borders. The cystic artery runs inside the triangle, so it is a content; in the old 1891 version it was treated as the superior border, but the modern border is the liver edge.
Step 4: Identify the odd one out. Three options are genuine borders; the gall bladder is the organ the triangle helps expose, not a side of it.
\[\boxed{Gall\ bladder}\]
Step 2: List its sides. Going around, the medial side is the common hepatic duct, the inferior side is the cystic duct, and the superior side is the inferior surface of the liver.
Step 3: Recall the contents versus the borders. The cystic artery runs inside the triangle, so it is a content; in the old 1891 version it was treated as the superior border, but the modern border is the liver edge.
Step 4: Identify the odd one out. Three options are genuine borders; the gall bladder is the organ the triangle helps expose, not a side of it.
\[\boxed{Gall\ bladder}\]
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