An axial CT of the upper abdomen shows both adrenal glands. Which statement correctly distinguishes the left adrenal gland from the right on cross-sectional imaging?
- A The left gland is linear or inverted V shaped, while the right is triangular
- B The left gland is triangular or inverted Y shaped, while the right is linear or inverted V shaped ✓
- C Both glands are consistently triangular in shape
- D The left gland lies entirely posterior to the upper pole of the left kidney
Correct answer: B. The left gland is triangular or inverted Y shaped, while the right is linear or inverted V shaped
Explanation
The left adrenal gland classically appears triangular or inverted Y shaped and sits anteromedial to the upper pole of the left kidney, close to the pancreatic tail and splenic vessels. The right gland is flatter, linear or inverted V shaped, and lies between the IVC and the right crus. Option D fails because the left gland is anterior and medial, never purely posterior to the kidney.
Reference: Gray's Anatomy, 42nd ed.
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