What is the normal liver size at the midclavicular line?

What is the normal liver size at the midclavicular line?

• A. 11-13 cm
• B. 12-14 cm
• C. 13-15 cm
• D. 14-16 cm

Answer: (C)

Measuring liver size on ultrasound focuses on the craniocaudal length of the right lobe along the midclavicular line. In a healthy adult, the normal hepatic length at that line is about 13–15 cm. The measurement is taken in the sagittal plane with the probe aligned to the midclavicular line, from the diaphragmatic dome down to the inferior liver margin. This range reflects typical adult liver size; readings smaller than this suggest a smaller liver and readings larger can indicate hepatomegaly. Therefore, 13–15 cm is the standard reference, making it the best choice.

Measuring liver size on ultrasound focuses on the craniocaudal length of the right lobe along the midclavicular line. In a healthy adult, the normal hepatic length at that line is about 13–15 cm. The measurement is taken in the sagittal plane with the probe aligned to the midclavicular line, from the diaphragmatic dome down to the inferior liver margin. This range reflects typical adult liver size; readings smaller than this suggest a smaller liver and readings larger can indicate hepatomegaly. Therefore, 13–15 cm is the standard reference, making it the best choice.