What is the average splenic thickness?

What is the average splenic thickness?

• A. 4 cm
• B. 3 cm
• C. 5 cm
• D. 6 cm

Answer: (A)

Normal splenic thickness on ultrasound reflects the anteroposterior (front-to-back) dimension of the spleen. In adults, this dimension is typically around 3 to 4 cm, with 4 cm representing the average. While the length is the main measure used to define splenomegaly (usually when the spleen is longer than about 13 cm), the thickness follows a similar normal range. A thickness around 5–6 cm would suggest thickening beyond normal and possible splenic enlargement, whereas 3 cm is still within normal limits but toward the lower end. Therefore, 4 cm sits at the center of the normal range and is the best estimate for average splenic thickness.

Normal splenic thickness on ultrasound reflects the anteroposterior (front-to-back) dimension of the spleen. In adults, this dimension is typically around 3 to 4 cm, with 4 cm representing the average. While the length is the main measure used to define splenomegaly (usually when the spleen is longer than about 13 cm), the thickness follows a similar normal range. A thickness around 5–6 cm would suggest thickening beyond normal and possible splenic enlargement, whereas 3 cm is still within normal limits but toward the lower end. Therefore, 4 cm sits at the center of the normal range and is the best estimate for average splenic thickness.