Transverse contrast-enhanced CT images acquired during the arterial phase through the mid-spleen demonstrates the medial internal lobe of the spleen (red arrows) insinuated between the compressed tail of the pancreas (white arrows) and the left kidney. The mottled (zebra lines) enhancement pattern of the spleen during the arterial phase distinguishes the medial (internal) lobe of the spleen and differentiates it from the adjacent tail of the pancreas and upper left kidney.