Fig. 3From: Correlation between modified CT severity index and retroperitoneal extension using the interfascial planes in the grading of clinically suspected acute severe pancreatitisGrade II acute pancreatitis with modified CTSI ( mild score 4). a, b CT scan at the level of the kidney (a) and at a lower level (b) shows fluid collection spreading into the retromesenteric plane (white star) extending into the lateroconal plane (red arrow) and retro-renal plane (dotted blue arrow)Back to article page