Fig. 3From: Sternal closure with sandwiched three-piece bioresorbable mesh reduces postoperative hemorrhage: a retrospective studyGrade of substernal hematoma. A) Substernal hematoma is not present on CT. B) Slight substernal hematoma is seen on CT. C) Substernal hematoma equal to or larger than the size of the sternum, up to twice the size. D) Substernal hematoma larger than twice the size of the sternum. CT, computed tomographyBack to article page