Age group

Lipid pigment cortex

Lipid pigment medulla

Hemosiderin cortex

Hemosiderin medulla

Calcium deposition medulla

≤10 kg (21)

18 (86%)

9 (43%)

4 (19%)

2 (10%)

3 (14%)

10 - 20 kg (14)

12 (86%)

4 (29%)

4 (29%)

2 (14%)

2 (14%)

≤20 kg (35)

30 (86%)

13 (37%)

8 (23%)

4 (11%)

5 (14%)

>20 kg (61)

58 (95%)

4 (7%)

7 (11%)

6 (10%)

2 (3%)