Age group

Lipid cortex

Pigment cortex

Cholesterol cortex

Calcium cortex

Hemosiderin medulla

<0.5 y (28)

15 (0%)

1 (4%)

4 (14%)

5 (17%)

0 (%)

0.5 - 6 y (51)

44 (81%)

17 (33%)

30 (58%)

27 (52%)

0 (%)

7 - 13 y (29)

23 (98%)

26 (90%)

13 (44%)

10 (34%)

0 (%)

>13 y (25)

22 (100%)

24 (96%)

13 (52%)

14 (56%)

1 (4%)

Adult (17)

16 (94%)

7 (41%)

10 (58%)

5 (29%)

0 (0%)