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Table 6 Availability of slides/blocks from tissue archives of rare tumors. Summary of the availability of slides and blocks retrieved from all SPIN sites with a breakdown of the number of blocks with presence of tumor for cases in the rare tumor type category.

From: Availability and quality of paraffin blocks identified in pathology archives: A multi-institutional study by the Shared Pathology Informatics Network (SPIN)

Quantity

# of cases found on search: slides available by path report

# of cases found on search: slides found in archive

# of cases found on search: blocks available by path report

# of cases found on search: all blocks found in archive

# of cases found on search: Blocks w/Tumor found in archive

n/a*

114

18

42

18

95

0

0

71

16

80

41

1 – 3

78

81

114

109

146

4 – 6

34

43

50

44

41

7 – 9

21

25

34

30

27

10 – 14

37

56

58

49

41

15 – 19

45

35

42

38

8

20 – 29

42

43

30

23

1

30 – 39

17

18

12

8

0

>40

12

10

2

1

0

 

400

400

400

400

400

  1. n/a * = not available, blocks only, no tumor seen