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Table 1 Immunohistochemical staining reaction for MMP-13 in normal cartilage and chondrocarcomas.

From: Is collagenase-3 (MMP-13) expression in chondrosarcoma of the jaws a true marker for tumor aggressiveness?

Samples

No of cases

Intensity of staining

Percentage of positive cells (%)

  

Negative -

Mild +

Moderate ++

Intense +++

 

Normal cartilage

2

2 (100%)

-

-

-

-

GI chondrosarcoma

4

3 (75%)

1 (25%)

-

-

0 %–4.2 %

GII chondrosarcoma

5

-

-

2 (40%)

3 (60%)

15.4%–30.8%

GIII chondrosarcoma

2

-

-

-

2 (100%)

37.6%–40.2%

  1. (-) Negative : 100% of cells negative.
  2. (+) Mild : 0% – < 25% of cells positive.
  3. (++) Moderate : 25% – >50% of cells positive.
  4. (+++) Intense : 75% – 100% of cells positive
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Diagnostic Pathology

ISSN: 1746-1596

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