Table 2 Micropapillary pattern ratio and definition of micropapillary pattern-positive and micropapillary pattern-negative cases

From: A micropapillary pattern is predictive of a poor prognosis in lung adenocarcinoma, and reduced surfactant apoprotein A expression in the micropapillary pattern is an excellent indicator of a poor prognosis

Micropapillary pattern ratio

No. of cases

Micropapillary pattern status

0%

132

Negative group (n=164)

<1%

32

 

≥1–<5%

15

Positive group (n=21)

≥5%

6

 
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