Description

Stevens et al developed a semi-automated method for histologic grading of invasive lobular carcinomas (ILC). The authors are from the University of Kansas.


 

Parameters:

(1) nuclear grade (N)

(2) Ki-67 staining proliferation index (P)

 

Parameter

Finding

Points

nuclear grade

small nuclei that are regular and uniform with little variation

1

 

nuclei of moderate size and variation

2

 

nuclei showing marked nuclear variability in size and shape

3

Ki-67 (MIB-1) staining

<= 9%

1

 

10 to 25%

2

 

> 25%

3

 

 

Nuclear Grade

Ki-67 Staining

Grade

1 or 2

1 or 2

1

1 or 2

3

2

3

1 or 2

2

3

3

3

 

The N+P grade correlates with the patient's overall survival.

 


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