Hope young or new pathologists can have a basic understanding to breast papillary lesions and obtain some diagnostic priniciples by attending the lectures and studying these cases. Imortant points include classifications of breast papillary lesions, diagnosis of atypical papilloma, EPC, SPC.

Some one please translates my diagnoses for the 34 cases. thanks, cz

 Thank all of you who read this topic. I especially appreciate 老山羊和亚梦to勇敢的写出你们的评估看法。It is difficult to make dx based on one or two phots on line. So it does not matter your comments are right or wrong.

重在参与。参入就应有收获。

 31.

 EPC

32

IDP

33

-Invasive ductal carcinoma

-EPC

34

-Focal invasive ductal ca

-EPC

 26.

Atypical papilloma

27

Atypical papilloma with collagenous spherulosis

rare case

28

Atypical papilloma

29.

-Invasive micropapillary ca with apocrine feature

-DCIS

30

DCIS, micropapillary patter

There is invasive micropapillary ca in other area in this case

 16.

EPC

17

IDP with UDH, apocrine change.

You can just call IDP

18.

 IDP with squamous metaplasia

You can just call IDP

19

IDP with necrosis

or  just call IDP

20

DCIS micropapillary pattern.

If this is the only lesion, it is fine to call ADH

21

SPC

22.

SPC with focal invasion

23.

DCIS, Papillary pattern or

Papillary DCIS

24

Invasive micropapillary ca with focal mucinous feature

25.

Invasive micropapillary ca and mucinous ca

or

Invasive carcinoma, mixed with micropapillary and mucinous types

 10. Atypical papilloma

11.

Atypical papilloma

12.

 Atypical papilloma

13.

-Atypical papilloma with microcalcifications

-Radial scar

14.

SPC with frank stromal invasion

or invadive ductal carcinoma arising from SPC

15.

Invasive ductal carcinoma (it is fine if you call IDC mixed with cribriform ca) arising with EPC

Or EPC with invasive ductal carcinoma

 1. Invasive micropapillary ca

2.. Atypical papilloma with microcalcification

3. Apocrine change. Benign

4. SPC

5. DCIS, micropapillary pattern

6. SPC

7. SPC with frank stromal invasion;

or invasive ductal carcinoma arising from SPC

8. SPC with frank stromal invasion

or invadive ductal carcinoma arising from SPC

9. dx is the same as above

Remember: The size of invasion should be measured based on the invasive component

 My Satursday talk included too many cases ans slides. I did not explain clearly for some cases. I wrote my dx for above 34 cases for your reference.

It is not easy to study pathology. Lectures can help you to get some dx priniciple. If you want to become a good pathologist you need to read many slides in your daily practice or study slides.   

 add two more cases

Case 33

名称：图1
描述：图1

 case 32 from huaxia web

IHC: P63, SMMHC

 case 31 from huaxia web

IHC P63, CK5/6