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Survey on diagnostic criteria for invasive lobular carcinoma (ILC)
General info
1.
In which country do you practice pathology?
2.
What is you field of interest in pathology?
Surgical pathology without specialization
Specialized breast pathology
Other
3.
In which center do you perform your activities:
Small community hospital
Private laboratory
University Hospital
Large tertiary hospital
4.
What is the average volume/year of breast cancer samples in your center?
0-150 samples
151-300 samples
301-500 samples
>500 samples
5.
How many pathologists handle breast cancer specimens in your laboratory
1
1-4
5 or more
6.
Do you perform consensus diagnosis for difficult cases in your center?
Yes, sometimes
Yes, regularly
No
7.
Are you aware of national/international guidelines recommending the use of IHC for the diagnosis of ILC?
Yes
No
I do not know
8.
How do you diagnose an invasive lobular carcinoma?
Only by morphology
Systematically by morphology and IHC
I use IHC only in case of doubt
I use IHC only in case of in situ lesions to differentiate lobular carcinoma in situ from ductal carcinoma in situ
9.
Which subtypes of ILC do you report? (multiple options possible):
Classic
Non-classic
Mixed non-classic
Alveolar
Solid
Trabecular
Histiocytoid/Apocrine
Pleomorphic
Tubulo-lobular
Invasive carcinoma with mixed ductal and lobular features
Mucinous
All of the above
Other
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