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{{#ifeq: {{{lobular}}} |yes|By definition, tubule formation in classic invasive lobular carcinoma is scored as 3.<ref>{{cite web|url=http://surgpathcriteria.stanford.edu/breast/inflobcabr/grading.html|title=Infiltrating Lobular Carcinoma of the Breast|website=Stanford Medicine|accessdate=2021-01-06}}</ref>|[[File:Tubule formation score in the Nottingham system.jpg|thumb|500px|Tubule formation score in the Nottingham system]]The overall appearance of the tumor is considered.<ref name="PujaniSharma2014">{{cite journal|last1=Pujani|first1=Mukta|last2=Sharma|first2=KiranLata|last3=Srivastava|first3=AN|last4=Singh|first4=US|last5=Bansal|first5=Cherry|title=Grading systems in the cytological diagnosis of breast cancer: A review|journal=Journal of Cancer Research and Therapeutics|volume=10|issue=4|year=2014|pages=839|issn=0973-1482|doi=10.4103/0973-1482.140979}}</ref>* 1 point: tubular formation in more than 75% of the tumor (it may in addition be termed "majority of tumor")* 2 points: tubular formation in 10 to 75% of the tumor ("moderate")* 3 points: tubular formation in less than 10% of the tumor ("little or none")}}