CDH1 and breast lobular carcinoma: Although our tumors did mostly stain for E-cadherin as well, we do not think our tumors represent tubulolobular carcinomas as "this histologic pattern is distinct from other mixed ductal/lobular carcinomas in which the invasive components are often separate and the tubular component lacks a lobular growth pattern." Additionally, morphologically, our cases did not meet the diagnostic criteria for tubulolobular carcinoma due to a lack of any tubular elements.