Histiocytoid breast carcinoma: solid variant of invasive lobular carcinoma with decreased expression of both E-cadherin and CD44 epithelial variant.
Fujiwara M, Horiguchi M, Mori S, Yokoyama K, Horiguchi H, Fukazawa M, Fujiwara H, Yano Y, Satoh H, Kamma H. Pathol Int. 2005 Jun; 55(6):353-9.