Reply to the letter to the editor: A rare case of breast cancer showing distinct TTF‐1 nuclear expression: small‐cell carcinoma or not?. Issue 5 (20th January 2015) - Ni, Yun‐Bi; Tsang, Julia YS; Shao, Mu‐Min; Chan, Siu‐Ki; Tong, Joanna; To, Ka‐Fai; Tse, Gary M