Secretory breast carcinoma with a papillary-predominant pattern: an unusual morphological variant.

Our study indicated that besides typical growth patterns (microcystic, solid and tubular), secretory carcinoma could also present with a papillary-predominant architecture. These cases should be differentiated from other breast tumours with a papillary pattern. It may have clinical significance to recognize this uncommon morphology variant of secretory carcinoma in routine practice.