Figure 1: Possible combined growth patterns in breast carcinomas. Tumors with unifocal (d, e, f, g, p), multifocal (h, i, j, k), and diffuse (l, m, n, o, q) invasive component, and with unifocal (a, e, i, m, p), multifocal (b, f, j, n), and diffuse (c, g, k, o) in situcomponent are illustrated. Numbers in the lower left corner of the drawings indicate the number of cases in the series of 1,000 consecutive breast carcinomas belonging to that category (Reprinted from Ref. 2, open access publication).