Table 2.

Comparison of grades of baseline tumours, their axillary metastases and consecutive recurrences

	Pr→R1	Pr→Ax	R1→R2	R2→R3	R3→R4	R4→R5	R5→R6	Baseline→Last R
G1→G1	5 (56%; 31; 12–103)	2 (50%)	1 (25%; 15)	1 (100%; 40)	1 (100%; 16)	0	0	2 (22%; 78; 12–143)
G1→G2	3 (33%; 95; 44–200)	1 (25%)	3 (75%; 8; 0–77)	0	0	1 (100%; 39)	0	5 (56%; 104; 28–200)
G1→G3	1 (11%; 168)	1 (25%)	0	0	0	0	0	2 (22%; 145; 122–168)
G2→G1	0	0	0	1 (17%; 18)	0	0	0	0
G2→G2	14 (64%; 49; 4–100)	9 (75%)	5 (100%; 17; 7–54)	2 (33%; 0)	0	1 (100%; 0)	0	15 (63%; 47; 4–100)
G2→G3	8 (36%; 36; 19–122)	3 (25%)	0	3 (50%; 7; 6–24)	0	0	0	9 (37%; 36; 19–122)
G3→G1	0	0	0	0	0	0	0	0
G3→G2	5 (11%; 20; 9–77)	3 (11%)	1 (8%; 4)	0	1 (20%; 0)	0	0	6 (12%; 25; 9–77)
G3→G3	42 (89%; 23; 4–230)	24 (89%)	12 (92%; 13; 1–64)	6 (100%; 7; 0–19)	4 (80%; 14; 8–19)	1 (100%; 5)	1 (100%; 28)	45 (88%; 28; 4–230)

The first values are the absolute numbers of tumours exhibiting the given grades. The figures in parentheses are the percentages of the total number of tumours with the same initial grade, followed by the times to recurrence, in months (median; range).

Ax, axillary metastasis; G, grade; Last R, last recurrence; Pr, primary tumour; R1–6, first to sixth recurrence.