Table 1. Characteristics of all patients and those receiving breast-conserving surgery (BCS).

	All patients	Patients receiving BCS
	Number	Number	%
Tumour location
Central	878	239	27.2
Medial	2788	1260	45.2
Lateral	6708	2950	44.0
Overlapping	3158	1128	35.7
Tumour size
T1A/B	2023	1178	58.2
T1C	5766	2878	49.9
T2	5743	1521	26.5
Age (years)
<50	3473	1718	49.5
50–69	6645	3079	46.3
70–74	1450	478	33.0
75+	1964	302	15.4
Total number of patients treated per hospital
Average	712	293	41.2
Range	222–2231	63–793	21.5–60.8
Distance from radiotherapy department (km)
0–9.9	2439	1111	45.6
10–24.9	2681	1149	42.9
25–44.9	5470	2266	41.4
45+	2896	1025	35.4
Year of diagnosis
1989–1991	2145	769	35.9
1992–1994	2667	897	33.6
1995–1997	2951	1049	35.5
1998–2000	3265	1531	46.9
2001–2002	2504	1331	53.2
Mode of detection
Screen detected	3327	1830	55.0
Non-screen detected	10 205	3747	36.7
Histology
Ductal carcinoma	11 484	4943	43.0
Lobular carcinomaa	1429	430	30.1
Otherb	617	203	32.9

^aIncluding mixed lobular and ductal carcinoma.

^bMucinous, medullary, unspecified.