Table 3 .

Clinical and radiological features and excision diagnosis after core biopsy diagnosis of fibroadenoma

Radiological or clinical feature	Excision specimen diagnosis		χ2 with Yates’ correctiona
	Fibroadenoma, tubular adenoma, hamartoma	Phyllodes tumour
Size up to 30mm	47	1	χ2=3.5
>30mm	55	9	p=0.06
Size up to 40mm	86	5	χ2=5
>40mm	16	5	p=0.03
Age up to 25 years	15	1	χ2=0.0005
>25 years	80	9	p=0.98
Age up to 30 years	37	1	χ2=1.8
>30 years	65	9	p=0.19
Age up to 40 years	69	2	χ2=7
>40 years	33	8	p=0.008
Radiological growth	23	3	χ2=0.02
No growth	79	7	p=0.89
Growth >15%/month	10	2	χ2=0.2
<15%/month	92	8	p=0.65
Growth >10%/month	17	3	χ2=0.4
<10%/month	85	7	p=0.53
Radiological suspicion	12	6	χ2=12
No suspicion	90	4	p=0.0004

^aStatistical comparison of the frequency of these features in phyllodes tumours compared with other fibroepithelial lesions was made with chi squared with Yates’ correction.