Magnetic resonance imaging in size assessment of invasive breast carcinoma with an extensive intraductal component

Table 3 Size assessment of invasive breast carcinoma with an extensive DCIS component by mammography (n = 21) and MRI (n = 23) compared to histopathological size.

Radiological size assessment		Mammography N (%)	MRI N (%)
Underestimation	> 50 mm	4 (19)	3 (13)
	30–49 mm	1 (5)	1 (4)
	20–29 mm	4 (19)	1 (4)
	11–19 mm	4 (19)	2 (9)
Adequate measurement*		6 (28)	11 (48)
Overestimation	11–20 mm	1 (5)	3 (13)
	21–30 mm	1 (5)	2 (9)

* A difference of 10 mm or less between size assessed on imaging and size at histopathological examination is considered as an adequate measurement.

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