Table 1.

Frequency of masses with different shape and margin

Mass margin	Mass shape				Total
	Round	Oval	Lobular	Irregular
Circumscribed	18	26	30	1	75
Obscured	5	12	4	–	21
Microlobulated	2	5	6	2	15
Ill-defined	4	15	9	16	44
Spiculated	7	4	2	32	45
Total	36	62	51	51	200