Table 1.

Characteristics of the male and female breast cancer cohorts

Feature	Male	Female
N	132	289
Median age, years (range)	66 (31–87)	61 (30–89)
Family history of breast carcinoma	14.4%	None*
Histological diagnosis
Invasive breast carcinomas of no special type	93.1%	87.4%
Papillary, mucinous and lobular types	4.5%	4.9%
In situ carcinoma
	3.8%	7.7%

*All female cases are sporadic