Table 2.

Histopathological and immunohistochemical findings

Case	Atypical poroid cell	Duct formation	Intra-epidermal lesion	Poroma-like components	Vascular invasion	Depth of invasion, mm	Mitoses, n/10 HPF	Growth pattern	Immunohistochemistry
									CAM5.2	EMA	CEA
1	+	+	+	–	–	2.2	1.8	infiltrative	–	+	+
2	+	+	–	–	–	5.7	0.6	pushing	+	+	+
3	+	+	–	+	–	9.3	0.9	pushing	–	+	+
4	+	+	–	–	+	8.0	12.3	infiltrative	+	+	+
5	+	+	–	–	–	5.9	4.4	pushing	–	+	+
6	+	+	–	–	–	13.6	1.3	infiltrative	+	+	+
7	+	+	–	–	–	20.0	8.7	infiltrative	+	+	–
8	+	+	–	+	–	0.7	2.8	infiltrative	+	+	–