Table 4. Claudin-4 staining.

Patient	Claudin-4 positivity
NEC 1	1+
NEC 2	1+
NEC 3	1+
NEC 4	1+
NEC 5	1+
USPC 1	3+
USPC 2	3+
USPC 3	3+
USPC 4	2+
USPC 5	3+
USPC 6	2+
USPC 7	3+
USPC 8	1+
USPC 9	3+
USPC 10	3+
USPC 11	3+
USPC 12	3+
USPC 13	1+
USPC 14	2+
USPC 15	3+
USPC 16	2+
USPC 17	3+
USPC 18	2+