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Table 1: Diagnostic evaluation summary
Subject No. Age (yr)/Sex Primary MR Imaging PCR CSF PCR Serum PCR GI GI Biopsy (PAS)
1 54/M CNS + + + NP –
2 59/M CNS (asxs GI) + + – + –
3 38/M GI→CNS + + – NP +
4 40/M GI→CNS + – – + +
5 40/M GI→CNS – + NP + –
6 52/M GI→CNS – + – – +
7 63/M GI→CNS – + – – +
Note:—+ indicates positive result; –, negative result.

Subject No.	Age (yr)/Sex	Primary	MR Imaging	PCR CSF	PCR Serum	PCR GI	GI Biopsy (PAS)
1	54/M	CNS	+	+	+	NP	–
2	59/M	CNS (asxs GI)	+	+	–	+	–
3	38/M	GI→CNS	+	+	–	NP	+
4	40/M	GI→CNS	+	–	–	+	+
5	40/M	GI→CNS	–	+	NP	+	–
6	52/M	GI→CNS	–	+	–	–	+
7	63/M	GI→CNS	–	+	–	–	+