Table:
Number of LNM	Under the ICBN	Above the ICBN	Patients
1	+	-	16
2	+	-	31
3	+	-	9
+	+	2
4	+	+	1

Render the figure in Markdown format.

| Number of LNM | Under the ICBN | Above the ICBN | Patients | 
 | --- | --- | --- | --- | 
 | 1 | + | - | 16 | 
 | 2 | + | - | 31 | 
 | <ROWSPAN=2> 3 | + | - | 9 | 
 | + | + | 2 | 
 | 4 | + | + | 1 |