RT Journal T1 NOt available JF Archives of Surgery JO Archives of Surgery YR 1999 FD June 1 VO 134 IS 6 SP 679 OP 679 DO 10.1001/archsurg.134.6.679 UL http://dx.doi.org/10.1001/archsurg.134.6.679 AB The meandering artery of Gonzalez is a proximal collateral arterial arcade of the colon that shadows and is proximal and medial to the marginal artery. The space of Riolan is an avascular area in the mesentery to the left of the mid-colic artery. Sudeck's Point is a watershed between the superior hemorrhoidal artery and the middle hemorrhoidal artery.1