Fig. 1
From: Surgical management of ostomy complications: a MISSTO–WSES mapping review
Stomal varices. Stomal varices classification revised from Saad’s article [91]. Type-a is non-occlusive and is pressure driven (oncotic), usually with some element of portosystemic collaterals (type-a2 and -a3) to decompress the higher portal pressure. A: parastomal varices. B: Afferent portal branch vein. C: Efferent systemic vein. PV portal vein. IFV ilio-femoral branch vein