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Colonic Obstruction Mechanical large bowel obstruction is four to five times less common than small bowel obstruction and differs significantly in terms of cause ( Table 46.1 ), pathophysiology, therapy, and prognosis. Colon obstruction is most often the result of…

Gastric Varices Pathophysiology Portal Hypertension The gastric fundus is normally drained by numerous short gastric veins that anastomose distally with the splenic vein and proximally with the coronary vein and venous channels surrounding the distal esophagus. The short gastric veins…