<prompt> The Most common complication following splenectomy isLeft lower lobe atelectasisWound dehiscencePneumococcal septicemiaDeep vein thrombosis  <response>: A Left lower lobe atelectasis Postoperative Complications after Splenectomy: Immediate complications specific to splenectomy include haemorrhage resulting from a slipped ligature from the splenic artery. Haematemesis from gastric mucosal damage and gastric dilatation are uncommon. Left basal atelectasis is common and a pleural effusion may be present. Adjacent structures at risk during the procedure include the stomach and pancreas. A fistula may result from damage to the greater curvature of the stomach during ligation of the short gastric vessels. Damage to the tail of the pancreas may result in pancreatitis, a localized abscess or a pancreatic fistula. The blood platelet count may rise, and if this exceeds one million per milli litre prophylactic aspirin is recommended to prevent axillary or other venous thrombosis. Post-splenectomy septicaemia may result from Streptococcus pneumonia, Neisseria meningitides, Haemophilus influenzae and Escherichia coli. Opportunist Post-Splenectomy Infection OPSI is a major concern. The benefit of prophylactic antibiotics in this setting is controversial. 