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The RIPASA score is a useful tool to aid in the diagnosis of acute appendicitis in the Irish population. A score of ≥7.5 provides sensitivity and specificity exceeding that previously documented for the Alvarado score in Western populations. WHAT DOES THIS PAPER ADD TO THE LITERATURE?: This is the first study evaluating the utility of the RIPASA score in predicting acute appendicitis in a Western population. At a value of 7.5, a cut-off score suggestive of appendicitis in the Eastern population, RIPASA demonstrated a high-sensitivity, specificity, positive predictive value and diagnostic accuracy in our cohort and was more accurate than the commonly used Alvarado score.

Segmental duodenal resection is a safe and effective surgical technique for the resection of primary duodenal tumours.

Pancreaticoduodenectomy is a complex, high-risk surgical procedure performed for tumours of the pancreatic head and other periampullary structures. The rate of perioperative mortality has decreased in the past number of years but perioperative morbidity remains high. This pictorial review illustrates expected findings in early and late post-operative periods, including mimickers of pathology. It aims to familiarize radiologists with the imaging appearances of common and unusual post-operative complications. These are classified into early non-vascular complications such as delayed gastric emptying, post-operative collections, pancreatic fistulae and bilomas; late non-vascular complications, for example, biliary strictures and hepatic abscesses; and vascular complications including haemorrhage and ischaemia. Options for minimally invasive image-guided management of vascular and non-vascular complications are discussed. Familiarity with normal anatomic findings is essential in order to distinguish expected post-operative change from surgical complications or recurrent disease. This review summarizes the normal and abnormal radiological findings following pancreaticoduodenectomy.Pancreaticoduodenectomy was first performed in 1909 and was popularized by the American surgeon Allen Whipple, who refined the technique in the 1930s. Indications for the procedure include pancreatic head tumours, periampullary tumours, distal common bile duct tumours and chronic pancreatitis involving the pancreatic head. The mortality rate of the procedure has decreased from .20% to ,2% in high volume centres, making it a more attractive option now than it previously was. 1 However, perioperative morbidity rates remain high (30-40%). Many patients require post-operative imaging and radiologic intervention. Timely recognition of complications is important. EXPECTED POST-OPERATIVE FINDINGS AND MIMICKERS OF PATHOLOGYUnderstanding the surgical procedure and the expected postoperative findings is essential when interpreting imaging. The components of a standard pancreaticoduodenectomy are distal gastrectomy, duodenectomy, partial pancreatectomy, partial choledochectomy, cholecystectomy and proximal jejunectomy. A jejunal loop is mobilized up to the right upper quadrant and three anastomoses are formed: gastrojejunostomy, hepaticojejunostomy and pancreaticojejunostomy (Figure 1). Distal gastrectomy facilitates resection of nodes along the greater and lesser curves of the stomach, reduces delayed gastric emptying and theoretically reduces the risk of gastritis post-operatively.Pylorus-preserving pancreaticoduodenectomy, first described in 1944, 2 has gained popularity in the past two decades. It involves preservation of the stomach and proximal duodenum and formation of a duodenojejunostomy (Figure 1). There is debate in the literature regarding the advantage of pylorus-preserving pancreaticoduodenectomy compared with standard pancreaticoduodenectomy. Preservation of the distal stomach results in reduced frequency of dumping syndrome and...

Our study shows that the mean age group at risk for colorectal cancer is 65 years (range 54-75). Still, 33 % of patients present to acute surgical assessment units with advanced disease. Though we did well in terms of operative resections, follow-up still remains a challenge.

Iatrogenic diaphragmatic hernias can occur after abdominal or thoracic surgery. Acute presentation of a diaphragmatic hernia varies depending on the extent and nature of the organ which has herniated. The initial diagnosis can be challenging due to the nonspecific nature of the presenting symptoms. Delay in diagnosis poses a significant risk to the patient, and a rapid deterioration can occur in the context of strangulation. We outline two cases of acute gastric herniation through a defect in the diaphragm after an open and a laparoscopic nephrectomy. Both had characteristic findings on imaging, required emergency, surgery and had a successful outcome. Both cases highlight the potential for late presentation with non-specific symptoms and the necessity for urgent surgical management where gastric perfusion is compromised.

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