Preoperative investigations will include hemogram, liver function tests, serum electrolytes, serum amylase, serum lipase, kidney function tests, chest X-ray and electrocardiogram. Ultrasound of the abdomen, and contrast enhanced computer tomography (CECT) will be done for proper localization, size, wall characteristics, presence or absence of pseudoaneurysm and relationship of the cyst with the surrounding structures. Magnetic Resonance Imaging (MRI) will be done to asses the relative amount of necrotic debris within the cyst, if required. An Endoscopic ultrasound will be done at the discretion of the gastroenterologist for planning endoscopic drainage of the pseudocyst.