4.12 Achalasia cardia. 4.1.3 Hiatal hemia. 4.1.4 Diaphragmatic hernia 4.2 Ulceration. 4.2.1 Benign 4.22 Malignant 4.3 Tumors 4.3.1 Benign 4.32 Malignant 4.4 Infection and inflammaion 4.4.1 Esophagitis 4.4.2 Gastritis 4.4.3 Colitis 4.4.4 Diverticulitis 4.5 Intussusception 5.Nomal imaging anatomy of the hepatobiliary system,pancreas and spleen 5.1 Utrasonography 5.2 Computed tomography. 5.3 Magnetic resonance imaging 6.Abnormal imaging findings in the common diseases of the hepatobiliary system,pancreas and spleen: 6.1 Inflammation 6.1.1 Acute and chronic cholecystitis 6.12 Liver abscess 6.1.3 Acute and chronic pancreatitis 6.14 Splenic abscess 6.2 Neoplasm 6.2.1 Hepatocellular carcinoma 622 Cholangiocarcinoma 623 Carcinma of the gallbladder 624 Carcinoma of the pancreas 62.5 Metastasis 6.2.6 Hemangioma 6.2.7 Liver cyst 12 12 4.1.2 Achalasia cardia. 4.1.3 Hiatal hernia. 4.1.4 Diaphragm atic hernia 4.2 Ulceration. 4.2.1 Benign 4.2.2 Malignant 4.3 Tumors 4.3.1 Benign 4.3.2 Malignant 4.4 Infection and inflamma tion 4.4.1 Esophagitis 4.4.2 Gastritis 4.4.3 Colitis 4.4.4 Diverticulitis 4.5 Intussusception 5. Normal imaging anatomy of the hepatobiliary system , pancreas and spleen. 5.1 Ultrasonography. 5.2 Computed tomography. 5.3 Magnetic resonance imaging 6. Abnormal imaging findings in the common diseases of the hepatobiliary system, pancreas and spleen : 6.1 Inflamm ation 6.1.1 Acute and chronic cholecystitis 6.1.2 Liver abscess 6.1.3 Acute and chronic pancreatitis 6.1.4 Splenic abscess 6.2 Neoplasm 6.2.1 Hepatocellular carcinom a 6.2.2 Cholangiocarcinoma 6.2.3 Carcinoma of the gallbladder 6.2.4 Carcinoma of the pancreas 6.2.5 Metastasis 6.2.6 Hemangioma 6.2.7 Liver cyst