Diagnostic Imaging: Gastrointestinal

SECTION 1: ABDOMINAL MANIFESTATIONS OF SYSTEMIC CONDITIONS
Introduction and Overview
Imaging Approach to Abdominal Manifestations of Systemic Conditions
Infection
HIV/AIDS
Tuberculosis
Mononucleosis
Metabolic or Inherited
Cystic Fibrosis
Sickle Cell Anemia
Amyloidosis
Sarcoidosis
Vascular Disorders
Systemic Hypotension
Superior Vena Cava Obstruction
Vasculitis
Trauma
Foreign Bodies
Barotrauma
Transplantation
Posttransplant Lymphoproliferative Disorder
Malignant Neoplasms
Leukemia and Lymphoma
Approach to Incidental Lymph Nodes on CT/MR: Summary of 2013 ACR Consensus Statement
Metastatic Melanoma
Kaposi Sarcoma
Treatment Response Assessment

SECTION 2: PERITONEUM, MESENTERY, AND ABDOMINAL WALL
Imaging Approach to Peritoneum, Mesentery, and Abdominal Wall
Abdominal Abscess
Inflammation
Peritonitis
Sclerosing Mesenteritis
Degenerative
Ascites
Omental Infarct
External Hernias
Inguinal Hernia
Femoral Hernia
Obturator Hernia
Ventral Hernia
Spigelian Hernia
Lumbar Hernia
Umbilical Hernia
Internal Hernias
Paraduodenal Hernia
Transmesenteric Postoperative Hernia
Bochdalek Hernia
Morgagni Hernia
Portal Hypertension and Varices
Visceral Aneurysms and Pseudoaneurysms
Traumatic Abdominal Wall Hernia
Traumatic Diaphragmatic Rupture
Treatment Related
Postoperative State, Abdomen
Abdominal Incision and Injection Sites
Peritoneal Inclusion Cyst
Benign Neoplasms
Lymphangioma (Mesenteric Cyst)
Desmoid
Abdominal Mesothelioma
Peritoneal Metastases
Pseudomyxoma Peritonei
Miscellaneous
Eventration and Paralysis of Diaphragm
Vicarious Excretion

SECTION 3: ESOPHAGUS
Imaging Approach to Esophagus
Candida Esophagitis
Viral Esophagitis
Chagas Disease
Reflux Esophagitis
Barrett Esophagus
Caustic Esophagitis
Drug-Induced Esophagitis
Radiation Esophagitis
Eosinophilic Esophagitis
Epidermolysis and Pemphigoid
Esophageal Webs
Cricopharyngeal Achalasia
Esophageal Achalasia
Esophageal Motility Disturbances
Esophageal Scleroderma
Schatzki Ring
Hiatal Hernia
Esophageal Varices
Esophageal Diverticula
Zenker Diverticulum
Intramural Pseudodiverticulosis
Traction Diverticulum
Pulsion Diverticulum
Esophageal Foreign Body
Esophageal Perforation
Boerhaave Syndrome
Esophagectomy: Ivor Lewis and Other Procedures
Intramural Benign Esophageal Tumors
Fibrovascular Polyp
Esophageal Inflammatory Polyp
Esophageal Carcinoma
Esophageal Metastases and Lymphoma

SECTION 4: STOMACH
Imaging Approach to Stomach
Congenital
Gastric Diverticulum
Gastritis
Gastric Ulcer
Zollinger-Ellison Syndrome
Ménétrier Disease
Caustic Gastroduodenal Injury
Gastroparesis
Gastric Bezoar
Gastric Volvulus
Iatrogenic Injury: Feeding Tubes
Partial Gastrectomy: Billroth Procedures
Fundoplication Complications
Imaging of Bariatric Surgery
Gastric Polyps
Intramural Benign Gastric Tumors
Gastrointestinal Stromal Tumor (GIST)
Gastric Carcinoma
Gastric Metastases and Lymphoma

SECTION 5: DUODENUM
Imaging Approach to Duodenum
Normal Variants and Artifacts
Duodenal Flexure Pseudotumor
Prominent Duodenal Ampulla Mimicking Mass
Duodenal Diverticulum
Duodenitis
Duodenal Ulcer
Brunner Gland Hyperplasia
SMA Syndrome
Gastroduodenal Trauma
Aortoenteric Fistula
Duodenal Polyps
Duodenal Carcinoma
Duodenal Metastases and Lymphoma

SECTION 6: SMALL INTESTINE
Imaging Approach to Small Intestine
Malrotation
Duplication Cyst
Small Bowel Diverticula
Meckel Diverticulum
Mesenteric Adenitis and Enteritis
Intestinal Parasites and Infestation
Opportunistic Intestinal Infections
Celiac-Sprue Disease
Whipple Disease
Mastocytosis
Crohn Disease
Intestinal Scleroderma
Intestinal (Angioneurotic) Angioedema
Small Bowel NSAID Stricture
Intestinal Lymphangiectasia
Ileus
Small Bowel Obstruction
Pneumatosis of Intestine
Intussusception
Malabsorption Conditions
Gallstone Ileus
Enteric and Perianal Fistulae and Sinus Tracts
Ischemic Enteritis
Mesenteric and Small Bowel Trauma
Postoperative State, Bowel
Radiation Enteritis and Colitis
Small Intestine Transplantation
Intramural (Mesenchymal) Intestinal Tumors
Ileocecal Valve Lipoma and Lipomatous Infiltration
Hamartomatous Polyposis Syndromes
Carcinoid Tumor
Small Bowel Carcinoma
Intestinal Metastases and Lymphoma
Intestinal GIST

SECTION 7: COLON
Imaging Approach to Colon
Infectious Colitis
Neutropenic Colitis (Typhlitis)
Inflammation and Ischemia
Ulcerative Colitis
Toxic Megacolon
Ischemic Colitis
Appendicitis
Mucocele of Appendix
Colonic Diverticulosis
Diverticulitis
Epiploic Appendagitis
Sigmoid Volvulus
Cecal Volvulus
Colonic Ileus and Ogilvie Syndrome
Fecal Impaction and Stercoral Ulceration
Rectal Prolapse and Intussusception
Colorectal Trauma
Tailgut Cyst
Colonic Polyps
Summary of C-RADS for CT Colonography
Villous Adenoma
Colon Carcinoma
Rectal Carcinoma
Familial Adenomatous Polyposis
Appendiceal Tumors
Colonic Metastases and Lymphoma

SECTION 8: SPLEEN
Imaging Approach to Spleen
Accessory Spleen
Asplenia and Polysplenia
Splenic Infection and Abscess
Splenomegaly and Hypersplenism
Splenic Infarction
Splenic Trauma
Splenosis
Splenic Cyst
Primary Splenic Tumors
Splenic Metastases and Lymphoma
Approach to Management of Incidental Splenic Lesions: Summary of 2013 ACR Consensus Statement

SECTION 9: LIVER
Imaging Approach to Liver
Congenital Hepatic Fibrosis
AD Polycystic Liver Disease
Variant Vascular and Biliary Anatomy of Liver
Hepatic Pyogenic Abscess
Hepatic TB and Fungal Infections
Hepatic Amebic Abscess
Hepatic Hydatid Cyst
Hepatic Schistosomiasis
Viral Hepatitis
Alcoholic Liver Disease
Autoimmune Hepatitis
Steatosis and Steatohepatitis
Hepatic Injury from Toxins
Cirrhosis
Primary Biliary Cholangitis
Focal Confluent Fibrosis
Nodular Regenerative Hyperplasia
Regenerative and Dysplastic Nodules
Solitary Necrotic Nodule
Peribiliary Cysts
Glycogen Storage Disease
Hemochromatosis
Wilson Disease
Hepatomegaly
Transient Hepatic Attenuation or Intensity Difference (THADs and THIDs)
Arterioportal Shunt
Portal Vein Occlusion
Passive Hepatic Congestion
Budd-Chiari Syndrome
Venoocclusive Disease
Infarction

738 Peliosis Hepatis
Hereditary Hemorrhagic Telangiectasia
HELLP Syndrome
Hepatic Trauma
Radiation-Induced Liver Disease
Postoperative Changes, Liver
Transjugular Intrahepatic Portosystemic Shunt (TIPS)
Hepatic Transplantation
Benign Neoplasms and Tumor-Like Conditions
Hepatic Cyst
Hepatic Cavernous Hemangioma
Focal Nodular Hyperplasia
Hepatic Adenoma
Biliary Hamartoma
Hepatic Angiomyolipoma
Hepatic Inflammatory Pseudotumor
Summary of CT/MR LI-RADS 2018
Hepatocellular Carcinoma
Fibrolamellar Carcinoma
Epithelioid Hemangioendothelioma
Biliary Cystadenocarcinoma
Hepatic Angiosarcoma
Undifferentiated Sarcoma
Hepatic Metastases and Lymphoma
Management of Incidental Liver Lesions

SECTION 10: BILIARY SYSTEM
Imaging Approach to Biliary System
Biliary Normal Variants and Artifacts
Congenital Abnormalities of Gallbladder
Caroli Disease
Choledochal Cyst
Recurrent Pyogenic Cholangitis
Ascending Cholangitis
Pancreatobiliary Parasites
AIDS Cholangiopathy
Gallbladder Hydrops and Empyema
Gallstones and Sludge
Acute Calculous Cholecystitis
Acalculous Cholecystitis
Xanthogranulomatous Cholecystitis
Emphysematous Cholecystitis
Mirizzi Syndrome
Hyperplastic Cholecystoses
Porcelain Gallbladder
Milk of Calcium Bile
Autoimmune (IgG4) Cholangitis
Primary Sclerosing Cholangitis
Biloma
Ischemic Bile Duct Injury
Biliary Trauma
Chemotherapy-Induced Cholangitis
Imaging of Postoperative Biliary Tree
Gallbladder Polyps
Management of Incidental Gallbladder and Biliary Findings: Summary of Consensus Statements
Gallbladder Carcinoma
Ampullary Carcinoma
Biliary Metastases and Lymphoma
Biliary Papillomatosis
Biliary IPMN

SECTION 11: PANCREAS
Imaging Approach to Pancreas
Agenesis of Dorsal Pancreas
Annular Pancreas
Pancreas Divisum
Asymmetric Fatty Lobulation of Pancreas
Ectopic Pancreatic Tissue
Acute Pancreatitis and Complications
Chronic Pancreatitis
Groove Pancreatitis
Autoimmune (IgG4) Pancreatitis
Pancreatic Lipomatous Pseudohypertrophy
Pancreatic Trauma
Imaging of Postoperative Pancreas
Pancreatic Transplantation
Pancreatic Serous Cystadenoma
Nonneoplastic Pancreatic Cysts
Management of Pancreatic Cysts
Pancreatic Ductal Carcinoma
Mucinous Cystic Pancreatic Tumor
Pancreatic IPMN
Pancreatic Neuroendocrine Tumors
Pancreatic Solid and Pseudopapillary Neoplasm
Pancreatic Metastases and Lymphoma
Atypical and Rare Pancreatic Tumors