Imaging in Gastroenterology

Imaging Anatomy and Overview

COMMON SYMPTONS AND SIGNS: IMAGING APPROACH AND DIFFERENTIAL DIAGNOSIS

Abdominal Pain

Nausea and Vomiting

Small Bowel Obstruction and Ileus

Diarrhea

Constipation

Gastrointestinal (GI) Bleeding

Jaundice

DISORDERS AFFECTING MULTIPLE ORGANS: IMAGING APPROACH

Infectious, Inflammatory, and Degenerative

Abdominal Abscesses and Fistulas

HIV/AIDS

IgG4-Related Disease

Vasculitis

Sarcoidosis

Eosinophilic Gastroenteritis and Esophagitis

Scleroderma and Related Disorders

Cystic Fibrosis

Trauma and Foreign Bodies

Abdominal Trauma

Foreign Bodies

Barotrauma

Neoplasms

Leukemia and Lymphoma

GI Stromal Tumors

Neuroendocrine Tumors

ABDOMINAL WALL AND PERITONEAL CAVITY: IMAGING APPROACH AND DIFFERENTIAL DIAGNOSIS

Peritoneum, Mesentery, and Abdominal Wall: Imaging Approach and Differential DiagnosiS

Infectious, Inflammatory, and Degenerative

Peritonitis

Ascites

Inguinal Hernia

Femoral Hernia

Ventral Hernia

Umbilical Hernia

Obturator Hernia

Spigelian Hernia

Lumbar Hernia

Paraduodenal Hernia

Transmesenteric Hernia

Bochdalek Hernia

Morgagni Hernia

Mesenteritis

Benign Neoplasms and Tumor-Like Conditions

Lymphangioma (Mesenteric Cyst)

Desmoid

Malignant Neoplasms

Abdominal Mesothelioma

Peritoneal Metastases and Lymphoma

Pseudomyxoma Peritonei

ESOPHAGUS: IMAGING APPROACH AND DIFFERENTIAL DIAGNOSIS

Esophagus: Imaging Approach and Differential Diagnosis

Infectious, Inflammatory, and Degenerative

Candida Esophagitis

Viral Esophagitis

Chagas Disease

Reflux Esophagitis

Barrett Esophagus

Caustic Esophagitis

Drug-Induced Esophagitis

Radiation Esophagitis

Epidermolysis and Pemphigoid

Esophageal Webs

Schatzki Ring

Cricopharyngeal Achalasia

Achalasia

Esophageal Motility Disturbances

Zenker Diverticulum

Pulsion Diverticulum

Traction Diverticulum

Intramural Pseudodiverticulosis

Trauma

Esophageal Perforation

Boerhaave Syndrome

Treatment Related

Esophagectomy: Ivor Lewis and Other Procedures

Fundoplication and Other Antireflux Procedures

Benign Neoplasms and Tumor-Like Conditions

Intramural Benign Esophageal Tumors

Fibrovascular Polyp

Esophageal Inflammatory Polyp

Malignant Neoplasms

Esophageal Carcinoma

Esophageal Metastases and Lymphoma

STOMACH AND DUODENUM: IMAGING APPROACH AND DIFFERENTIAL DIAGNOSIS

Stomach: Imaging Approach and Differential Diagnosis

Embryology and Anomalies

Hypertrophic Pyloric Stenosis

Duodenal Stenosis or Atresia

Gastric Diverticulum

Duodenal Diverticulum

Infectious, Inflammatory, and Degenerative

Gastritis and Duodenitis

Duodenal Ulcer

Gastric Ulcer

Zollinger-Ellison Syndrome

Ménétrier Disease

Gastroparesis

Gastric Bezoar

Hiatal Hernia

Gastric Volvulus

Treatment Related

Iatrogenic Injury: Feeding Tubes

Partial Gastrectomy: Bilroth Procedures

Imaging of Bariatric Surgery

Benign Neoplasms and Tumor-Like Conditions

Gastric Polyps

Intramural Benign Gastric Tumors

Malignant Neoplasms

Gastric Carcinoma

Gastric Metastases and Lymphoma

SMALL INTESTINE: IMAGING APPROACH AND DIFFERENTIAL DIAGNOSIS

Small Intestine: Imaging Approach and Differential Diagnosis

Embryology and Anomalies

Malrotation

Duplication Cyst

Meckel Diverticulum

Infectious, Inflammatory, and Degenerative

Small Bowel Diverticula

Mesenteric Adenitis and Enteritis

Opportunistic Intestinal Infections

Intestinal Parasites and Infestation

Celiac Sprue Disease

Intestinal Lymphangiectasia

Whipple Disease

Mastocytosis

Crohn Disease

Intestinal (Angioneurotic) Angioedema

Small Bowel NSAID Stricture

Pneumatosis of the Intestine

Bowel Ischemia

Intussusception

Gallstone Ileus

Treatment Related

Postoperative State, Bowel

Radiation Enteritis and Colitis

Small Intestine Transplantation

Benign Neoplasms

Hamartomatous Polyposis Syndromes

Malignant Neoplasms

Small Bowel Carcinoma

Intestinal Metastases and Lymphoma

COLON: IMAGING APPROACH AND DIFFERENTIAL DIAGNOSIS

Colon: Imaging Approach and Differential Diagnosis

Infectious, Inflammatory, and Degenerative

Infectious Colitis

Neutropenic Colitis (Typhlitis)

Ulcerative Colitis

Toxic Megacolon

Ischemic Colitis

Appendicitis

Colonic Diverticulosis

Epiploic Appendagitis

Omental Infarct

Sigmoid Volvulus

Cecal Volvulus

Colonic Ileus and Ogilvie Syndrome

Trauma

Colorectal Trauma

Benign Neoplasms and Tumor-Like Conditions

Colonic Polyps

Villous Adenoma

Malignant Neoplasms

Colon Carcinoma

Rectal Carcinoma

Familial Polyposis and Gardner Syndrome

Appendiceal Tumors

Colonic Metastases and Lymphoma

LIVER: IMAGING APPROACH AND DIFFERENTIAL DIAGNOSIS

Liver: Imaging Approach and Differential Diagnosis

Emryology and Anomalies

Congenital Hepatic Fibrosis

Hepatic AD Polycystic Kidney Disease

Infectious, Inflammatory, and Degenerative

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

Nodular Regenerative Hyperplasia

Regenerative and Dysplastic Nodules

Glycogen Storage Disease

Hemochromatosis (Iron Overload Disorders)

Wilson Disease

Vascular Disorders

Arterioportal Shunt

Portal Vein Occlusion

Passive Hepatic Congestion

Budd-Chiari Syndrome

Venoocclusive Disease

Hepatic Infarction

Peliosis Hepatis

Hereditary Hemorrhagic Telangiectasia

Treatment Related

Transjugular Intrahepatic Portosystemic Shunt (TIPS)

Hepatic Transplantation

Benign Neoplasms and Tumor-Like Conditions

Hepatic Cyst

Hepatic Cavernous Hemangioma

Focal Nodular Hyperplasia

Hepatic Adenoma

Biliary Hamartomas

Hepatic Angiomyolipoma and Lipoma

Hepatic Inflammatory Pseudotumor

Malignant Neoplasms

Hepatocellular Carcinoma

Fibrolamellar Carcinoma

Peripheral (Intrahepatic) Cholangiocarcinoma

Epithelioid Hemangioendothelioma

Biliary Cystadenocarcinoma

Hepatic Angiosarcoma

Hepatic Metastases and Lymphoma

BILIARY SYSTEM: IMAGING APPROACH AND DIFFERENTIAL DIAGNOSIS

Biliary System: Imaging Approach and Differential Diagnosis

Embryology and Anomalies

Congenital Abnormalities of the Gallbladder

Caroli Disease

Choledochal Cyst

Infectious, Inflammatory, and Degenerative

Ascending Cholangitis

Primary Sclerosing Cholangitis

Recurrent Pyogenic Cholangitis

Pancreatobiliary Parasites

Gallstones and Sludge

Gallbladder Hydrops and Empyema

Gallbaldder Hydrops and Empyema

Acute Calculous Cholecystitis

Acalculous Cholecystitis

Emphysematous Cholecystitis

Xanthogranulomatous Cholecystitis

Mirizzi Syndrome

Hyperplastic Cholecystoses

Porcelain Gallbladder

Treatment Related

Chemotherapy-Induced Cholangitis

Benign Neoplasms and Tumor-Like Conditions

Gallbladder Polyps

Biliary Papillomatosis

Malignant Neoplasms

Gallbladder Carcinoma

Cholangiocarcinoma

Ampullary Carcinoma

Biliary IPMN

Biliary Metastases and Lymphoma

PANCREAS: IMAGING APPROACH AND DIFFERENTIAL DIAGNOSIS

Pancreas: Imaging Approach and Differential Diagnosis

Embryology and Anomalies

Agenesis of Dorsal Pancreas

Annular Pancreas

Pancreas Divisum

Ectopic Pancreatic Tissue

Infectious, Inflammatory, and Degenerative

Acute Pancreatitis and Complications

Chronic Pancreatitis

Groove Pancreatitis

Autoimmune (IgG4) Pancreatitis

Treatment Related

Postoperative Pancreas

Pancreatic Transplantation

Benign Neoplasms and Tumor-Like Conditions

Nonneoplastic Pancreatic Cysts

Pancreatic Serous Cystadenoma

Malignant Pancreatic Neoplasms

Pancreatic Ductal Carcinoma

Mucinous Cystic Pancreatic Tumor

Pancreatic IPMN

Pancreatic Solid and Pseudopapillary Epithelial Neoplasm

Pancreatic Metastases and Lymphoma

Atypical and Rare Pancreatic Tumors