Diagnostic Imaging: Gastrointestinal

Dr. Atif Zaheer has a specialty focus on CT, MR, and US of the abdomen and pelvis. He is Professor of Radiology, Oncology and Medicine at The Johns Hopkins University School of Medicine in Baltimore, Maryland. Dr. Siva Raman is a board-certified radiologist who gained his subspecialty expertise in thoracoabdominal imaging during a fellowship at Stanford University, and intern residency at UC Davis Medical Center. He attended Johns Hopkins University Medical School. Dr. Raman is a radiologist at Bay Imaging Consultants in Walnut Creek, California, with a subspecialty focus on thoracoabdominal imaging

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

Metastatic Melanoma

Kaposi Sarcoma

Treatment Response Assessment

Peritoneum, Mesentery, and Abdominal Wall

Introduction and Overview

Imaging Approach to the Peritoneum, Mesentery, and Abdominal Wall

Infection

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

Vascular Disorders

Portal Hypertension and Varices

Abnormalities of Mesenteric Vasculature

Trauma

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

Malignant Neoplasms

Abdominal Mesothelioma

Peritoneal Metastases

Pseudomyxoma Peritonei

Miscellaneous

Eventration and Paralysis of Diaphragm

Vicarious Excretion

Esophagus

Introduction and Overview

Imaging Approach to Esophagus

Infection

*Candida* Esophagitis

Viral Esophagitis

Chagas Disease

Inflammation

Reflux Esophagitis

Barrett Esophagus

Caustic Esophagitis

Drug-Induced Esophagitis

Radiation Esophagitis

Eosinophilic Esophagitis

Epidermolysis and Pemphigoid

Degenerative

Esophageal Webs

Cricopharyngeal Achalasia

Esophageal Achalasia

Esophageal Motility Disturbances

Esophageal Scleroderma

Schatzki Ring

Hiatal Hernia

Vascular Disorders

Esophageal Varices

Esophageal Diverticula

Zenker Diverticulum

Intramural Pseudodiverticulosis

Traction Diverticulum

Pulsion Diverticulum

Trauma

Esophageal Foreign Body

Esophageal Perforation

Boerhaave Syndrome

Treatment Related

Esophagectomy: Ivor Lewis and Other Procedures

Benign Neoplasms

Intramural Benign Esophageal Tumors

Fibrovascular Polyp

Esophageal Inflammatory Polyp

Malignant Neoplasms

Esophageal Carcinoma

Esophageal Metastases and Lymphoma

Stomach

Introduction and Overview

Imaging Approach to Stomach

Congenital

Gastric Diverticulum

Inflammation

Gastritis

Gastric Ulcer

Zollinger-Ellison Syndrome

Ménétrier Disease

Caustic Gastroduodenal Injury

Degenerative

Gastroparesis

Gastric Bezoar

Gastric Volvulus

Treatment Related

Iatrogenic Injury: Feeding Tubes

Partial Gastrectomy: Billroth Procedures

Fundoplication Complications

Imaging of Bariatric Surgery

Benign Neoplasms

Gastric Polyps

Intramural Benign Gastric Tumors

Malignant Neoplasms

Gastrointestinal Stromal Tumor (GIST)

Gastric Carcinoma

Gastric Metastases and Lymphoma

Duodenum

Introduction and Overview

Imaging Approach to Duodenum

Normal Variants and Artifacts

Duodenal Flexure Pseudotumor

Prominent Duodenal Ampulla Mimicking Mass

Congenital

Duodenal Diverticulum

Inflammation

Duodenitis

Duodenal Ulcer

Brunner Gland Hyperplasia

Vascular Disorders

SMA Syndrome

Trauma

Gastroduodenal Trauma

Treatment Related

Aortoenteric Fistula

Benign Neoplasms

Duodenal Polyps

Malignant Neoplasms

Duodenal Carcinoma

Duodenal Metastases and Lymphoma

Small Intestine

Introduction and Overview

Imaging Approach to Small Intestine

Congenital

Malrotation

Duplication Cyst

Small Bowel Diverticula

Meckel Diverticulum

Infection

Mesenteric Adenitis and Enteritis

Intestinal Parasites and Infestation

Opportunistic Intestinal Infections

Inflammation

Celiac-Sprue Disease

Whipple Disease

Mastocytosis

Crohn Disease

Intestinal Scleroderma

Intestinal (Angioneurotic) Angioedema

Small Bowel NSAID Stricture

Metabolic or Inherited

Intestinal Lymphangiectasia

Degenerative

Ileus

Small Bowel Obstruction

Pneumatosis of Intestine

Intussusception

Malabsorption Conditions

Gallstone Ileus

Enteric Fistulas and Sinus Tracts

Vascular Disorders

Ischemic Enteritis

Trauma

Mesenteric and Small Bowel Trauma

Treatment Related

Postoperative State, Bowel

Radiation Enteritis and Colitis

Transplantation

Small Intestine Transplantation

Benign Neoplasms

Intramural (Mesenchymal) Intestinal Tumors

Ileocecal Valve Lipoma and Lipomatous Infiltration

Hamartomatous Polyposis Syndromes

Malignant Neoplasms

Carcinoid Tumor

Small Bowel Carcinoma

Intestinal Metastases and Lymphoma

Intestinal GIST

Colon

Introduction and Overview

Imaging Approach to Colon

Infection

Infectious Colitis

Neutropenic Colitis (Typhlitis)

Inflammation and Ischemia

Ulcerative Colitis

Toxic Megacolon

Ischemic Colitis

Appendicitis

Mucocele of Appendix

Colonic Diverticulosis

Diverticulitis

Epiploic Appendagitis

Degenerative

Sigmoid Volvulus

Cecal Volvulus

Colonic Ileus and Ogilvie Syndrome

Fecal Impaction and Stercoral Ulceration

Rectal Prolapse and Intussusception

Trauma

Colorectal Trauma

Benign Neoplasms

Tailgut Cyst

Colonic Polyps

Villous Adenoma

Malignant Neoplasms

Colon Carcinoma

Rectal Carcinoma

Familial Adenomatous Polyposis

Appendiceal Tumors

Colonic Metastases and Lymphoma

Spleen

Introduction and Overview

Imaging Approach to Spleen

Normal Variants and Artifacts

Accessory Spleen

Congenital

Asplenia and Polysplenia

Infection

Splenic Infection and Abscess

Degenerative

Splenomegaly and Hypersplenism

Vascular Disorders

Splenic Infarction

Trauma

Splenic Trauma

Splenosis

Benign Neoplasms

Splenic Cyst

Primary Splenic Tumors

Malignant Neoplasms

Splenic Metastases and Lymphoma

Liver

Introduction and Overview

Imaging Approach to Liver

Congenital

Congenital Hepatic Fibrosis

AD Polycystic Liver Disease

Variant Vascular and Biliary Anatomy of Liver

Infection

Hepatic Pyogenic Abscess

Hepatic TB and Fungal Infections

Hepatic Amebic Abscess

Hepatic Hydatid Cyst

Hepatic Schistosomiasis

Viral Hepatitis

Inflammation

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

Metabolic or Inherited

Glycogen Storage Disease

Hemochromatosis

Wilson Disease

Degenerative

Hepatomegaly

Vascular Disorders

Transient Hepatic Attenuation or Intensity Difference (THADs and THIDs)

Arterioportal Shunt

Portal Vein Occlusion

Passive Hepatic Congestion

Budd-Chiari Syndrome

Venoocclusive Disease

Hepatic Infarction

Peliosis Hepatis

Hereditary Hemorrhagic Telangiectasia

HELLP Syndrome

Trauma

Hepatic Trauma

Treatment Related

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

Malignant Neoplasms

Hepatocellular Carcinoma

Fibrolamellar Carcinoma

Peripheral (Intrahepatic) Cholangiocarcinoma

Epithelioid Hemangioendothelioma

Biliary Cystadenocarcinoma

Hepatic Angiosarcoma

Undifferentiated Sarcoma

Hepatic Metastases and Lymphoma

Biliary System

Introduction and Overview

Imaging Approach to Biliary System

Normal Variants and Artifacts

Biliary Normal Variants and Artifacts

Congenital

Congenital Abnormalities of Gallbladder

Caroli Disease

Choledochal Cyst

Infection

Recurrent Pyogenic Cholangitis

Ascending Cholangitis

Pancreatobiliary Parasites

AIDS Cholangiopathy

Gallbladder Hydrops and Empyema

Inflammation

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

Degenerative

Biloma

Vascular Disorders

Ischemic Bile Duct Injury

Trauma

Biliary Trauma

Treatment Related

Chemotherapy-Induced Cholangitis

Benign Neoplasms and Tumor-Like Conditions

Gallbladder Polyps

Malignant Neoplasms

Gallbladder Carcinoma

Ampullary Carcinoma

Biliary Metastases and Lymphoma

Biliary Papillomatosis

Biliary IPMN

Pancreas

Introduction and Overview

Imaging Approach to Pancreas

Congenital

Agenesis of Dorsal Pancreas

Annular Pancreas

Pancreas Divisum

Asymmetric Fatty Lobulation of Pancreas

Ectopic Pancreatic Tissue

Inflammation

Acute Pancreatitis and Complications

Chronic Pancreatitis

Groove Pancreatitis

Autoimmune (IgG4) Pancreatitis

Degenerative

Pancreatic Lipomatous Pseudohypertrophy

Trauma

Pancreatic Trauma

Treatment Related

Postoperative Pancreas

Pancreatic Transplantation

Benign Neoplasms and Tumor-Like Conditions

Pancreatic Serous Cystadenoma

Nonneoplastic Pancreatic Cysts

Malignant Neoplasms

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