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 OverviewImaging Approach to Abdominal Manifestations of Systemic ConditionsInfection HIV/AIDSTuberculosisMononucleosisMetabolic or Inherited Cystic FibrosisSickle Cell AnemiaAmyloidosisSarcoidosisVascular DisordersSystemic HypotensionSuperior Vena Cava ObstructionVasculitisTrauma Foreign BodiesBarotraumaTransplantationPosttransplant Lymphoproliferative DisorderMalignant Neoplasms Leukemia and LymphomaMetastatic MelanomaKaposi SarcomaTreatment Response AssessmentPeritoneum, Mesentery, and Abdominal WallIntroduction and OverviewImaging Approach to the Peritoneum, Mesentery, and Abdominal WallInfectionAbdominal AbscessInflammationPeritonitisSclerosing MesenteritisDegenerativeAscitesOmental InfarctExternal HerniasInguinal HerniaFemoral HerniaObturator HerniaVentral HerniaSpigelian HerniaLumbar HerniaUmbilical HerniaInternal HerniasParaduodenal HerniaTransmesenteric Postoperative HerniaBochdalek HerniaMorgagni HerniaVascular DisordersPortal Hypertension and VaricesAbnormalities of Mesenteric VasculatureTraumaTraumatic Abdominal Wall HerniaTraumatic Diaphragmatic RuptureTreatment RelatedPostoperative State, AbdomenAbdominal Incision and Injection SitesPeritoneal Inclusion CystBenign NeoplasmsLymphangioma (Mesenteric Cyst)DesmoidMalignant NeoplasmsAbdominal MesotheliomaPeritoneal MetastasesPseudomyxoma PeritoneiMiscellaneousEventration and Paralysis of DiaphragmVicarious ExcretionEsophagusIntroduction and OverviewImaging Approach to EsophagusInfection*Candida* EsophagitisViral EsophagitisChagas DiseaseInflammationReflux EsophagitisBarrett EsophagusCaustic EsophagitisDrug-Induced EsophagitisRadiation EsophagitisEosinophilic EsophagitisEpidermolysis and PemphigoidDegenerativeEsophageal WebsCricopharyngeal AchalasiaEsophageal AchalasiaEsophageal Motility DisturbancesEsophageal SclerodermaSchatzki RingHiatal HerniaVascular DisordersEsophageal VaricesEsophageal DiverticulaZenker DiverticulumIntramural PseudodiverticulosisTraction DiverticulumPulsion DiverticulumTraumaEsophageal Foreign BodyEsophageal PerforationBoerhaave SyndromeTreatment RelatedEsophagectomy: Ivor Lewis and Other ProceduresBenign NeoplasmsIntramural Benign Esophageal TumorsFibrovascular PolypEsophageal Inflammatory PolypMalignant NeoplasmsEsophageal CarcinomaEsophageal Metastases and LymphomaStomachIntroduction and OverviewImaging Approach to StomachCongenitalGastric DiverticulumInflammationGastritisGastric UlcerZollinger-Ellison SyndromeMénétrier DiseaseCaustic Gastroduodenal InjuryDegenerativeGastroparesisGastric BezoarGastric VolvulusTreatment RelatedIatrogenic Injury: Feeding TubesPartial Gastrectomy: Billroth ProceduresFundoplication ComplicationsImaging of Bariatric SurgeryBenign NeoplasmsGastric PolypsIntramural Benign Gastric TumorsMalignant NeoplasmsGastrointestinal Stromal Tumor (GIST)Gastric CarcinomaGastric Metastases and LymphomaDuodenumIntroduction and OverviewImaging Approach to DuodenumNormal Variants and ArtifactsDuodenal Flexure PseudotumorProminent Duodenal Ampulla Mimicking MassCongenitalDuodenal DiverticulumInflammationDuodenitisDuodenal UlcerBrunner Gland HyperplasiaVascular DisordersSMA SyndromeTraumaGastroduodenal TraumaTreatment RelatedAortoenteric FistulaBenign NeoplasmsDuodenal PolypsMalignant NeoplasmsDuodenal CarcinomaDuodenal Metastases and LymphomaSmall IntestineIntroduction and OverviewImaging Approach to Small IntestineCongenitalMalrotationDuplication CystSmall Bowel DiverticulaMeckel DiverticulumInfectionMesenteric Adenitis and EnteritisIntestinal Parasites and InfestationOpportunistic Intestinal InfectionsInflammation Celiac-Sprue DiseaseWhipple DiseaseMastocytosisCrohn DiseaseIntestinal SclerodermaIntestinal (Angioneurotic) AngioedemaSmall Bowel NSAID StrictureMetabolic or InheritedIntestinal LymphangiectasiaDegenerative IleusSmall Bowel ObstructionPneumatosis of IntestineIntussusceptionMalabsorption ConditionsGallstone IleusEnteric Fistulas and Sinus TractsVascular DisordersIschemic EnteritisTraumaMesenteric and Small Bowel TraumaTreatment RelatedPostoperative State, BowelRadiation Enteritis and ColitisTransplantationSmall Intestine TransplantationBenign NeoplasmsIntramural (Mesenchymal) Intestinal TumorsIleocecal Valve Lipoma and Lipomatous InfiltrationHamartomatous Polyposis SyndromesMalignant NeoplasmsCarcinoid TumorSmall Bowel CarcinomaIntestinal Metastases and LymphomaIntestinal GISTColonIntroduction and OverviewImaging Approach to ColonInfectionInfectious ColitisNeutropenic Colitis (Typhlitis)Inflammation and IschemiaUlcerative ColitisToxic MegacolonIschemic ColitisAppendicitisMucocele of AppendixColonic DiverticulosisDiverticulitisEpiploic AppendagitisDegenerativeSigmoid VolvulusCecal VolvulusColonic Ileus and Ogilvie SyndromeFecal Impaction and Stercoral UlcerationRectal Prolapse and IntussusceptionTraumaColorectal TraumaBenign NeoplasmsTailgut Cyst Colonic PolypsVillous AdenomaMalignant NeoplasmsColon CarcinomaRectal CarcinomaFamilial Adenomatous PolyposisAppendiceal TumorsColonic Metastases and LymphomaSpleenIntroduction and OverviewImaging Approach to SpleenNormal Variants and ArtifactsAccessory SpleenCongenitalAsplenia and PolyspleniaInfectionSplenic Infection and AbscessDegenerativeSplenomegaly and HypersplenismVascular DisordersSplenic InfarctionTraumaSplenic TraumaSplenosisBenign NeoplasmsSplenic CystPrimary Splenic TumorsMalignant NeoplasmsSplenic Metastases and LymphomaLiverIntroduction and OverviewImaging Approach to LiverCongenitalCongenital Hepatic FibrosisAD Polycystic Liver DiseaseVariant Vascular and Biliary Anatomy of LiverInfectionHepatic Pyogenic AbscessHepatic TB and Fungal InfectionsHepatic Amebic AbscessHepatic Hydatid CystHepatic SchistosomiasisViral HepatitisInflammationAlcoholic Liver DiseaseAutoimmune HepatitisSteatosis and SteatohepatitisHepatic Injury From ToxinsCirrhosisPrimary Biliary CholangitisFocal Confluent FibrosisNodular Regenerative HyperplasiaRegenerative and Dysplastic NodulesSolitary Necrotic NodulePeribiliary CystsMetabolic or Inherited Glycogen Storage DiseaseHemochromatosisWilson DiseaseDegenerativeHepatomegalyVascular DisordersTransient Hepatic Attenuation or Intensity Difference (THADs and THIDs)Arterioportal ShuntPortal Vein OcclusionPassive Hepatic CongestionBudd-Chiari SyndromeVenoocclusive DiseaseHepatic InfarctionPeliosis HepatisHereditary Hemorrhagic TelangiectasiaHELLP SyndromeTraumaHepatic TraumaTreatment RelatedRadiation-Induced Liver DiseasePostoperative Changes, LiverTransjugular Intrahepatic Portosystemic Shunt (TIPS)Hepatic TransplantationBenign Neoplasms and Tumor-Like ConditionsHepatic CystHepatic Cavernous HemangiomaFocal Nodular HyperplasiaHepatic AdenomaBiliary HamartomaHepatic AngiomyolipomaHepatic Inflammatory PseudotumorMalignant NeoplasmsHepatocellular CarcinomaFibrolamellar CarcinomaPeripheral (Intrahepatic) CholangiocarcinomaEpithelioid HemangioendotheliomaBiliary CystadenocarcinomaHepatic AngiosarcomaUndifferentiated SarcomaHepatic Metastases and LymphomaBiliary SystemIntroduction and OverviewImaging Approach to Biliary SystemNormal Variants and ArtifactsBiliary Normal Variants and ArtifactsCongenitalCongenital Abnormalities of GallbladderCaroli DiseaseCholedochal CystInfectionRecurrent Pyogenic CholangitisAscending CholangitisPancreatobiliary ParasitesAIDS CholangiopathyGallbladder Hydrops and EmpyemaInflammationGallstones and SludgeAcute Calculous CholecystitisAcalculous CholecystitisXanthogranulomatous CholecystitisEmphysematous CholecystitisMirizzi SyndromeHyperplastic CholecystosesPorcelain GallbladderMilk of Calcium BileAutoimmune (IgG4) CholangitisPrimary Sclerosing CholangitisDegenerativeBilomaVascular DisordersIschemic Bile Duct InjuryTraumaBiliary TraumaTreatment RelatedChemotherapy-Induced CholangitisBenign Neoplasms and Tumor-Like ConditionsGallbladder PolypsMalignant NeoplasmsGallbladder CarcinomaAmpullary CarcinomaBiliary Metastases and LymphomaBiliary PapillomatosisBiliary IPMNPancreasIntroduction and OverviewImaging Approach to PancreasCongenitalAgenesis of Dorsal PancreasAnnular PancreasPancreas DivisumAsymmetric Fatty Lobulation of PancreasEctopic Pancreatic TissueInflammationAcute Pancreatitis and ComplicationsChronic PancreatitisGroove PancreatitisAutoimmune (IgG4) PancreatitisDegenerativePancreatic Lipomatous PseudohypertrophyTraumaPancreatic TraumaTreatment RelatedPostoperative PancreasPancreatic TransplantationBenign Neoplasms and Tumor-Like ConditionsPancreatic Serous CystadenomaNonneoplastic Pancreatic CystsMalignant NeoplasmsPancreatic Ductal CarcinomaMucinous Cystic Pancreatic TumorPancreatic IPMNPancreatic Neuroendocrine TumorsPancreatic Solid and Pseudopapillary NeoplasmPancreatic Metastases and LymphomaAtypical and Rare Pancreatic Tumors