Radiology Notes

My notes during radiology residency, fellowship, and beyond…

Archive for the ‘gi’ Category

Liver metastasis differential

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Hypervascular Liver Metastases
  • RCC
  • Carcinoid
  • Islet cell
  • melanoma
  • thyroid
  • choriocarcinoma
  • Ovarian cystadenocarcinoma
  • pheochromocytoma
Hypovascular Liver Metastases
  • Stomach
  • Colon
  • Pancreas
  • Lung
  • Breast
Hemorrhagic Liver Metastases
  • Colon
  • Thyroid
  • Breast
  • Choriocarcinoma
  • Melanoma
  • RCC
Calcified Liver Mets
  • Mucinous tumors

Dahnert

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Written by lmwong

August 15, 2010 at 12:22 pm

Posted in abdomen, differential, gi, liver

Liver mass in children

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  • Hemangioendothelioma (MC B9)
    • <6 months
    • cutaneous hemangiomas
  • Mesenchymal Hamartoma
    • <10 y
    • large, multiloculated
    • exophytic
  • Hepatoblastoma (MC malignant)
    • Beckwith-Wiedeman syndrome
    • hemihypertrophy
    • mets
  • HCC
    • glycogen storage disease
    • biliary atresia
    liver masses in pediatrics

Written by lmwong

March 9, 2010 at 11:33 am

Disease and Bowel location

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  • Amebiasis = right colon
  • Lymphoma = ileum
  • Sprue = entire colon
  • Giardiasis = proximal small bowel
  • Yersinia = terminal ileum
  • Crohn’s disease = terminal ileum
  • Ulcerative colitis = rectum

Written by lmwong

February 3, 2010 at 11:10 am

Featureless Small Bowel

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Toothpaste, tubular

  • graft-vs.-host disease (GvH)
  • Mycobacterium avium complex (MAC) (in AIDS)
  • ischemia
  • Crohn disease
  • radiation
  • Strongyloides
  • milk enteropathy
  • sprue
  • corrosive enteritis
  • lymphoma
  • amyloidosis
  • mastocytosis
  • FUDR toxicity

Written by lmwong

February 3, 2010 at 11:00 am

GI Buzz Word

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  • central scar = FNH
  • Light bulb = pheochromocytoma
  • Corkscrew = malrotation midgut volvulus
  • Leadpipe colon = ulcerative colitis
  • Featureless bowel = Graft versus Host
  • Cauliflower liver mets = colon mets
  • bird beak esophagus = achalasia
  • plaquelike mucosa = candidiasis esophagitis
  • cloverleaf deformity = healed duodenal ulcer
  • spokewheel mass in mesentery = carcinoid
  • sunburst angiography = mesenteric carcinoid
  • string sign ileium = Crohn’s disease
  • Aphthoid/cobblestone ulcers = Crohn’s disease
  • ribbon bowel = graft-vs-host disease
  • string of beads biliary system = sclerosing cholangitis
  • comet tail artifact in GB = adenomyomatosis

Written by lmwong

February 1, 2010 at 3:01 pm

Posted in abdomen, buzz, gi

Carcinoid

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  • malignant neuroendocrine tumor
  • SB (Ileum) > lung > thyroid/ovary
  • MC malignancy of appendix
  • carcinoid syndrome = secretion of serotonin:  flushing, diarrhea, wheezing, cramping, peripheral edema
  • findings
    • well defined margins
    • lobulated
    • 30% have calcifications
    • intense contrast enhancement
    • lung: typically central location
    • hot on octreotide scan
  • surgery, adjuvant chemotherapy

read more

Written by lmwong

February 1, 2010 at 2:55 pm

Posted in abdomen, chest, gi, pulmonary

Multiple Small Bowel Lesions Differential

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  • lymphoma
  • polyposis syndrome
  • hemangiomas
  • neurofibromas
  • metastases

Written by lmwong

January 28, 2010 at 4:15 pm