Pancreas, Spleen, Retroperitoneal disorders Flashcards
Pancreas divisum
abscense of the fusion of the anterior and posterior pancreatic ducts.
Predisoposes for recurrent, idiopathic pancreatitits.
Pancrease Know the Balthazar classifications
A - normal panc
B - focal or diffuse thickening
C - Thickening plus peripancreatic edema signs
D - pseudocyst formation at least one spot
E - multiple pseudocysts.
Inflammation of pancreas
hypodense on CT
Tumors hypodense too
Spleen problems
Cysts,
Rupture
Infarction, wedge shaped hypodense, may indicate endocarditis as that is frequent site for the thrombi generating.
Benign tumors: Hemangiomas
Malignant tumors: Lymphomas causing splenomegaly
Angiosarcoma
Fibrosarcoma
Metastases.
CT scan and US biopsy for splenic tumors
Radiology of spleen rupture, what is modality, whats it look like
Contrast CT scan.
Assess it during the portal venous phase, where it should be homogenously enhanced normally.
Lacerations hypodense lines.
Subcapsular hematoma: low density fluid adjcaent to the spleen, compressing and distorting the underlying spleen tissue.
Active bleed: high density
Bleeding into the retroperitoneum
Spleen exam ultrasound
about the same echogenicity as the liver parenchyma, ie mildly hperechoic.
Highly vascular.
CT is best imaging method
What is an accessory spleen
very frequent incidental finding by US and CT.
Sources of retroperitoneal bleeding
Pancreatitis
Splenic rupture
Abdominal Aortic Aneurysm Rupture
Kidney bleeding/trauma
Other retroperitoneal problems
Wilms tumor, Neuroblastomas
