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15 Cards in this Set

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Forms the embryonic mesoderm and gives rise to connective tissue, blood and blood vessels, the lymphatic system, and cells of the mononuclear phagocyte system
Mesenchymal
Originating from nervous tissue
Neurogenic
originating from embryonic tissue
Embryonic rest
lymphadenopathy, primary retroperitoneal fibrosis, retroperitoneal fibrosis
Solid masses
appear as a mass but is really a mis-shaped organ (horseshoe kidneys, low lying pancreas, varacies, acute retroperitoneal hemorrhage)
Pseudomasses
cysts and lymphangiomas, usually large
Fluid Collections
potential spaces in the abdomen
Ascites
can occur with infection and appears cystic with debris
Puss
Hypoechoic
weaker signals, few to little echoes
Anechoic
zero echoes (rare)
Hyperechoic
lots of echoes
Isoechoic
same
more Hypoechoic, usually has enhancement
Cystic
usually has shadowing or attenuation
Solid
solid and cystic components
Complex