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What is the retroperitoneum located between?
Between the transversalis fascia and the parietal peritoneum
What is in the 3 pararenal spaces of the retroperitoneum?
Anterior pararenal - pancreas
perirenal space - kidneys and adrenals
posterior pararenal - no organs
Ther are 3 compartments in the retroperitoneum what are they?
- Anterior pararenal space
- perirenal space
- posterior pararenal space
What is a normal intestinal wall thickness?
Where and what does the gastroesophageal junction look like?
a target sign, bullseye
posterior to the left lobe of the liver
What causes a lymphocele? and what are its characteristics?
Leakage of the lymph - disruption of the lymphatic channel
fluid collection - cystic
What is the charateristic sign of perivessel lymphoma?
the sandwich or mantle sign
Does lymph tissue cause acoustic enhancement?
Does lymph tissue have acoustic enhancement?
What disease process can cause splenic atrophy?
sickle cell disease
What does a splenic infarct look like sonographically?
a wedge-shaped lesion in the spleen
What can cause splenic infarcts besides trauma?
Splenic artery aneurysms
Sonographically what does a splenic abscess look like?
Complex cysts, may have gas
What is the most common cause for splenomegaly in adults?
What is polysplenia?
- Bilateral Left-sidedness
- -multiple LUQ spleens, no GB, and cardiac defects
What is Asplenia?
- Bilateral right-sidedness
- -no spleen, midline liver and GB, reversed AO and IVC, and cardiac defects
What are the 11 structures located in the retroperitoneum?
- 1)kidneys 2)adrenals
- 3)Ascending and descending colon
- 4)2, 3, and 4th part of the duodenum
- 5)Pancreas 6)IVC
- 7)Aorta 8)Ureters 9)Lymphatics
- 10)superior mesenteric artery and vein
What are the 2 most common causes of granulomas in the spleen?