Ex 1 - Liver, Spleen, LN, Peritoneal Space (Randall) Flashcards Preview

726 Imaging Interpretation > Ex 1 - Liver, Spleen, LN, Peritoneal Space (Randall) > Flashcards

Flashcards in Ex 1 - Liver, Spleen, LN, Peritoneal Space (Randall) Deck (19):
1

what is the largest solid organ in the abdomen?

LIVER

2

Which species has abundant falciform fat? (ventral to the liver)

cats

3

Which animals has a larger liver compared to body size

Cats & neonatal and young dogs

4

Hepatomegaly - rad findings

*Rounding or blunting of the caudoventral liver

*Extension beyond costal arch

*Displacement of the gastric axis - caudal and perhaps medial

5

Diff's for Hepatomegaly - Generalized

- inflammation
- endocrine hepatopathy (steroids)
- hepatic venous congestion (RCHF)
- lipidosis
- infiltrative dz
- primary or metastatic neoplasia

6

Diff's for Hepatomegaly - Focal

- primary or metastatic neoplasia
- abscess
- granuloma
- cyst

7

Displaced gastric axis?

Hepatomegaly: caudally

Microhepatia: cranially

8

Microhepatia is generally assoc'd with:

- chronic liver dz
- cirrhosis
- PSS

*deep chested breeds: liver appears small

9

Causes of liver mineralization

Choleliths

Choledocholiths

Parenchymal mineralization (granulomas, neoplasia, abscesses)

10

If you see branching mineralization in liver, think...

Think biliary system!

11

What do we worry about when seeing gas bubbles in liver?

- bacteria producing gas (abscess)

- tumor (necrosis)

12

On V/D, where do we see spleen head?

left (triangle shape)

13

On lateral, where do we see spleen tail?

ventral (triangle)

14

Causes of generalized splenomegaly?

sedation
anesthesia
systemic dz
splenic torsion
neoplasia (lymphoma)

15

Causes of focal splenomegaly

neoplasia (hemangioma, -sarcoma)
EMH
hematoma

16

Should you see tail of spleen in cats on lateral rad?

NO! if you see tail = splenomegaly

17

Region of sublumbar LN

ventral to spine near pelvis

18

Ddx for free peritoneal gas

- iatrogenic (up to 2 wks post-op)
- rupture of hollow viscous (e.g. GI)
- penetrating wounds (e.g. GSW)


*Unless recent sx or intervention has occurred, you see pneumoperitoneum --> do sx exploration

19

Good view for free peritoneal gas?

horizontal