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Flashcards in Spleen Deck (26):
1

Multiple targetoid/bulls eye lesions in spleen ddx

Mets
Lymphoma
Candida microabscess

2

Whats the next step in suspected candida microabscesses with a negative sonogram?

MRI

3

Which echinococcus presents with sharply defined cysts and daughter cysts? Which one with tiny cystic masses resembling malignancy?

Granulosus has daughter cysts

Multilocularis has cystic masses

4

DDx for calcified splenic cystic lesion?

Echinococcus
Traumatic cyst
Splenic aneurysm

5

Why is an echinoccocal cyst slightly higher attenuation than water?

Inflammatory cells and hydatid sand

6

What is the differential for multiple splenic calcifications?

Healed granulomatous infection
Candida microabscesses
Extrapulmonary pneumocystis
Treated lymphoma
Treated mets

7

How would sarcoid present in the spleen?

Multiple hypoattenuating lesions and/or hepatosplenomegaly

8

What is the most common benign tumor in the spleen?

Hemangioma

9

What is kasabach merrit syndrome?

Anemia, infarction, high output CHF, thrombocytopenia, coagulopathy

seen with large hemangiomas

10

Heterogeneous mass on CT/US?

Hemangioma

11

What are 3 associations with splenic hemangiomas

Klippel trenauny weber
Kasabach merrit
Portal venous hypertension

12

What are the two types of splenic cyst?

True (with cellular lining) and false (without a cellular lining)

13

What are the causes of false splenic cysts?

Trauma, infarction, infection

14

What is a hamartoma?

Normal cellular elements in abnormal quantity, degree of differentiation, and/or cellular arrangment.

15

What is the association with splenic hamartomas?

Hypersplenism

16

What is an inflammatory pseudotumor?

Localized area of inflammatory and fibroblastic cells surrounding regions of hemorrhage and necrosis

17

What is the ddx for a well circumscribed heterogeneously enhancing mass within the spleen

Lymphoma
Mets
Hemangioma
Inflammatory pseudotumor
Hamartoma

18

What are gamma gandy bodies? how do they look on MRI?

Seen in cirrhosis and portal venous hypertension, these develop from prior organized hemorrhage.

Dark on T1 and T2 and bright in gradient echo

19

What is the imaging progression of splenic infarct on US?

Acute - poorly delineated hypoechoic region

Chronic - well marginated and hyperechoic

20

What is the most common malignant tumor in the spleen?

Lymphoma

21

What are the 4 patterns of splenic lymphoma

homogenous enhancement
miliary involvement
multiple masses
solitary large mass

22

How do melanoma mets present in the spleen?

Cystic necrosis with fluid centrally or a sonographic halo around the mass circumference

23

What is the blood supply of the spleen

Splenic artery and short gastric

24

Differentiate primary from secondary hemochromatosis

Primary will involve the pancreas and rarely involve the spleen

Secondary will involve the spleen and spare the pancreas

25

What are the splenic findings with thorium dioxide exposure?

Hyperattenuating

can get fibrosis and atrophy

26

Small densely calcified spleen suggests what disease

Sickle cell