Lesson 5A (Part 2) Flashcards Preview

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Flashcards in Lesson 5A (Part 2) Deck (31)
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1

Wandering spleen

Is a congenital anomaly where the spleen is found in unusual locations due to long lax ligaments

2

What can a wandering spleen be mistaken for?

A mass

3

What can easily happen with wandering spleen?

Torsion

4

What do patients present with with wandering spleen? (2)

1. Acute pain
2. Chronic pain

5

What will confirm the diagnosis of torsion?

Lack of vascularity

6

Asplenia

Is a congenital absence of the spleen

7

What occurs with response to asplenia? (3)

1. Impairment of immune response
2. Sepsis
3. Bacterial meningitis

8

Polysplenia

More than one spleen

9

Retrorenal spleen

An anatomical variant in which the inferior portion of the spleen is located behind the upper left kidney

10

Why are radiologists reluctant to perform splenic intervention procedures?

Because it is highly vascular and they dont want to risk bleeding out

11

What is used to diagnose abnormalities of the spleen?

Fine needle biopsies

12

Splenectomy

Complete removal of the spleen

13

Which is larger, polysplenia or an accessory spleen?

Polysplenule

14

Core biopsy

Getting a sample of tissue

15

Needle biopsy

Getting a sample of cells

16

What may be seen in US when trauma blunt force trauma occurs to the spleen?

Free intra-abdominal fluid

17

Where is a common place where fluid accumulates after trauma?

Morison's pouch

18

Where is Morison's pouch located between?

The liver and the right kidney

19

What occurs if the capsule remains intact during trauma? (2)

1. Intraparenchymal
2. Subcapsular hematoma

20

What occurs if the capsule ruptures during trauma? (4)

1. Demonstrate fluid in LUQ
2. Decreased hematocrit
3. May spread through peritoneal cavity
- morison’s pouch and pelvis
4. A focal or free intraperitoneal hematoma may occur

21

How does a hematoma look like on US?

Initially it is a liquid appearing-anechoic space, but after the blood clots its echogenicity resembles normal spleen

22

What can a hematoma mimic?

Splenomegaly

23

What recuts to easily be able to diagnose hematoma?

Reliquification

24

Splenic infarction

Occlusion of the splenic vascular supply

25

What does splenic infarction lead to? (2)

1. Ischemia
2. Tissue necrosis

26

What are 4 complications with splenic infarction?

1. Hemorrhage
2. Rupture
3. Abscess
4. Pseudocyst

27

How does splenic infarction appear on US? (5)

1. Peripheral, wedge shaped, hypoechoic
2. Echogenicity depends on age of infarct
3. Early stages it is anechoic or hypoechoic
4. Progresses to hyperechoic-fibrosis
5. No flow on colour doppler

28

Splenomegaly (3)

1. Diffuse enlargement
2. Capable of growing to an enormous size
3. Into left iliac fossa

29

What measurements are considered splenomegaly?

> 18cm

30

What are causes of splenomegaly? (5)

1. Hematologic
2. Rheumatologic
3. Infectious
4. Congestive
5. Infiltrative