Chapter 2 The Liver Flashcards

(243 cards)

1
Q

_____ describes the transverse image taken of the porta hepatis

A

Mickey sign

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2
Q

The ____ carries oxygenated blood to the liver from the abdominal aorta

A

Common hepatic artery

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3
Q

The porta hepatis may also be referred to as

A

Liver Hilum

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4
Q

Scanning after a meal will often demonstrate an increase in

A

Portal vein flow

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5
Q

Normal flow within the portal veins should be:

A

Hepatopetal and monophasic

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6
Q

Enlargement of the portal veins is often indicative of

A

Portal hypertension

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7
Q

The blood within the portal vein is partially oxygenated because it is derived from the:

A

Intestines

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8
Q

The ______ provides the liver with approximately 75% of its total blood supply

A

Portal vein

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9
Q

The main portal vein is created by the union of the

A

SMV & Splenic vein

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10
Q

The main portal vein enters the liver at the _______

A

Porta hepatis (liver hilum)

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11
Q

The ______ has its own separate blood supply and venous drainage, it’s the smallest hepatic lobe

A

Caudate lobe

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12
Q

The ______ is used to separate the liver into eight surgical segments

A

Couinaud system

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13
Q

The liver is covered by _____, a thin fibrous casing

A

Glisson capsule

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14
Q

The left lobe of the liver is located;

A

Within the epigastrium and may transverse the midline and extend into the left hypochondrium

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15
Q

The right lobe of the liver is located

A

RUQ

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16
Q

______ is the largest parenchymal organ in the body

A

Liver

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17
Q

In early embryonic life, the liver is responsible for:

A

Hemopoiesis

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18
Q

E. Granulosus is associated with

A

Hydatid liver cyst

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19
Q

The childhood syndrome beckwith-weidermann is associated with an increased risk for developing:

A

Hepatoblastoma

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20
Q

Clinical findings of hepatocellular carcinoma (3):

A
  1. Elevated AFP
  2. Abnormal liver function test (LFTs)
  3. Cirrhosis
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21
Q

______ is considered the most common benign childhood hepatic mass

A

Infantile Hemangioendothelioma

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22
Q

_____ is often associated with the use of oral contraceptives

A

Hepatic adenoma

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23
Q

_____ is the most common form of liver cancer

A

Metastatic liver disease

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24
Q

Normal flow toward the liver in the portal veins is termed

A

Hepatopetal

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25
Common sequela of cirrhosis includes:
1. Portal hypertension 2. Varicosities in abdomen 3. Portal vein thrombosis 4. Splenomegaly 5. HCC
26
What form of **hepatic abnormality** are **immunocompromised patients** _more prone to_ develop?
Candidiasis
27
Clinical findings of hepatitis (9):
1. Chills 2. Dark urine 3. **Elevated LFTs** 4. Fatigue 5. Fever 6. **Hepatosplenomegaly** 7. **Jaundice** 8. Nausea 9. Vomiting
28
The **most common** cause of **cirrhosis**:
Cirrhosis
29
Sonographically, when the liver is difficult to penetrate and diffusely echogenic, this is indicative of?
Fatty liver disease
30
Shortly after birth, the ductus venosus collapse and becomes the:
Ligamentum venosum
31
Clinical findings of fatty liver disease;
Elevated LFTs (No symptoms)
32
____ is the **leading indication** for **liver transplantation** in the U.S.A
Hepatitis C
33
The inferior extension of the caudate lobe is referred to as:
Papillary process
34
**Normal flow** within the **_hepatic veins_** is said to be:
Triphasic
35
The left umbilical vein after birth becomes the:
Ligamentum teres
36
The left portal vein divides into:
Medial and lateral branches
37
A tongue like extension of the right lobe of the liver is termed:
Riedel lobe
38
Buds-chiari syndrome leads to a reduction in the size of:
Hepatic veins
39
**Normal flow** within the **hepatic artery** should **demonstrate** a:
Low-resistance wave form pattern, with a quick upstroke and gradual deceleration with diastole
40
_______ have brighter walls that the hepatic veins
Portal veins
41
The right lobe of the liver can be divided into:
Anterior and posterior segments
42
The diameter of the portal vein should not exceed:
13mm
43
The right portal vein divides into:
Anterior and posterior branches
44
The TIPS shunt is placed:
Between a portal vein and hepatic vein
45
The right lobe of the liver is divided into segments by the:
Right hepatic vein
46
The right Intersegmental fissure contains the:
Right hepatic vein
47
The main portal vein divides into:
Left and right branches
48
The Ligamentum teres can be used to separate the:
Medial and lateral segments of the left lobe
49
The main lobar tissue contains the:
Middle hepatic vein
50
What are the three structures located within the porta hepatis
•main portal vein •CBD •hepatic artery
51
Right sided heart failure often leads to enlargement of the:
IVC and hepatic veins
52
The right lobe can be divided into an anterior and posterior segment by the:
Right hepatic vein
53
Where does the right hepatic vein lie:
Within the right intersegmental fissure
54
The right lobe can be separated from the left lobe by the:
Middle hepatic vein
55
Where does the middle hepatic vein lie:
Within the main lobar fissure
56
The caudate lobe can be separated from the left lobe by the:
Ligamentum venosum
57
As the main portal vein enters the liver it splits into the:
Right and left portal veins
58
The hepatic veins drain into the:
IVC
59
The _____ veins increase in size as they approach the diaphragm
Hepatic
60
______ have a triphasic blood flow pattern
Hepatic veins
61
Occlusion or narrowing of the hepatic veins is seen with:
Budd-chiari syndrome
62
In utero, the umbilical vein supplies the fetus with:
Oxygenated blood
63
The umbilical vein travels to the liver and bifurcates into a:
Left and right branche
64
_____ shunts blood directly into the fetal IVC
Ductus venosum (right branch)
65
The Ligamentum teres ascends along the:
Falciforme ligament
66
The Ligamentum venosum can be seen:
Anterior to the caudate lobe
67
The falciform ligament in transverse can be seen between the:
Left and right hepatic lobes
68
Riedel lobe is most often seen in:
Women
69
Riedel lobe may extend inferiorly as far as the:
Iliac crest
70
The normal liver is:
Homogeneous
71
The liver is slightly less echogenic than the:
Spleen
72
When compared with the pancreas, the liver is slightly
Less echogenic
73
The liver measures approximately
13 - 15cm
74
Fatty liver disease is also known as:
Hepatic steatosis
75
_____ is acquired and reversible
Nonalcoholic fatty liver disease
76
The cause of nonalcoholic fatty liver disease include (6):
1. starvation 2. obesity 3. chemotherapy 4. diabetes mellitus 5. hyperlipidemia 6. pregnancy
77
Metabolic syndrome can lead to:
Steatohepatitis
78
Focal fatty infiltration and focal fatty sparing can occur in:
The same place
79
The signs of sparing and infiltration are seen:
near the porta hepatis and the left medial segment
80
____ is said to resolve within 4 months
Acute hepatitis
81
_____ persists beyond 6 months
Chronic hepatitis
82
The left lobe of the liver can be divided into
Medial and lateral segments
83
The thin fibrous casing of the liver is the
Glisson capsule
84
The hepatic veins are considered intersegmental and interlobar because they are:
Located between the segments and the lobes
85
Shortly after birth, the ductus venosus collapses and becomes the:
Ligamentum venosum
86
The left umbilical vein connects directly to the:
Left portal vein
87
After birth the left umbilical vein becomes a fibrous cord known as the:
Ligamentum Teres (round ligament)
88
Ligamentum Teres is potentially identifiable with sonography within the:
Lower margins of the falciform ligament
89
_____ can be described as a tongue like extension of the right hepatic lobe
Riedel lobe
90
To differentiate Riedel lobe from hepatomegaly, one could exam the:
Left lobe for coexisting enlargement
91
The patient should fast for a period of _____ if the entire RUQ is to be evaluated
8 hours
92
The echogencity of the liver is either equal to or slightly greater than the parenchyma of the:
Right kidney
93
Hepatomegaly is often suspected if the liver measures greater than _____ in the midhepatic line
15.5cm
94
______is a disorder characterized by fatty deposits (triglycerides) within the hepatocytes
Fatty liver
95
______ has been cited as the most **common liver _disorder_** in the western world
Nonalcoholic fatty liver disease
96
Fatty liver disease is also the hepatic manifestation of a disorder known as
Metabolic syndrome
97
______ is inflammation of the liver disease leading to FIBROSIS, cirrhosis, and hepatocellular carcinoma
Steatohepatitis
98
_____ will cause the liver to appear diffusely echogenic and it will be more difficult to penetrate
Diffuse infiltration
99
Clinical findings of fatty liver disease:
Elevated LFTs
100
____ is inflammation of the liver, which can ultimately lead to cirrhosis, portal hypertension and HCC
Hepatitis
101
A benign liver mass composed of a combination of hepatocytes and fibrous tissue that typically contains a central scar
Focal nodular hyperplasia
102
The left lobe of the liver can be separated from the right lobe by the
Middle hepatic vein
103
______ is typically transmitted through contaminated water found in places such as Mexico, Central America, South America, Asia, India, and Africa
Amebic liver abscess
104
An abscess that develops from a parasite that grows in the colon and invades the liver via the portal vein
Amebic hepatic abscess
105
____ is the largest lobe in the liver
Right hepatic lobe
106
The only part of the liver not covered by peritoneum
Bare area
107
Where is the liver measurement taken at:
Right mid clavicular line
108
The liver measurement is done:
Cranial to caudal
109
The left lobe of the liver is best imaged:
Midline inferior to the xiphoid
110
**Cirrhosis caused by hepatitis** will _lead to_ the development of
Macronodule (>1cm)
111
Cirrhosis caused by alcoholism will lead to the development of:
Larger nodules that measure less than 1cm
112
Sonographic findings of cirrhosis include (4):
1. Echogenic, small right lobe 2. Enlarged caudate 3. Nodular surface irregularity 4. Ascites
113
Cirrhosis can also be caused by
•Wilson disease •primary biliary cirrhosis •hepatitis •cholangitis •hemochromatosis
114
Common sequela of cirrhosis includes (3):
1. Portal hypertension 2. Portal vein thrombosis 3. HCC
115
_____ is a liver disorder that is defined as hepatocyte death, fibrosis and necrosis of the liver and the subsequent development of regenerating nodules
Cirrhosis
116
In the presence of hepatitis the gallbladder wall may be
Thickened
117
Sonographically the periportal cuffing is known as:
“Starry sky” sign
118
_____ is an increase in the echogencity of the walls of the portal triads
Periportal cuffing
119
As the liver enlarges, it tends to become
More hypoechoic
120
Bilirubin exposure in newborns is also known as
Kernicterus
121
In newborns, brain damage can occur with severe jaundice as a result of:
Bilirubin exposure
122
Jaundice related hepatitis is known as
Nonobstructive Jaundice
123
_____ relates to hepatitis is on a cellular level and is not associated with biliary obstruction
Jaundice
124
_____ is characterized by disproportionate absorption of dietary iron
Hemochromatosis
125
Chronic hepatitis can be caused by (4):
1. Wilson disease 2. Hemochromatosis 3. Autoimmune disorder 4. Drug induced
126
Hepatitis may be triggered by reactions to systemic viruses such as:
•HSV •Epstein-Barr virus
127
_____ is the leading indication for **liver transplantation** in the United States
Hepatitis C
128
Hepatitis C is spread by contact with
•blood •body fluid
129
Hepatitis B is spread by contact with:
•contaminated body fluid •mother to infant •inadvertent blood contact
130
Hepatitis A is spread by
Fecal-oral route in contaminated water or food
131
The two most common forms are hepatitis:
•A •B
132
List all the forms of hepatitis:
•A •B •C •D •E •G
133
_____ causes the body to accumulate excess copper
Wilson disease
134
The posterior surface of the right lobe of the liver are marked by three fossae:
•the porta hepatis •the gallbladder •IVC
135
The right lobe of the liver occupies the
Right hypochondrium
136
With **portal hypertension** the **coronary vein** will demonstrate **abnormal flow toward** the ________ and will measure ________
*Esophagus *Greater than 6mm
137
In some individuals, the normal coronary vein can be seen arising from:
Splenic vein and extending superiorly toward the left
138
Coronary vein AKA:
Left gastric vein
139
Sonographic evidence of enlargement and reversed flow within the ________ may be seen with portal hypertension
Coronary vein
140
With portal hypertension, the umbilical vein becomes open again and shunts blood away from the liver and into:
epigastric veins
141
Abdominal varicosities may be noted near the (3):
1. Splenic hilum 2. Renal hilum 3. Gastroesophageal junction
142
The umbilical vein is associated with :
•left portal vein •Ligamentum Teres •falciform ligament
143
The stiffer the liver the more _____
Fibrosis present
144
Possible Doppler findings in patients with cirrhosis include (2):
1. **Monophasic flow** within the **hepatic veins** 2. **Hepatofungal flow** within the **portal veins**
145
_____ is the elevation of blood pressure within the portal venous system
Portal hypertension
146
The most common cause of portal hypertension is:
Cirrhosis
147
Normal flow towards the liver within the portal veins is termed ______
Hepatopetal
148
With ______ the liver becomes fibrotic or scarred and more difficult to perfuse
Cirrhosis
149
With cirrhosis, the blood traveling into the main portal vein meets ______
Greater vascular resistance
150
Thrombus can completely _____ the portal vein
Occlude
151
Portal vein thrombosis is seen in conditions such as (7):
1. HCC 2. Portal hypertension 3. Pancreatitis 4. Cholecystitis 5. Pregnancy 6. Oral contraceptives 7. Surgery
152
______ is the development of clots within the portal vein
Portal vein thrombosis
153
_____ is most commonly caused by tumors from adjacent organs or lymphadenopathy
Portal vein compression
154
Portal vein compression, which subsequently leads to ______
Portal vein obstruction
155
Surgically placed shunts include
• Portocaval shunt •splenorenal shunts •mesocaval shunt
156
______ may be placed to reduce the likelihood of complications resulting from portal hypertension
Surgical shunts
157
_____ is an **ominous sign** of **ruptured esophageal varices** because it markedly **increased mortality and morbidity**
Hematemesis
158
Budd-chiari syndrome will cause _____ of the IVC
Narrowing
159
______ may also appear as a cyst within a cyst
Hydatid cyst
160
Hydatid cyst debris is referred to as
Hydatid sand
161
Hydatid cyst may appear as an
Anechoic mass containing some debris
162
______ moves from the bowel through the portal vein to enter the liver
Echinococcus grandulosus
163
_____ is a tapeworm that lives in dog feces
Echinococcus grandulosus
164
Hydatid liver cysts develop most commonly from a parasite referred to as
Echinococcus grandulosus
165
A Hydatid liver cyst is also known as
Echinococcal cyst
166
Clinical findings of hepatic cysts (4):
1. Asymptomatic 2. Possible normal LFTs 3. ADPKD 4. Hemorrhagic or large cysts may cause RUQ pain
167
When pain occurs because of hepatic cysts, it may be due to
•hemorrhage •infection •secondary to mass effect
168
Hepatic cysts are often associated with
Autosomal dominant polycystic kidney disease (ADPKD)
169
True hepatic cysts are usually not encountered until
Middle age
170
Sonographic findings of Budd-Chianti syndrome (5):
1. Nonvisualization/reduce visualization of the hepatic vein 2. Thrombus within the hepatic veins 3. Enlarged caudate lobe 4. Narrowing of the IVC 5. Lack of flow in the hepatic veins
171
Sonographic findings of hepatic cysts (3):
1. **Anechoic mass(es)** with _posterior enhancement_ 2. May have **irregular shape** 3. **Clusters of cysts** May be noted
172
Sonographic findings of hydatid liver cysts (4):
1. Anechoic mass containing some debris (hydatid sand) 2. ”Water lily” sign 3. Mass May contain calcifications 4. “Mother/daughter” cyst
173
Amebic abscesses are mostly found in the:
Right lobes of the liver near the capsule
174
With time, thrombus will become more _______ and_______within the portal vein
•echogenic •noticeable
175
The ______of the portal veins will appear as wormlike or serpiginous vessels within the region of the portal vein
Cavernous transformation
176
______ can also be the result of tumor invasion within the portal vein
Portal occlusion
177
_____within the portal veins or mesenteric veins that result from ischemic bowel disease is typically fatal
Gas
178
Portal venous gas Can be confused with ______
Pneumobilia
179
_____ is air located within the biliary ducts
Pneumobilia
180
**Portosystemic collaterals and varicosities** can develop **within the abdomen** as a result of _body’s attempt to repair itself_ by:
channeling blood away from the damaged liver
181
With greater vascular resistance the pressure within the_______increases resulting in portal hypertension
Portal veins
182
The flow within the portal vein can eventually become reversed this is termed
Hepatofugal
183
Shunting of the blood toward the esophagus increases the risk for ______
Esophageal hemorrhage and death
184
Hepatofugal flow is _____ and _____
•irregular •Stagnant
185
Along with hepatofugal flow, the portal vein diameter will exceed ______in the anterior dimension and the SMV will exceed ______
•13mm •10mm
186
Hepatofugal flow increases the patients likelihood of developing:
Portal vein thrombosis
187
Clinical features of portal hypertension often mimic_____
Cirrhosis
188
Clinical findings of focal nodular hyperplasia
Asymptomatic
189
Focal nodular hyperplasia is composed of a combination of:
Hepatocytes and fibrous tissue
190
Clinical findings of a cavernous hemangioma (1);
Asymptomatic
191
Sonographic findings of a cavernous hemangioma (2):
1. Small, **hyperechoic** mass 2. In the **right lobe**
192
The most common benign liver tumor is the
Cavernous hemangioma
193
Cavernous hemangioma measures
Less than 3cm but some are larger
194
______can result from the spread of infection from inflammatory conditions
Pyogenic hepatic abscess
195
_____ results from the spread of fungus, namely Candida albicans, in the blood to the liver
Hepatic candidiasis
196
Clinical findings of hepatic candidiasis (5):
1. Immunocompromised patients 2. RUQ pain 3. Fever 4. Leukocytosis 5. Infection symptoms
197
Sonographic findings of a hepatocellular adenoma (2):
1. **HYPOECHOIC** 2. May be hyperechoic, isoechoic, or be comprised of **mixed echogenicities**
198
Clinical findings of a hepatocellular adenoma (3):
1. Asymptomatic 2. Oral contraceptives use 3. Pain occurs with hemorrhage
199
Sonographic findings of hepatic lipoma
Hyperechoic mass
200
Clinical findings of hepatic lipoma (1):
1. Asymptomatic
201
Sonographic findings of hepatic hematoma (liver bruise) 3:
1. Fresh clot may appear hyperechoic 2. Older hemorrhage can appear anechoic or complex 3. May be intrahepatic or subcapsular
202
The 8 ligaments of the liver are:
• coronary ligament •right triangular ligament •left triangular ligament •falciform ligament •Ligamentum Teres •Ligamentum venosum •gastrohepatic ligament •hepatoduodebal ligament
203
_____ can appear solid or complex depending on their age
Hematomas
204
Clinical findings of hepatic hematoma (4):
1. Trauma 2. Recent surgery 3. Pain 4. Decreased hematocrit
205
The _____ will yield a hypoechoic rim, with the center of the mass often isoechoic to normal liver tissue
Target lesion
206
Sonographic findings of hepatocellular carcinoma (3):
1. Solitary, hypoechoic mass 2. Heterogeneous masses scattered throughout the liver 3. ”Target” or “bulls-eye” ascites
207
HCC is most often seen in?
Men and frequently accompanied by cirrhosis or chronic hepatitis
208
**Diffuse metastasis** Can produce an appearance of a **nodular liver** termed
Pseudocirrhosis
209
Clinical findings of hepatic metastasis (6):
1. Abnormal LFTs 2. Weight loss 3. Jaundice 4. RUQ pain 5. Hepatomegaly 6. Abdominal swelling with ascites
210
Metastatic cancer from the gastrointestinal tract and pancreas tends to be _____
Calcified tumors
211
Clinical findings _hepatocellular carcinoma_ (9):
1. Elevated AFP 2. Abnormal LFTs 3. Cirrhosis 4. Chronic hepatitis 5. weight loss 6. Hepatomegaly 7. Fever 8. Palpable mass 9. Ascites
212
Sonographic findings of hepatic metastasis (4):
1. Hyperechoic, hypoechoic calcified cystic or heterogeneous masses 2. Mass demonstrating a hypoechoic rim and central echogenic region 3. Diffusely heterogeneous liver 4. Possible ascites
213
_____ is the most **common** form of **liver cancer**
Metastatic liver disease
214
What is the most common vascular complication of a liver transplantation
Hepatic artery thrombosis
215
Sonographic findings of infantile hemangioendothelioma (2):
1. Homogeneous or complex hepatic mass 2. Calcifications or cystic spaces
216
Sonographic findings of Hepatoblastoma (2):
1. Solid, hyperechoic or heterogeneous mass 2. Mass may contain some **calcifications**
217
Clinical findings of Hepatoblastoma (malignant) 8:
1. May be **asymptomatic** 2. **Palpable abdominal mass** 3. Hepatomegaly 4. Abdominal pain 5. Weight loss 6. Anorexia 7. Elevated AFP 8. Jaundice
218
There is a high incidence of Hepatoblastoma in children who have
Beckwith-wie-demann syndrome
219
_____are most often discovered before age 5, with half of the cases identified in children less than 2 years old
Hepatoblastoma
220
Sonographic findings of a pyogenic hepatic abscess (3):
1. Complex cyst with thick walls 2. Debris, septations and/or gas 3. Air may produce dirty shadowing/ring down artifact
221
Clinical findings of a pyogenic hepatic abscess (5):
1. Fever 2. Hepatomegaly 3. Leukocytosis 4. Abnormal LFTs 5. RUQ pain
222
Clinical findings of hydatid liver cysts (6):
1. Leukocytosis 2. fever 3. jaundice 4. Pain 5. Infection symptoms 6. Recently traveled abroad
223
Lab findings of amebic hepatic abscess (3):
1. Leukocytosis 2. Elevated LFTs 3. Mild anemia
224
Clinical findings of an amebic hepatic abscess
1. Hepatomegaly 2. Pain 3. General malaise 4. Diarrhea 5. Fever 6. Leukocytosis 7. Elevated LFTs 8. Traveled abroad
225
Cyst rupture could lead to:
Anaphylactic shock
226
_____ comes from the parasite entamoeba histolytica that grows in the colon and invades the liver via the portal vein
Amebic hepatic abscess
227
_____ is described as the **occlusion of the hepatic veins**, with possible **coexisting occlusion of the IVC**
Budd-chiari syndrome
228
_____ involves the placement of a stent between the portal veins and hepatic veins to shunt blood and reduce portal systemic pressure
TIPS
229
_____ correlates with cirrhosis complications including variceal hemorrhage, ascites and HCC. All signs of advance cirrhosis and portal hypertension
Liver stiffness
230
One of the most common sonographically identifiable collaterals in portal hypertension is the recanalization of the
Paraumbilical vein
231
If ascites is not present with cirrhosis, a _______ can be used to analyze the liver surface for surface nodularity or lumps
High-frequency linear transducer
232
Focal nodular hyperplasia has been referred to as a?
“Stealth lesion” because it may be difficult to identify
233
**Focal nodular hyperplasia** typically contains a _______ that is **not always detected** with sonography but is readily _identified with CT and MRI_
Central stellate (star-like) scar
234
Budd-chiari syndrome can be seen secondary to (7):
1. Congenital webbing disorder 2. Coagulation abnormalities 3. Tumor invasion from HCC 4. Thrombosis 5. Oral contraceptives 6. Pregnancy 7. Trauma
235
Clinical symptoms of budd-chiari syndrome when found in females on oral contraceptives include (4):
1. Ascites 2. RUQ pain 3. Hepatomegaly 4. Splenomegaly
236
Clinical findings of budd-chiari syndrome (5):
1. Ascites 2. Elevated LFTs 3. Hepatomegaly 4. Splenomegaly 5. Upper abdominal pain
237
Patients with portal hypertension will have many of the same sonographic findings as cirrhosis including
•ascites •splenomegaly •portal vascular and shunting abnormalities •development of collaterals channels
238
Sonographic findings of focal nodular hyperplasia (2):
1. Isoechoic to liver 2. **Central scar** will have **hypervascularity**
239
Sonographic findings of hepatic candidiasis (3):
1. **Multiple masses** with hyperechoic central portions and hypoechoic boarders **“target”, “halo”, or “bullseye”** 2. Typically **1cm or smaller** 3. **Older lesions may calcify**
240
Sonographic findings of an amebic hepatic abscess (3):
1. Round, hypoechoic / anechoic mass 2. May contain debris (with fluid debris layering) 3. Anechoic enhancement
241
_____ are typically identified in the first few weeks or months of life
Infantile hemangioendothelioma
242
Clinical findings of _infantile hemangioendothelioma_ (3):
1. Pediatric patient 2. May cause hepatomegaly 3. May be accompanied by hemangiomas
243
_____ is the _most common_ **benign liver childhood tumor**
Infantile hemangioendothelioma