Liver benign/malignant Flashcards
Liver Granulomas?
Asymptomatic
Appear as calcification within the liver parenchyma
May be solitary or multiple
May be related to scarring or an underlying disorder-such as an infection ie-hepatitis or sarcoidosis
liver granuloma
Hamartomas?
- Small, focal ,solid appearing, hypoechoic
- Benign malformations-cells go haywire and hypertrophy
- <6% of population on autopsy
- Often confused with metastatic disease-CTis needed for clarification
- Single or multiple
cavernous hemangioma?
- Benign, congenital tumor consisting of large, blood-filled cystic spaces.
- most common benign tumor of the liver
- Found more frequently in women
- Patients are usually asymptomatic, although a small percentage may bleed, causing right upper quadrant pain.
what is the most common benign tumor of the liver?
cavernous hemangioma
cavernous hemagioma on u/s?
- Homogenous and hyperechoic-tangle of tiny blood vessels
- Extremely low blood flow-avascular on sonography
- May appear hypoechoic-atypical
- Well circumscribed
- Enlarges slowly and undergoes degeneration, fibrosis, and calcification.
- Found in the subcapsular hepatic parenchyma or in the posterior right lobe more than the left lobe of the liver.
cavernous hemangioma
hepatic adenoma
hepatic adenoma?
- seen less commonly than
- more common in
- linked to
Seen less commonly than FNH
More common in women-linked to OC use
Hepatic Adenoma s/s?
- increased incidence with what?
- May be symptomatic-RUQ mass felt if large
- Bleeding within lesion causes pain
- Risk of malignant degeneration
- Incidence is increased in patients with type I glycogen storage disease or von Gierke disease.
- Resection is recommended
Hepatic adenomas-sonographic appearance?
- hetergeneous
- multiple feeding hepatic arteries seen supplying the adenoma from its periphery
- exhibit a capsule
FNH
What is FNH?
More common in women, 2nd most commonly seen tumor
Hormonal influences may be a factor-seen in childbearing years and OC use
Incidental & asymptomatic finding
FNH on u/s?
Exhibits a central scar sometimes -vascular malformation
Solitary, isoechoic, well circumscribed
Contour abnormality of liver surface –displaces vessels -may be subtle
Hypervascular, stellate pattern
Spoke wheel pattern
Fatty tumors?
- associated with
Extremely rare
Associated with renal angiomyolipomas
fatty tumors s/s?
Asymptomatic
Well defined echogenic mass
Indistinguishable from hemangioma, metastasis or focal fat on US
CT confirms diagnosis
broken diaphragm sign is seen with?
fatty tumors
fatty tumor
2 Tumors occurring with hormonal influence?
- FNH
- adenoma
Hepatomegaly?
Enlargement of the liver
Frequent indication for sonography of the liver
On P/E physician can feel the liver edge below the rib cage
hepatomegly causes? measurement? classified as?
Alcohol abuse
RL measurement >14 cm (normal range 13 to 17)
Classified as mild ,moderate and severe as size increases
Reidel’s lobe?
Frequently misinterpreted as enlarged liver
Found more often in women
Tongue shaped process of the liver
Normal variant