Hemangioma: 

• A hemangioma is a benign, congenital tumor consisting of large, blood-filled cystic spaces. Cavernous hemangioma is the most common benign tumor of the liver. The tumor is found more frequently in females. Patients are usually asymptomatic; although a small percentage may bleed, causing right upper quadrant pain. 
• Hemangiomas enlarge slowly and undergo degeneration, fibrosis, and calcification. They are found in the subcapsular hepatic parenchyma or in the posterior right lobe more than the left lobe of the liver. 
  
  
  

Ultrasound findings:

• The ultrasound appearance is typical; most are hyperechoic with acoustic enhancement.
• Many authors have speculated that the echo dense pattern results from the multiple
• interfaces between the walls of the cavernous sinuses and blood within them.
  They are round, oval, or lobulated with well-defined borders. 
  
  
  

Ultrasound findings:

• The larger hemangiomas may have a mixed pattern resulting from necrosis. 
• Hemangiomas may become more heterogeneous as they undergo degeneration and fibrous replacement.
• They may also project with calcifications or a complex or anechoic echo pattern.
• The differential considerations for hemangioma should include metastases, hepatoma, focal nodular hyperplasia, and adenoma. 
  
  
  

Hemangioma