Retroperitoneal hemangioma

Retroperitoneal hemangiomas  are almost  always of  the  cavernous hemangioma2

They tend to be asymptomatic, especially in  the early stages of their development, but when present, symptoms are non-specific and  due  to  mass effect on adjacent anatomic structure.


On  CT  and  MRI,  a  hemangioma is  generally well defined with  round or lobular margins, and with  low attenuation, low signal intensity on T1-weighted imaging, and high  signal intensity on  both  T2-weighted imaging and heavily  T2-weighted imaging relative to skeletal muscle.

Calcified phleboliths, when visualized, have very low signal intensity on  both T1-weighted imaging and T2-weighted imaging, are better visualized on CT, and are strongly suggestive of the diagnosis.

Nonparenchymal  hemangiomas in  the  abdomen  usually  demonstrate progressive enhancement.2

Treatment is conservative, with surgical removal reserved for  symptomatic  lesions or  to  establish a tissue diagnosis.

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rID: 21500
Tag: refs, cases
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