Masses of Spleen
Cysts are the most common benign disease of the spleen; congenital cysts account for 64.7 %, posttraumatic cysts 11.6 %, and dermoid cysts 5.8 %
Echostructure of focal splenic lesions Hypoechoic lesion Cyst, Metastasis , abscess, acute hematoma, angioma , infarction, lymphoma, lymphosarcoma
Hyperechoic lesion, Hemorrhagic cyst, Metastasis , abscess, subacute hematoma, angioma, subacute infarction , calcification

Splenic Infarction
1. caused by occlusion of the splenic artery or vein thrombosis of the splenic sinusoids.
2. The whole spleen may be involved in splenic vein thrombosis causing massive splenomegaly.
3. occurs in patients with sickle cell anemia, hematological malignancies and immunological
disorders, thrombophilia and emboli due to endocarditis, but more recently it has been reported as
a complication of chemoembolization for hepatocellular carcinoma.
4. Splenic infarction normally causes pain of varying intensity in the left upper quadrant and lowgrade
fever.
5. US does not reveal acute infarction in 50 % of case
6. ill-defined hypo-echoic triangular-shaped lesions
7. In the healing phase, fibrosis causes the US image to become echoic showing a roughly triangular shape with the base facing the splenic capsule.
If the infarction is large, color Doppler may show an area with no blood supply, CT is the diagnostic method which has the highest sensitivity and specificity in these cases.

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9. Can u identify the lesion :