Discussion of Splenic lymphangioma
- Splenic lymphangioma is a relatively rare benign tumor.
- Clinical manifestations that range from an asymptomatic incidental finding to a large multicentric, symptomatic mass requiring surgical intervention.
- Most splenic lymphangiomas occur in children.
- Splenic lymphangiomas usually initially grow without causing significant clinical effects; when the lesions cause symptoms, they are related to compression of adjacent structures.
- The complications associated with more extensive or larger lymphangiomas of the spleen include bleeding, consumptive coagulopathy, hypersplenism, and portal venous hypertension.
- Symptomatic larger lesions have generally been treated with splenectomy or partial splenectomy.
 Imaging Findings for Splenic lymphangioma
- Often found incidentally at sonographic and CT examinations performed for another reason.
- Sonography and CT typically reveal splenic cysts of various sizes, ranging from a few millimeters to several centimeters in diameter.
- On sonograms, these cystic lesions appear as well-defined hypoechoic masses with occasional internal septations and intralocular echogenic debris.
- On CT scans, lymphangiomas appear as single or multiple thin-walled low-attenuation masses with sharp margins that are typically subcapsular in location. No significant contrast enhancement is typically seen. The presence of curvilinear peripheral mural calcifications suggests the diagnosis of cystic lymphangioma.
- On T1-weighted MR images, the cystic lesions appear hypointense relative to the surrounding viscera. T2-weighted images demonstrate multiloculated hyperintense areas that correspond to the dilated lymphatic spaces. The intervening septa appear as hypointense bands, corresponding to the presence of fibrous connective tissue.
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 References for Splenic lymphangioma
- Robert M. Abbott, Angela D. Levy, Nadine S. Aguilera, Luis Gorospe, and William M. Thompson. From the Archives of the AFIP: Primary Vascular Neoplasms of the Spleen: Radiologic-Pathologic Correlation. RadioGraphics 2004 24: 1137-1163.