PMC9681893_01
Computed tomography showed a large cystic mass.
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No enhancement was observed on contrast-enhanced CT, and the adjacent mesangial lymph nodes were slightly enlarged, suspecting a cyst lymphangioma ( Figure 1  ).
HE stains in (A) 40x view and (B) 200x view. Histology of lymphangioma. The cystic wall consisted of fibroconnective tissue accompanied by dilated lymphatic spaces and lymphoid cell aggregations in the endothelial lining of lymphatic vessels (A) H&E x40, (B) H&E x200.
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Histological analysis confirmed the final diagnosis of mesocolic cystic lymphangioma ( Figure 2 ).