"Only about 1% of all lymphatic malformations occur in the retroperitoneal space. Abdominal lymphatic malformations, in total estimated in ~ 5% of cases, tend to happen more frequently in the mesentery, followed by the omentum, mesocolon, and, then retroperitoneum 1,3."
"Lymphatic malformations are well-defined multilocular cystic masses with typically homogeneous fluid content. Calcifications are uncommon. Post-contrast enhancement of the cyst wall and septa may be seen 1,3,5. It is important to remember that they can cross fascial planes and involve multiple compartments 3."
"These malformations were formerly called lymphangiomas. This expression is out-of-date according to the 2018-classification of ISSVA 4."
"Only about 1% of all lymphatic malformations occur in the retroperitoneal space. Abdominal lymphatic malformations, in total estimated in ~ 5% of cases, tend to happen more frequently in the mesentery, followed by the omentum, mesocolon, and, then retroperitoneum 1,3."