3.2 Malformation Characteristics
Primarily lymphatic malformations, and lymphatic-venous malformations were noted in this study group.2 Eighteen (75%) were lymphatic malformations (LM), 20.8% (n=5) were mixed lymphatic-venous (LVM). The majority of the LM in our patient population were primarily macrocystic (n=18, 75%) with 20.8% (n=5) being mixed macro-microcystic and one (4.2%) primarily microcystic (Table 2).
One patient with presumed LVM based on imaging was ultimately found to have extra-osseus Ewing’s Sarcoma of the abdomen. CT and MRI were consistent with LVM of the mesentery with multiple macrocysts as well as microcystic features. However, fluid from the sclerotherapy procedure was sent for cytology and noted to be consistent with Ewing’s sarcoma.