13 year old male with history of Proteus and lymphatic-venous malformation.EXAMINATION: CT of the right lower extremity from the lower pelvis to the ankles after IV administration of 80 cc Omnipaque 300. 1/29/16. There is diffuse subcutaneous reticulation within the lateral aspect of the left lower leg and bilateral right greater than left thighs extending into the gluteal soft tissues. There is a large soft tissue lesion located medial to the biceps femoris spanning a craniocaudal distance of 10.5 cm with maximal axial dimensions of 3.6 x 1.7 cm likely representing a lymphatic venous malformation. The underlying osseous structures are unremarkable. No hip or knee joint effusions. The femoral heads are directed into well-formed acetabula.The known vascular malformations within the pelvis are better evaluated on recent MRI, however appear stable in size. There is diffuse reticulation and skin thickening of the scrotum. There is a well-circumscribed fluid density lesion within the right anterior inferior pelvis extending into the right inguinal canal measuring 5.4 x 2.5 cm
Extensive venous lymphatic malformations as above.