TABLE 1.

Patient Baseline Characteristics

Patient	Sex	Age at Diagnosis	Phenotype	Location	Symptoms/Signs	Previous Interventions
Pediatric LMs
1	M	Prenatal	Mixed macrocystic and microcystic LMs	Retroperitoneum	Edema	Debulking
				Pelvis	Lymphatic drainage
				Perineum	Bleeding
				Left lower extremity	Sepsis
					Nonambulatory status
2	M	5 y	Generalized lymphatic anomaly	Diffuse	Edema	Diuretics
					Pleural/pericardial effusions Sepsis	Debulking
3	M	11 y	Lymphedema	Left foot	Lymphedema	None
					Recurrent cellulitis
KTS
4	F	Prenatal	Capillary, venous, and LMs	Right lower extremity Peritoneum	Edema	Sclerotherapy
					Lymphatic drainage
					Bleeding
					Sepsis
5	M	At birth	Capillary, venous, and LMs	Left lower extremity Perineum	Edema in toes	Debulking
					Leakage from old incisions	Embolization of vein of Servelle
					Pain
Prenatal LMs
6	F	Prenatal	Mixed macrocystic and microcystic LMs	Cervicofacial	Prenatal radiographic finding	None
					Concern for airway compromise

F, female; M, male.