Clinical overlap of PHACE and LUMBAR syndromes.

Segmental infantile hemangiomas affecting the upper body are associated with PHACE(S) (Posterior fossa anomalies, Hemangioma, Arterial anomalies, Cardiac anomalies, Eye anomalies, and Sternal defects) syndrome, whereas segmental infantile hemangiomas affecting the lower body are the cutaneous hallmark of LUMBAR (Lower body hemangioma and other skin defects, Urogenital anomalies and Ulceration, Myelopathy, Bony deformities, Anorectal malformations and Arterial anomalies, and Renal anomalies) syndrome. We present two individuals with concurrent features of both PHACE and LUMBAR syndromes demonstrating an overlap phenotype. The overlapping features seen in our patients suggest that these syndromes occur on the same phenotypic spectrum and derive from a common embryonic pathophysiology.