Infantile hemangioma precursor lesions on day of life 1: A Mayo Clinic retrospective case series.

Improving recognition of precursor lesions increases diagnostic accuracy, decreasing unnecessary workup. This, in turn, allows dermatologists to confidently employ close follow-up management strategies. Additionally, in cases of extensive involvement, recognition of the precursor lesion allows for expedited investigation for syndromes such as PHACE (posterior fossa malformations, hemangioma, arterial anomalies, coarctation of the aorta/cardiac defects, and eye abnormalities) and LUMBAR (lower body IH, urogential anomalies, ulceration, myelopathy, bony deformities, anorectal malformations, arterial anomalies, and renal anomalies).