Renal malformations have an incidence of ~1-3/100 live births. These are the most common minor external ear abnormalities and are often noted incidentally on physical examination. Isolated preauricular tags (IPT) have an incidence of ~5-10/1000 live births. Edith Potter described renal agenesis along with flattened ears (i.e. Later the attending physician was able to search the literature and find several papers that supported non-evaluation of simple isolated preauricular abnormalities.
The attending physician discussed with her that the infant had no other risk factors and therefore the risk of renal disease was basically the same as the general population. The resident seeing the patient was concerned about the skin tag and wanted to order a renal ultrasound because of potential renal abnormalities. The diagnosis of a healthy newborn with an isolated preauricular skin tag was made. The rest of his examination was negative. HEENT showed a left 2 mm preauricular skin tag without a pit, and a normal shape to both ears.
The pertinent physical exam showed an alert male with weight of 3.68 kg (50%), length of 49 cm (25%) and head circumference of 35.5 cm (65%). The family history was positive for Parkinson’s disease in a paternal great-grandmother. He had passed a newborn screening hearing evaluation during his hospitalization.
NEEBORN VAGINAL SKIN TAGS FULL
The past medical history showed a full term male born by vaginal delivery without complications. He was urinating and stooling well and had no jaundice concerns. He was breastfeeding well and gaining 21 grams/day since his 1 week examination. A 2-week-old male came to clinic for his well child check.
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