B1346782

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Sure! Here's a differential diagnosis (DDx) for each of the findings you mentioned:

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1. Preauricular Skin Tags (Left ear ×2, Right ear ×1)

DDx:

• Isolated preauricular tag (most common, benign variant)

• Accessory tragus

• Branchial arch anomalies (first and second arch)

• Goldenhar syndrome (oculoauriculovertebral spectrum)

• Renal anomalies (e.g., renal dysplasia or agenesis — consider if other anomalies present)

• Hemifacial microsomia (if asymmetric facial structures)

🔍 Workup tip: Renal ultrasound only indicated if other anomalies are present (e.g., facial asymmetry, hearing loss, dysmorphism, or family history).

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2. Left Cheek Dimple / Possible Tract

DDx:

• Congenital dimple (benign variant) — especially if symmetric or familial

• Dermal sinus tract — may require imaging if midline or atypical

• First branchial cleft sinus

• Facial cleft or sinus

• Vascular anomaly or hemangioma with central depression

• Dermoid cyst/sinus — more common around periorbital/glabella, but possible on cheek

🔍 Red flags for deeper tract:

• Purulent discharge

• Associated swelling

• Midline location

• Skin changes or tethering

• Infection history

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Let me know if you'd like a pediatric pearl infographic on preauricular tags and cheek dimples — perfect for your weekly WhatsApp series!