Physiology & Biochemistry · single question
Treacher Collins syndrome is BEST identified by which feature?
Show answer and explanation
Correct answer: D. Malformed or absent ears (microtia/anotia)
Treacher Collins syndrome features bilateral ear malformations (microtia/anotia), downward-slanting palpebral fissures, coloboma, and mandibular/zygomatic hypoplasia.
- A. ❌ Multiple OKCs are a feature of Gorlin syndrome.
- B. ❌ Premature cranial suture closure characterizes Crouzon syndrome.
- C. ❌ Midface deficiency without intellectual disability describes Crouzon syndrome.
- D. ✅ CORRECT – Ear malformation (microtia) is a hallmark of Treacher Collins.
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