Question

A child is born with an absent finger. What is the likely diagnosis?

• A. Amniotic band syndrome
• B. Arthrogryposis multiplex
• C. Polyhydramnios
• D. Congenital constriction ring

Hint:

Absent digits or limb amputations at birth strongly suggest amniotic band syndrome.

Answer 1

The Correct Option is A

Concept: Amniotic band syndrome occurs when fibrous amniotic bands entangle fetal parts. This can cause constriction rings, limb deformities, amputations, or absent digits.

Step 1: Identify the congenital defect.
The child has an absent finger. A missing digit at birth suggests an intrauterine amputation-like defect.

Step 2: Understand the cause.
In amniotic band syndrome, fibrous strands can wrap around fingers, toes, or limbs. This may cut off blood supply and cause: \[ \text{Constriction ring or amputation of digits} \]

Step 3: Select the likely diagnosis.
Since the main feature is an absent finger, the most likely diagnosis is: \[ \text{Amniotic band syndrome} \] Therefore, the correct answer is Amniotic band syndrome.