Which of the following is a recognized left atrial appendage shape?

• A. Zigzag
• B. Spherical blob
• C. Pear-shaped
• D. Chicken wing

Answer: (D)

LAA morphology is described on imaging with a few common patterns, and recognizing these shapes helps with planning and risk assessment. The chicken wing shape is a recognized left atrial appendage pattern, characterized by an abrupt bend in the dominant lobe that gives a curved, sharp-angled appearance. It’s one of the standard morphologies described in imaging studies (alongside windsock, cauliflower, and cactus). The other terms listed aren’t established descriptors for LAA anatomy in routine practice, so the chicken wing designation is the correct recognized shape.