Suprasternal space contains all except one of the following structures
**Core Concept**
The suprasternal space, also known as the retrosternal space or the space of Burns, is a fascial space located in the neck. It is a potential space that can be involved in various pathological conditions, including infections and hemorrhages. The suprasternal space is bounded by the anterior border of the pretracheal fascia, the posterior surface of the sternum, and the anterior surfaces of the clavicles and the first ribs.
**Why the Correct Answer is Right**
The structures that are typically found in the suprasternal space include the thyroid gland, the parathyroid glands, the trachea, the esophagus, the thoracic duct, the left brachiocephalic vein, and the lymph nodes. These structures are located within the fascial space due to their anatomical proximity to the sternum and the first ribs. The suprasternal space is a common site for infections, such as Ludwig's angina, which can lead to swelling and compression of the surrounding structures.
**Why Each Wrong Option is Incorrect**
**Option A:** The subclavian artery is not typically found within the suprasternal space, but rather in the subclavian groove on the first rib. It is located more laterally and is not part of the structures that are usually found in the suprasternal space.
**Option B:** The right brachiocephalic vein is generally located on the right side of the mediastinum and is not typically found in the suprasternal space. It is part of the venous drainage of the right arm and is not usually associated with the structures found in the suprasternal space.
**Option C:** The right brachiocephalic vein is not the correct answer, but another option is required.
**Option D:** The left brachiocephalic vein is typically found in the suprasternal space, along with the thoracic duct and the left common carotid artery.
**Clinical Pearl / High-Yield Fact**
The suprasternal space is a potential space that can be involved in various pathological conditions, including infections, hemorrhages, and neoplasms. It is essential to be aware of the structures that are typically found in this space to accurately diagnose and manage conditions that affect this area.
**Correct Answer:** B.