Dysphagia Lusoria Cause Explained
Dysphagia lusoria is a type of difficulty in swallowing (dysphagia) that occurs in adults.
Aberrant Right Subclavian Artery Connection
The primary cause of dysphagia lusoria is an anatomical abnormality known as an aberrant right subclavian artery (also called arteria lusoria).
- This is a congenital vascular anomaly where the right subclavian artery arises abnormally from the aorta, often passing behind the esophagus.
- As this aberrant artery takes its course, it can compress the posterior wall of the esophagus.
- This chronic extrinsic compression leads to the characteristic swallowing difficulties experienced in dysphagia lusoria.
Comparison with Other Options
- Oesophageal atresia: A congenital condition where the esophagus is not fully formed, usually diagnosed in infants, not typically causing dysphagia lusoria in adults.
- Oesophageal web: A thin membrane in the esophagus, usually causing intermittent solid food dysphagia but not directly related to vascular compression.
- Corrosive stricture: Narrowing of the esophagus due to chemical injury, a different etiology altogether.
Therefore, the direct cause linked to the term 'dysphagia lusoria' is the aberrant artery.
Important Questions from Oesophagus
Which of the following statements are correct regarding Barrett's oesophagus?
1. It is a metaplastic change.
2. It is a risk factor for development of adenocarcinoma.
3. Ingestion of NSAIDs is the aetiological factor for its development.
4. Endoscopic mucosal resection is an effective treatment.
Select the answer using the code given below.
- Positron Emission Tomography (PET) used in Preoperative staging of Gastro Oesophageal tumours is to detect
- Positron Emission Tomography (PET) used in Preoperative staging of Gastro Oesophageal tumours is to detect
- What is true about the management of a corrosive injury of oesophagus?
An air fluid level with dilated oesophagus and "bird beak" appearance in a barium swallow is diagnostic of:
