Which of the following is not a contributing factor in thoracic outlet syndrome?
Correct Answer: Tumor arising from the middle lobe of lung
Description: Ans. A. Tumor arising from the middle lobe of lungTumors arising from the upper lobe of lung contributes to the thoracic outlet syndrome and not the middle lobe tumors.The contributing factors to thoracic outlet syndrome may be classified as dynamic and static.Dynamic cause is a fully abducting arm, which pulls the artery up by 180 degrees, causing compression in the retrovascular space.Static factors:* Increased muscle bulk* Decreased muscle bulk* Cervical rib* Malunion or nonunion of fracture clavicle* Arteriosclerosis* Anomalies of the first thoracic ribTumors arising from the upper lobe of the lung, cervico-thoracic scoliosis, and abnormal variations of the scalene muscles are some of the miscellaneous causes.Thoracic Outlet Syndrome
Category:
Orthopaedics
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now