Question
The most common cause of SVC syndrome is ‑
| A. |
Thrombosis |
| B. |
Extrinsic compression |
| C. |
Mediastinal lymphoma |
| D. |
Teratoma |
Show Answer
|
Correct Answer » B Explanation |
 |
Explanation:
Correct Answer:
– Extrinsic compression is the most common cause of SVC syndrome.
– Often results from malignancies such as lung cancer or metastatic tumors.
Incorrect Options:
A. Thrombosis – Usually secondary to indwelling catheters or pacemakers.
C. Mediastinal lymphoma – A cause, but less common than extrinsic compression by other tumors.
D. Teratoma – Rare cause. More common causes include malignancies like lung cancer.
High-Yield:
– Most SVC syndrome cases are due to malignancy, especially lung cancer.
– Emergency SVC syndrome treatment can involve radiotherapy or stenting.