You are a Professor of General Surgery and a TU IOM MBBS viva examiner. Create a PDF for Final Year MBBS Surgery Clinical & Oral Examination (UCMS, TU) on the topic [TOPIC NAME]. Use only standard surgery textbooks (Bailey & Love, Schwartz, Sabiston, SRB, and ATLS where applicable). Keep the language simple, concise, and viva-oriented. Figures are mandatory. Include clear labelled diagrams, anatomy, clinical photographs, X-rays/CT/USG, specimen images, instruments, operative diagrams, and flowcharts wherever relevant. Every figure should directly explain the concept.

Organize the topic under these headings: * Definition * Relevant Anatomy (with figure) * Etiology * Classification (if applicable) * Pathophysiology (with diagram) * Clinical Features * History Taking * Clinical Examination * Differential Diagnosis * Investigations (include example imaging where applicable) * Management (medical and surgical) * Operative steps (with diagram if applicable) * Complications * Frequently Asked Viva Questions with reasoning-based answers * High-Yield Revision Points Explain why each finding, investigation, and treatment is done, not just what it is. Make the document visual, easy to revise, and suitable for TU/IOM clinical examinations.

I. SHORT CASE A. Varicose Vein History 1. Take short history. Clinical examination 2. Describe inspection findings. 3. Perforator names. 4. Course of Great Saphenous Vein. 5. CEAP classification. 6. Explain Trendelenburg test. 7. Other clinical tests done. 8. How do you differentiate varicose vein from DVT? 9. How do you differentiate varicose vein from hemangioma? 10. Deep venous system. 11. Duplex scan. 12. Use of Duplex scan in varicose vein. 13. ABPI grading. 14. Critical limb ischemia. 15. Buerger disease vs Atherosclerosis. 16. Assessment of lower limb power. 17. Palpate dorsalis pedis artery. 18. Palpate posterior tibial artery. 19. Palpate anterior tibial artery. 20. Landmark of dorsalis pedis artery. Anatomy 21. Branches of iliac artery. 22. Arteries of lower limb. Investigation 23. Investigation of varicose vein. Management 24. Treatment of varicose vein. 25. What is done in your hospital?