This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thromboembolism and Fat Embolism Syndrome, Subject name: Medicine
Pulmonary embolism is seen in all except? 
Select and explain. 
A. Fanconi anemia, B. Paroxysmal nocturnal hemoglobinuria, C. Oral contraception, D. Old age
A: Fanconi anemia
Answer: A: Fanconi anemia 
Explanation: Old age will lead to prolonged immobilisation, post-surgery and increases the possibility of deep vein thrombosis. Estrogen based OCPs increase thrombogenic potential. Pt with PNH suffer from thrombosis and interpreted as a very bad prognostic sign and the most common cause of death in PNH. Fanconi's Anemia - decreased production of all types of blood cells is there, a form of Aplastic anemias.