This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Splenectomy can lead to: September 2005 
Select and explain. 
A. Leucopenia, B. Thrombocytosis, C. Thrombocytopenia, D. Thrombocytopenia and leucopenia
B: Thrombocytosis
Answer: B: Thrombocytosis 
Explanation: Ans. B: Thrombocytosis Thrombocytosis sometimes occurs after spleen-removal surgery. Spleen holds approximately one-third of the blood platelets that are in the human body. So, it stands to reason that the removal of the spleen would prompt an increase in blood-platelet circulation throughout the body. The thrombocytosis condition can persist for upward of two weeks, increasing the patient's risk of life-threatening blood clots.