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
Commonest carcinoma that can cause splenic metastasis is which of the following? 
Select and explain. 
A. Ca. Pancreas, B. Ca. Stomach, C. Ca. Ovary, D. Ca. Cervix
C: Ca. Ovary
Answer: C: Ca. Ovary 
Explanation: Although isolated metastasis to spleen is rare, studies found the most common primary neoplasms with splenic metastasis to be gynecologic (61%), with majority being ovarian, colorectal (15%), lung (9%), and stomach (4%). Ref: CT and MRI of the Abdomen and Pelvis: A Teaching File edited by Pablo R. Ros, Koenraad J. Moele, 2006, Page 218.