This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Spleen, Subject name: Surgery
Most common cause of isolated splenic metastasis is: 
Select and explain. 
A. Carcinoma pancreas, B. Carcinoma stomach, C. Carcinoma ovary, D. Carcinoma cervix
C: Carcinoma ovary
Answer: C: Carcinoma ovary 
Explanation: Causes of isolated splenic metastasis: Carcinoma Ovary (27%) > Colorectal carcinoma (26%) > Uterine cancer (17%) MC primary for metastasis of spleen: Malignant melanoma (30-50%) > Ca Breast (21%) > Ca lung (18%)