%0 Journal Article %T Preoperative Serum and Intra-platelet Serotonin in Prognosis: Useful or Useless? %A Bo Shu %A Chaoling Deng %A Jingyao Zhang %A Mimi Zhai %A Qinling Yang %A Sushun Liu %J Journal of Cancer %D 2018 %I Ivyspring International Publisher %R 10.7150/jca.27497 %X We read the recent Journal of Cancer article published by Aryal et al with great interest [1]. The author demonstrated that lower serum and intra-platelet (IP) 5-HT were closely related with higher recurrence rate after four weeks of operation. Additionally, serum and IP 5-HT could be used as the independent factors to predict the recurrence of hepatocellular carcinoma. However, the preoperative serum and IP 5-HT did not affect the recurrence in their study. The serum and IP 5-HT were even higher in non-recurrence patients before operation. %U http://www.jcancer.org/v09p3713.htm