Venezuelan President Hugo Chavez says he is returning to Cuba for another round of cancer treatment.

委内瑞拉总统乌戈·查韦斯将重返古巴进行另一轮癌症治疗。

Mr Chavez, 57, is having radiotherapy（放射疗法） after surgery to remove a second tumour¹ from his pelvic（骨盆的） area in February.

The Venezuelan leader said he was determined² to overcome cancer and win re-election in October.

The exact nature of his cancer has not been disclosed, fuelling rumours³ that his health may be worse than officially stated.

Mr Chavez had made clear that he would be "coming and going" between Venezuela and Cuba during his treatment.

Last year, the Venezuelan leader had surgery and four rounds of chemotherapy in Cuba, after a baseball-sized growth was detected in his pelvic region.

After the treatment he had said he was free from cancer, only to suffer a recurrence⁴ that required surgery in February.

In October's election, he is facing a strong challenge from opposition⁵ candidate Henrique Capriles Radonski.

Mr Chavez, in power since 1999, is seeking another six-year term to continue his programme of "socialist⁶ revolution".