A prominent Chinese journalist, who was imprisoned on spying charges that he denies, is caught in a deadlock with the authorities in Beijing after they rebuffed his request for medical parole to remove a potentially cancerous lung tumor, his son said on Thursday. The journalist, Dong Yuyu, 64, was convicted of espionage and sentenced to seven years in prison in 2024. He was an editor for a Chinese Communist Party-run newspaper, Guangming Daily, but in past years wrote essays that called for political liberalization. He mixed with foreign journalists and…