TAIPEI, Taiwan (AP) _ Chiang Hsiao-wen, eldest son of the late President Chiang Ching-kuo, died of throat cancer today, a hospital said.

Chiang, 54, died at Taipei's Veterans General Hospital where he was admitted in September when doctors discovered a large tumor in his throat during a medical checkup, the hospital said in a statement.

Chiang was chairman of the state Taiwan Power Co. for two years before serving briefly as vice president of a petrochemical firm run by the ruling Nationalist Party. He resigned from the petrochemical company in 1970 when he suffered brain damage while being treated for diabetes. Since then he led a secluded life.

Chiang was born in the Soviet Union when his father was working at a metallurgical plant in the Urals. His father went to the Soviet Union in 1925 to study and later married a Russian, Faina, who lives in Taiwan.

The elder Chiang died in January 1988. He had two other sons and a daughter - Hsiao-wu, who heads the Taiwan mission in Singapore; businessman Hsiao-yung in Canada; and daughter Hsiao-chang, who lives in Berkeley, Calif.

Hospital officials said Chiang Hsiao-wen's wife, Nai-chin, his daughter, Yo-mei, and brother Hsiao-wu were at his bedside when he died.

Funeral services will be held April 25.