LIMA, May 20 (Xinhua) -- Former Peruvian president Alberto Fujimori has been diagnosed with a pre-cancerous leukoplakia lesion, and may need a surgery to have it removed, Fujimori's oldest daughter Keiko Fujimori said Tuesday.

    Keiko Fujimori said her father's doctors have confirmed he has "leukoplakia," a pre-cancerous lesion that develops on the tongue or the inside of the cheek.

    She said it has been three weeks since Fujimori started feeling pain in the same place where he had surgery ten years ago.

    Keiko Fujimori, leader of the opposition Alliance for the Future (AF) and member of the Peruvian Congress, said her father was taking medicine to reduce the pain.

    Nevertheless, the pain was not relieved and it was very probable that Fujimori would undergo a surgery and check if it was benign or malignant, she said.

    The congresswoman had appealed to President Alan Garcia his father be indicted under an ordinary regimen and not under the current conditions.

    "My father will still be facing the trial, but within a just cause and his medical condition should be respected. We are not asking for any favor, only justice," she said.

    The congresswoman also revealed that the president of the Supreme Court of Justice (CSJ), Cesar San Martin, who is in charge of the open trial against Fujimori for crimes against humankind, had requested a special medical team be set up to check on his health conditions.

    Fujimori, who has attended 60 hearings since last December, did not show many signs of illness, except falling asleep on several occasions.

    The ex-president is detained in the Special Operations Headquarters of the National Police of Peru near downtown Lima, where his trials were conducted.