Will cancer patients become the next terror threat?

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A Singapore cancer patient was held for four hours by immigration officials in the United States when they could not detect his fingerprints -- which had apparently disappeared because of a drug he was taking.

The incident, highlighted in the Annals of Oncology, was reported by the patient's doctor, Tan Eng Huat, who advised cancer patients taking this drug to carry a doctor's letter when traveling to the United States.

The drug, capecitabine, is commonly used to treat cancers in the head and neck, breast, stomach and colorectum.

One side-effect is chronic inflammation of the palms or soles of the feet and the skin can peel, bleed and develop ulcers or blisters -- or what is known as hand-foot syndrome.

"This can give rise to eradication of fingerprints with time," explained Tan, senior consultant in the medical oncology department at Singapore's National Cancer Center.

The patient, a 62-year-old man, had head and neck cancer that had spread but responded well to chemotherapy. To prevent the cancer from recurring, he was put on capecitabine.

http://news.yahoo.com/s/nm/20090527/od_nm/us_fingerprints