VMA mass screening program of neuroblastoma for infants in Nagoya City, Japan.

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Abstract
In Nagoya City, Japan, VMA mass screening for detection of neuroblastoma has been performed since 1977. Filter paper strips wetted with urine are mailed to a central laboratory. Positive tests are followed up by more definitive testing. Of the 20,053 urine samples of 6-month-old infants tested, January 1977 to March 1983, five asymptomatic infants with neuroblastoma have been discovered. All have been treated and are alive as of January 1984.