CHICAGO, Sept 4 (Reuters) - In a review of breast milk safety, a pediatricians' group said on Tuesday that mothers with silicone breast implants can safely breast-feed though some prescription drugs might taint their milk.

The American Academy of Pediatrics committee's report said it was not possible to predict the long-term effects on breast-feeding infants of anti-anxiety drugs, antidepressants and some other drugs that usually appear in low concentrations in the breast milk of mothers taking the prescription drugs.

"Because these drugs affect neurotransmitter function in the developing central nervous system, it may not be possible to predict long-term neurodevelopmental effects," the report cautioned.

Mothers who breast-feed can take precautions such as taking the safest drug possible, taking the medication just after breast-feeding, or having the infant's blood checked for drug concentrations.

Based on previous studies, the report said breast implants present little or no threat to breast-feeding infants, although one study noted a problem with some babies' esophageal function. Up to 1 million American women have breast implants containing silicone.

The report, published in the journal Pediatrics, was a summary of several previously-done studies.

The report noted that substances similar to silicone are found in cow's milk, infant formula and in the anticolic compound simethicone, with no ill effects.