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Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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Macrosomia is the excessive growth of a foetus, with enlargement of all organs.

It can be detected on ultrasound scanning by measuring the abdominal circumference from the 30th week onwards.

Classically, macrosomic or large-for-dates foetuses are the result of poorly controlled diabetes mellitus although other rarer causes are documented.

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