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Macrosomia

Macrosomia refers to a very large body size. It is often used to describe an oversized fetus.

Information

The most common cause of macrosomia is diabetes in the mother. Macrosomia can lead to injury during birth and a greater chance of a cesarean delivery (C-section).

Images

References

Blickstein I, Perlman S, Hazon Y, Shinwell ES. Pregnancy complicated by diabetes mellitus. In: Martin RJ, Fanaroff AA, Walsh MC, eds. Fanaroff and Martin's Neonatal-Perinatal Medicine. 11th ed. Philadelphia, PA: Elsevier; 2020:chap 18.

Richards DS. Obstetric ultrasound: imaging, dating, growth, and anomaly. In: Landon MB, Galan HL, Jauniaux ERM, et al, eds. Gabbe's Obstetrics: Normal and Problem Pregnancies. 8th ed. Philadelphia, PA: Elsevier; 2021:chap 9.

Simmons R. Abnormalities of fetal growth. In: Gleason CA, Juul SE, eds. Avery's Diseases of the Newborn. 10th ed. Philadelphia, PA: Elsevier; 2018:chap 6.

Review Date 10/2/2019

Updated by: Neil K. Kaneshiro, MD, MHA, Clinical Professor of Pediatrics, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.