PEDIATRICS Vol. 81 No. 4 April 1988, pp. 555-558
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Fetal Ear Length

Jason C. Birnholz MD1 and Elaine E. Farrell MD1

1 From the Department of Diagnostic Radiology Rush-Presbyterian-St Luke's Medical Center and Rush Medical College, Chicago, and the Department of Pediatrics, Division of Neonatology, Northwestern Medical Center and Evanston Hospital, Evanston, Illinois

A prenatal standard for ear length was developed from ultrasonic images of 180 normal subjects. Length increased from about 6 mm at 15 weeks to 33 mm at term and was well fit by linear regression (r2 = .96). Short ears (ge1.5 SD below gestational age average) were associated strongly, and specifically, with chromosomal disorders.

Key Words: ear length • chromosome • fetus

Submitted on April 18, 1986
Accepted on June 18, 1987




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[Abstract] [Full Text] [PDF]