Unmasking the Hidden Fetus: Introducing the Circled Delta Sign and Reversed Circled Delta Sign for Accurate Identification on Abdominal Radiography

Hsing-Hao Ho; Hsiu-Ting Tsai

doi:10.12659/AJCR.940689

25 August 2023: Articles

Unmasking the Hidden Fetus: Introducing the Circled Delta Sign and Reversed Circled Delta Sign for Accurate Identification on Abdominal Radiography

Mistake in diagnosis

Hsing-Hao Ho ^A* , Hsiu-Ting Tsai ^A

DOI: 10.12659/AJCR.940689

Am J Case Rep 2023; 24:e940689

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Figure 3. (A) The circled delta sign indicates a fetus with a vertex presentation on an abdominal radiograph. The outer circle represents the contour or mass effect of an enlarged uterus, whereas the circle and the curve of the inner delta represent the fetus’s skull and spine, respectively. (B) The reversed circled delta sign indicates a fetus with a breech presentation on an abdominal radiograph.

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Unmasking the Hidden Fetus: Introducing the Circled Delta Sign and Reversed Circled Delta Sign for Accurate Identification on Abdominal Radiography

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