Unilateral renal agenesis

Jennifer S. Hernandez, Jodi S. Dashe

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Unilateral renal agenesis has a birth prevalence of approximately 1:1000 to 1:2000, but it is often undetected prenatally. Sonographically, one kidney cannot be visualized in either the renal fossa or the pelvis, and the adrenal flattens and fills the renal fossa-the “lying-down” adrenal sign. Color Doppler imaging of the descending aorta reveals just one renal artery. The solitary kidney often develops compensatory hypertrophy. Unilateral renal agenesis is associated with other anomalies, particularly genitourinary abnormalities, and it is a component of several genetic syndromes. Therefore, targeted sonography is indicated, and amniocentesis may be offered. Affected individuals are usually asymptomatic; however, they are at increased risk to develop hypertension and renal insufficiency.

Original languageEnglish (US)
Title of host publicationObstetric Imaging
Subtitle of host publicationFetal Diagnosis and Care, 2nd Edition
PublisherElsevier
Pages43-45.e1
ISBN (Electronic)9780323445481
DOIs
StatePublished - Jan 1 2017

Keywords

  • Lying-down adrenal sign
  • Renal fossa
  • Solitary kidney

ASJC Scopus subject areas

  • Medicine(all)

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  • Cite this

    Hernandez, J. S., & Dashe, J. S. (2017). Unilateral renal agenesis. In Obstetric Imaging: Fetal Diagnosis and Care, 2nd Edition (pp. 43-45.e1). Elsevier. https://doi.org/10.1016/B978-0-323-44548-1.00011-5