Lying down adrenal sign

Dr Henry Knipe and Dr M Venkatesh et al.

The lying down adrenal sign or pancake adrenal gland refers to the flattened, pancake-like appearance of the adrenal gland in the renal fossa seen in association with absence of the ipsilateral kidney 1. It is described as the ‘lying down adrenal sign’ in reference to the appearance of the affected adrenal gland to be ‘lying down’ on the psoas muscle posteriorly 2.

Radiographic features


It is an important antenatal sonographic sign and occurs in the context of renal agenesis or renal ectopia 2.

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Article information

rID: 25432
System: Urogenital
Section: Signs, Anatomy
Tag: stub, cases, refs
Synonyms or Alternate Spellings:
  • Flattened adrenal sign
  • Pancake adrenal gland
  • Pancake adrenal
  • Pancake adrenal sign
  • Flat adrenal sign

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Cases and figures

  • Case 1
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