Lambda sign of sarcoidosis

Case contributed by Craig Hacking
Diagnosis certain

Presentation

Known sarcoidosis.

Patient Data

Age: 25 years
Gender: Male
Nuclear medicine

Gallium-67 scan showing mild tracer uptake in the bilateral hilar nodes and the paratracheal nodes - the lambda sign of sarcoidosis.

Annotated image

Lambda sign.

x-ray

Heart size is within normal limits. Extensive mediastinal and hilar lymphadenopathy. Lungs and pleural spaces are clear. Bones are normal.

Case Discussion

This case has some classic signs of sarcoidosis:

  • Lambda and panda signs on Gallium-67 nuclear scan
  • Garland triad (1-2-3 sign) on CXR

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.