Juxtaphrenic peak sign

Dr Andrew Dixon et al.

The juxtaphrenic peak sign or diaphragmatic tenting refers to the peaked or tented appearance of a hemidiaphragm which can occur in the setting of lobar collapse. It is caused by retraction of the lower end of diaphragm at an inferior accessory fissure (most common 1), major fissure or inferior pulmonary ligament. It is commonly seen in upper lobe collapse but may also be seen in middle lobe collapse

Chest x-ray
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Article information

rID: 18810
System: Chest
Section: Signs
Tags: stub, cases
Synonyms or Alternate Spellings:
  • Juxtaphrenic peak
  • Juxta-phrenic peak sign
  • Juxtaphrenic peak (JP)
  • Diaphragmatic tenting
  • Tenting of the diaphragm

Cases and figures

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    Luftsichel sign
    Case 1: in left upper collapse
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    Case 2 : on right
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    Case 3: on right with RUL collapse
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