The juxtaphrenic peak sign refers to the peaked or tented appearance of a hemidiaphragm in the setting of lobar collapse. It is caused by retraction of the lower end of diaphragm at an inferior accessory fissure (commonest 1), major fissure or inferior pulmonary ligament. It is commonly seen in upper lobe collapse but may also be seen in middle lobe collapse.
This article is in need of some more references!
You can make a difference to Radiopaedia.org by adding some relevant ones.
- 1. Davis SD, Yankelevitz DF, Wand A et-al. Juxtaphrenic peak in upper and middle lobe volume loss: assessment with CT. Radiology. 1996;198 (1): 143-9. Radiology (citation) - Pubmed citation
- 2. Konen E, Rozenman J, Simansky DA et-al. Prevalence of the juxtaphrenic peak after upper lobectomy. AJR Am J Roentgenol. 2001;177 (4): 869-73. AJR Am J Roentgenol (citation) - Pubmed citation
- 3. Collins J, Stern EJ. Chest radiology, the essentials. Lippincott Williams & Wilkins. (2007) ISBN:0781763142. Read it at Google Books - Find it at Amazon
Synonyms & Alternative Spellings
|Synonyms or Alternative Spelling||Include in Listings?|
|Juxtaphrenic peak (JP)||✗|
|Juxta-phrenic peak sign||✗|