Features of the popliteal lymph nodes seen on musculoskeletal MRI in a Western populationReport as inadecuate

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Skeletal Radiology

, Volume 40, Issue 8, pp 1041–1045

First Online: 20 January 2011Received: 04 October 2010Revised: 15 December 2010Accepted: 29 December 2010


ObjectiveTo asses the features and explore the clinical relevance of popliteal lymph nodes PLNs detected on MRI examination for different pathologies of the knee.

Materials and methodsA total of 150 knee MRIs, which were conducted for various indications, were retrospectively collected from the Picture Archiving and Communication System. Imaging planes in at least two orthogonal planes were mandatory, with a field of view extending 15 cm cranial from the joint space. The localization of the PLN was determined by measuring the distance of the lowest border of the PLN to the lowest border of the lateral femoral condyle. Clinical diagnosis was obtained from radiology reports and a statistician performed the statistical analysis.

ResultsThe patients were 70 males mean age 36.6 years range: 5–72 years and 80 females mean age 41.1 years range: 9–76 years. In 36.7% of the patients, a PLN was visible. The number of PLNs was negatively associated with age p < 0.001. The mean number of PLNs was 0.5 PLN per patient. The mean length, height, and width were respectively: 0.57 cm SD = 0.15, 0.84 cm SD = 0.26, and 0.71 cm SD = 0.23. The mean location was 5.8 cm SD = 1.61. No association was found between the presence of PLNs and internal derangement, inflammation, or cancer p = 0.368.

ConclusionsPLNs appearance is age related, with a higher frequency at a young age. The presence of the PLNs showed no relation to a specific clinical situation.

KeywordsKnee Popliteal lymph node Western population Magnetic resonance imaging Popliteal fossa  Download fulltext PDF

Author: Gijsbert Daniel Musters - Roeland P. Kleipool - Shandra Bipat - Mario Maas

Source: https://link.springer.com/

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