Prominent sub-endplate densities at multiple contiguous levels produce an alternating dense-lucent-dense appearance simulating the transverse bands of rugby sweater (rugger-jersey spine). This pattern is distinctive for hyperparathyroidism (like this case has secondary hyperparathyroidism due to chronic renal failure) though, there is similarity to some cases of osteopetrosis.


Reference: Youchum and Rowe’s: Essentials of Skeletal Radiology, 2005
Credit: Dr Ahmed Haroun
http://www.radpod.org

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