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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
Case credit: Dr Ahmed Haroun.
- Youchum and Rowe’s: Essentials of Skeletal Radiology, 2005