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Year : 2015  |  Volume : 14  |  Issue : 1  |  Page : 47-50

Bone Scintigraphy Hot-Spot in Projection to Rib and Kidney: Role of Single Photon Emission Computer Tomography/Computer Tomography in Distinguishing a Urine Collection in Renal Calyx from a Metastasis to Rib

1 Department of Nuclear Medicine, Dr. Wladyslaw Bieganski Regional Specialist Hospital, Grudziadz; Department of Nuclear Medicine, Citomed, Torun, Poland
2 Department of Nuclear Medicine, Dr. Wladyslaw Bieganski Regional Specialist Hospital, Grudziadz, Poland
3 Department of Nuclear Medicine, Citomed, Torun, Poland

Correspondence Address:
Cyprian Swietaszczyk
Department of Nuclear Medicine, the Dr. Wladyslaw Bieganski Regional Specialist Hospital in Gudziadz, Rydygiera Street 15-17, 86-300 Grudziadz
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DOI: 10.4103/1450-1147.150546

PMID: 25709545

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On planar bone scintigrams, activity enhancement foci in projection to kidney and lower ribs can arise from the kidney, or from bone lesions. A differentiation based only on the exact location and shape of the hot spot can sometimes be misleading, resulting in a false qualification of a rib metastatic lesion as urine collection in the kidney or opposite. The authors illustrate the problem with three cases: In two patients, such a hot spot appeared to be the solitary metastatic focus; in one, highly suggestive for solitary metastatic focus, it was proven to be a urine collection.

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