Open AccessBone 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
Author(s) -
Cyprian Świętaszczyk,
Stanisław Pilecki,
Katarzyna Kobus-Błachnio
Publication year - 2015
Publication title -
world journal of nuclear medicine
Language(s) - English
Resource type - Journals
eISSN - 1607-3312
pISSN - 1450-1147
DOI - 10.4103/1450-1147.150546
Subject(s) - medicine , kidney , tomography , focus (optics) , bone scintigraphy , radiology , bone metastasis , rib cage , single photon emission computed tomography , lesion , emission computed tomography , nuclear medicine , metastasis , pathology , anatomy , positron emission tomography , cancer , physics , optics
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.