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Although gadolinium agents are useful for patients with renal impairment , in patients with severe kidney failure requiring dialysis , there is a risk of a rare but serious illness called nephrogenic systemic fibrosis ( NSF ) or nephrogenic fibrosing dermopathy , that is linked to the use of MRI contrast agents containing gadolinium .
 disease: kidney failure; disease: nephrogenic systemic fibrosis
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 disease: kidney failure; disease: nephrogenic systemic fibrosis