Retained surgical sponges: CT and US appearance.

@article{Kokubo1987RetainedSS,
  title={Retained surgical sponges: CT and US appearance.},
  author={Takashi Kokubo and Yuji Itai and Kuni Ohtomo and K Yoshikawa and M. Iio and Yutaka Atomi},
  journal={Radiology},
  year={1987},
  volume={165 2},
  pages={
          415-8
        }
}
The computed tomographic (CT) and ultrasonographic (US) appearances of retained surgical sponges are described. In each case, the presence of a sponge was confirmed at repeat operation. CT examinations were performed in nine patients. In six cases, a low-density mass was demonstrated; in two cases, a complex mass with areas of both low and medium density was seen. The remaining case was a high-density mass. After intravenous administration of contrast material, dense and prolonged enhancement… 
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