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A case of tubulocystic carcinoma of the kidney with aggressive features

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Abstract

Tubulocystic carcinoma of the kidney is rare and typically indolent. Our case involved an aggressive tubulocystic carcinoma as well as the radiological confirmation of its relation to papillary renal cell carcinoma. A 46-year-old male presented with renal multiloculated cysts with a solid part. On computed tomography and magnetic resonance imaging, the solid part showed the characteristics of papillary renal cell carcinoma. Contrast enhancement of the solid part was fluffy and sparse because of the coexistence of cysts. Perirenal fat invasion resulted in exophytic cysts, and renal-hilar cystic lymph node metastasis existed. The histopathological diagnosis was tubulocystic carcinoma associated with areas of papillary renal cell carcinoma and poorly differentiated carcinoma with metastasis. Our case suggests that the solid part enhancement of tubulocystic carcinoma tends to be fluffy and sparse, and exophytic cysts and cystic lymph nodes may show radiologically aggressive findings.

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Abbreviations

TCK:

Tubulocystic carcinoma of the kidney

CT:

Computed tomography

MRI:

Magnetic resonance imaging

pRCC:

Papillary renal cell carcinoma

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Acknowledgments

The authors thank Dr. Toru Higaki (Department of Diagnostic Radiology, Institute of Biomedical and Health Sciences, Hiroshima University) for technical assistant.

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Correspondence to Yukiko Honda.

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Maeda, Y., Goto, K., Honda, Y. et al. A case of tubulocystic carcinoma of the kidney with aggressive features. Jpn J Radiol 34, 307–311 (2016). https://doi.org/10.1007/s11604-016-0525-7

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  • DOI: https://doi.org/10.1007/s11604-016-0525-7

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