A case of tubulocystic carcinoma of the kidney with aggressive features |
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| Authors: | Yoko Maeda Keisuke Goto Yukiko Honda Naoto Kuroda Kazuhiro Sentani Wataru Yasui Tetsutaro Hayashi Jun Teishima Akio Matsubara Yuko Nakamura Naoyuki Toyota Makoto Iida Kazuo Awai |
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| Affiliation: | 1.Department of Diagnostic Radiology, Institute of Biomedical and Health Sciences,Hiroshima University,Hiroshima,Japan;2.Department of Molecular Pathology, Institute of Biomedical and Health Sciences,Hiroshima University,Hiroshima,Japan;3.Department of Diagnostic Pathology,Kochi Red Cross Hospital,Kochi,Japan;4.Department of Urology, Institute of Biomedical and Health Sciences,Hiroshima University,Hiroshima,Japan;5.Molecular Imaging Program, Center for Cancer Research, National Cancer Institute,National Institutes of Health,Bethesda,USA;6.Department of Diagnostic Radiology,National Hospital Organization Kure Medical Center,Hiroshima,Japan |
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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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