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HOME > J Pathol Transl Med > Volume 38(3); 2004 > Article
Case Report Carcinoid Tumor Arising from A Normal Kidney: A Case Report.
Seo Young Sohn, Han seong Kim, Mee Joo, Min Kyung Kim, Sung Hye Park
Journal of Pathology and Translational Medicine 2004;38(3):196-199
DOI: https://doi.org/
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1Department of Pathology, Inje University College of Medicine, Goyang, Korea. hs-kim@ilsanpaik.ac.kr
2Department of Pathology, Seoul National University College of Medicine, Seoul, Korea.

Primary carcinoid tumor of the kidney is a very rare disease. Until now, only 41 cases have been reported worldwide, and nine of these arose in a horseshoe kidney. In Korea, 3 cases have been reported to date, and all of these arose in a horseshoe kidney. We present a case of primary carcinoid tumor occurring in a normal kidney of a 45 year old man. A tumor was incidentally found close to the hilum of the left kidney. Histologically, the tumor exhibited trabecular and ribbon-like pattern of cuboidal or columnar cells. Mitotic activity was rarely seen. The tumor cells were positive for synaptophysin and chromogranin A. Numerous dense-core neurosecretary granules were observed by the electron microscopic examination. To our knowledge, the present case is the first report of primary renal carcinoid tumor arising in a normal kidney in Korea.

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