{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T21:03:35Z","timestamp":1791925415356,"version":"4.3.4"},"reference-count":16,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2015,12,8]],"date-time":"2015-12-08T00:00:00Z","timestamp":1449532800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Pathology International"],"published-print":{"date-parts":[[2016,1]]},"abstract":"<jats:p>Carcinoid tumors are well documented in the pulmonary and gastrointestinal systems, but very rare in the urinary tract, especially in the renal pelvis. We report on a 60\u2010year\u2010old female patient who presented with left flank pain and fever. Abdominal computed tomography demonstrated a heterogeneously enhancing mass in the left renal pelvis and a stone at the left proximal ureter. Multiple parenchymal lesions were also observed, which were identified as uneven caliectasis displaying air\u2010fluid levels and renal parenchymal atrophy. The patient underwent simple nephro\u2010ureterectomy. Macroscopically, a polypoid mass was observed in the renal pelvis. Microscopically, the tumor revealed acinar, tubular, and solid pattern and was composed of small, monotonous and hyperchromatic cells. Lining epithelia in renal pelvis and ureter revealed columnar epithelia with dysplastic change. The tumor cells were positive for chromogranin <jats:styled-content style=\"fixed-case\">A<\/jats:styled-content>, synaptophysin, <jats:styled-content style=\"fixed-case\">CD56<\/jats:styled-content>, and focally positive for cytokeratin. Immunohistochemical staining of synaptophysin and chromogranin A highlighted the neuroendocrine cells in the columnar epithelium. <jats:styled-content style=\"fixed-case\">K<\/jats:styled-content>i\u201067 (1:50; <jats:styled-content style=\"fixed-case\">MIB<\/jats:styled-content>\u20101) labeling index was less than 1% in the area with highest uptake. We report here a case of carcinoid tumor of the renal pelvis that was associated with adjacent dysplastic columnar epithelium.<\/jats:p>","DOI":"10.1111\/pin.12367","type":"journal-article","created":{"date-parts":[[2015,12,9]],"date-time":"2015-12-09T05:38:10Z","timestamp":1449639490000},"page":"42-46","source":"Crossref","is-referenced-by-count":5,"title":["Carcinoid tumor associated with adjacent dysplastic columnar epithelium in the renal pelvis: A case report and literature review"],"prefix":"10.1111","volume":"66","author":[{"given":"Sung Sun","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Pathology Chonnam National University Medical School  Gwangju Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chan","family":"Choi","sequence":"additional","affiliation":[{"name":"Department of Pathology Chonnam National University Medical School  Gwangju Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Taek Won","family":"Kang","sequence":"additional","affiliation":[{"name":"Department of Urology Chonnam National University Medical School  Gwangju Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yoo Duk","family":"Choi","sequence":"additional","affiliation":[{"name":"Department of Pathology Chonnam National University Medical School  Gwangju Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2015,12,8]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"crossref","first-page":"442","DOI":"10.1097\/PAS.0b013e318208f96a","article-title":"Primary carcinoid tumors of the urinary bladder and prostatic urethra: A clinicopathologic study of 6 cases","volume":"35","author":"Chen YB","year":"2011","journal-title":"Am J Surg Pathol"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-5347(05)65690-X"},{"key":"e_1_2_6_4_1","first-page":"269","article-title":"Primary carcinoid of the renal pelvis","volume":"13","author":"Ji X","year":"1994","journal-title":"J Environ Pathol Toxicol Oncol"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/dc.2840120416"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1440-1827.2007.02188.x"},{"key":"e_1_2_6_7_1","doi-asserted-by":"crossref","first-page":"1693","DOI":"10.5858\/2006-130-1693-CTOTUT","article-title":"Carcinoid tumors of the urinary tract and prostate","volume":"130","author":"Murali R","year":"2006","journal-title":"Arch Pathol Lab Med"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1440-1827.2003.01469.x"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11255-006-9031-7"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.14694\/EdBook_AM.2015.35.92"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.3346\/jkms.2001.16.6.796"},{"key":"e_1_2_6_12_1","first-page":"571","article-title":"Multicentric small cell neuroendocrine neoplasm of the renal pelvis and ureter with concomitant focal high\u2010grade urothelial carcinoma of the ureter: A case report. 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