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Mucinous cystadenoma with malignant transformation arising in the renal pelvis
Author(s) -
Toyoda Hiroshi,
Mabuchi Tat,
Fukuda Kousel
Publication year - 1997
Publication title -
pathology international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.73
H-Index - 74
eISSN - 1440-1827
pISSN - 1320-5463
DOI - 10.1111/j.1440-1827.1997.tb03736.x
Subject(s) - renal pelvis , mucinous cystadenoma , medicine , pathology , cystadenoma , atypia , adenocarcinoma , cyst , malignancy , urachus , tubular adenoma , kidney , cancer , colorectal cancer , ovary , colonoscopy , pancreas
Mucinous cystadenoma with malignant transformation occupying the lower half portion al the right renal peivis in a 64 year‐old Japanaese man was rocorded. The patient had recent dysuria but no clinical history of pyelonephritis or urollthiasis. Under the clinical diagnosis of unusual renal cyst, the right total nephrectomy was pertormed. Grossly, the cystic tumor, 5 cm across, formed a mondocular lumen filled with mucins and showed no direct communication with the renal peivis Inside. Microscopically, the epithetial lining was characterbad by a single layer of benign much producing columnar cells that scatered foci of non‐invasive papillary projections with cell Stratifiation and nuclear atypla suggestive of malignancy. Although there was non‐specific chronic pyelttis, no pyeittis cystica et glandularis was encountered. Of circa 60 glandular neoplasms arbing In the renal peivis reported previously, adenomas are only five Including two mucinous cystadenomas, while the remainder are adenocarcinomas. The histological findings of mucinous cystadenoma in the present case may represent the process of a transition from adenoma to adenocarcinoma. The result suggests the possibility that adenoma‐carcinoma sequence may exist among the glandular neoplasms arising in the renal peivis. The histogenesis was unciarffled.