A male case of primary retroperitoneal mucinous cystadenoma: A diagnostic dilemma

Nobuhiro Fujita, Akihiro Nishie, Yoshiki Asayama, Keijiro Kiyoshima, Yuichiro Kubo, Hiroshi Honda

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


We report a male case of primary retroperitoneal mucinous cystadenoma (PRMC) that was at initially misdiagnosed as a complicated renal cyst. On ultrasonography, a71-year-old man was found to have an abdominal mass suspicious for right renal cyst. The initial computed tomography scan showed an unenhanced, low-density mass that deformed the edge of the right kidney into a beak shape. Four years later, the mass had increased in size. Magnetic resonance imaging revealed a cystic lesion. Its intracystic content showed relatively high intensity on a T1-weighted image, and the coronal gadolinium-enhanced T1-weighted image with fat suppression clearly showed a multilocular cystic mass without enhancing mural nodules. The final diagnosis of PRMC was obtained pathologically after surgery. Because PRMC has malignant potential, this rare entity should be considered when a retroperitoneal cystic tumor is evaluated, even in a male patient.

Original languageEnglish
Pages (from-to)594-597
Number of pages4
JournalJapanese Journal of Radiology
Issue number7
Publication statusPublished - Aug 2012

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging


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