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Related Experiment Videos

Spontaneously ruptured multilocular cystic nephroma.

Ken Fujimoto1, Shoji Samma, Yoshihisa Fukui

  • 1Department of Urology, Prefectural Nara Hospital, 1-30-1 Hiramatsu, Nara City, Nara 631-0846, Japan. urodept@skyblue.ocn.ne.jp

International Journal of Urology : Official Journal of the Japanese Urological Association
|May 16, 2002
PubMed
Summary

A rare benign kidney tumor, multilocular cystic nephroma, spontaneously ruptured in an adult woman. This case highlights unique features including rupture and renal pelvis extension, previously unreported for this tumor type.

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Area of Science:

  • Nephrology
  • Oncology
  • Pathology

Background:

  • Multilocular cystic nephroma (MCN) is an uncommon benign renal neoplasm.
  • Spontaneous rupture of MCN is exceedingly rare, with limited case reports.

Observation:

  • A 33-year-old woman presented with flank pain, initially diagnosed as a ruptured renal tumor.
  • A 10 cm multilocular cystic lesion with internal hematoma and renal pelvis extension was surgically removed.
  • Microscopic examination revealed hobnail epithelium lining loculi and fibrous septa without malignant features.

Findings:

  • The final diagnosis was multilocular cystic nephroma with spontaneous rupture.
  • Tumor extension into the renal pelvis was observed, a feature noted in other MCN reports.
  • This case represents the first reported instance of spontaneous rupture in MCN.

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Implications:

  • The findings suggest that spontaneous rupture and renal pelvis extension may be potential characteristics of MCN.
  • Further investigation into the growth patterns and clinical behavior of MCN is warranted.
  • This case expands the understanding of MCN's presentation and potential complications.