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Related Experiment Video

Updated: Sep 1, 2025

Optimizing Isolation and Purification of Murine Glomerular Mesangial Cells
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Optimizing Isolation and Purification of Murine Glomerular Mesangial Cells

Published on: March 7, 2025

413

Malignant juxtaglomerular cell tumor.

Daniel Geisler1, Fawaz Almutairi1, Ivy John1

  • 1Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA.

Urology Case Reports
|August 15, 2022
PubMed
Summary
This summary is machine-generated.

Malignant juxtaglomerular cell tumors (JGCTs) are rare. This report details a unique malignant JGCT case in a young man, characterized by high mitotic activity and novel GATA3 positivity.

Keywords:
GATA3Juxtaglomerular cell tumorKidneyMalignantRenin

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Area of Science:

  • Nephrology
  • Oncology
  • Pathology

Background:

  • Juxtaglomerular cell tumors (JGCTs) are rare renal neoplasms, predominantly benign.
  • Malignant or aggressive JGCTs are exceptionally uncommon, posing diagnostic challenges.

Observation:

  • A diagnostically challenging case of a malignant JGCT was identified in a 23-year-old male.
  • The tumor exhibited marked mitotic activity, a feature previously unreported in JGCTs.
  • Electron microscopy confirmed the diagnosis.

Findings:

  • Histologic, immunophenotypic, and molecular analyses were performed.
  • The malignant JGCT demonstrated novel GATA3 immunohistochemical positivity.
  • High mitotic activity was a key characteristic of this rare malignancy.

Implications:

  • This case expands the understanding of JGCT heterogeneity and malignant potential.
  • The identification of GATA3 positivity may offer new diagnostic avenues for rare JGCTs.
  • Recognizing these features is crucial for accurate diagnosis and patient management of rare renal tumors.