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Related Experiment Video

Updated: May 30, 2026

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia
06:15

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia

Published on: August 9, 2024

[Epithelioid angiomyolipoma : a case report].

Taiyo Otoshi1, Ken-Ichi Kobayashi, Keigo Madono

  • 1The Department of Urology, Osaka Police Hospital.

Hinyokika Kiyo. Acta Urologica Japonica
|August 12, 2011
PubMed
Summary

A rare epithelioid angiomyolipoma was diagnosed in a 63-year-old woman presenting with a renal mass. This diagnosis was confirmed via immunohistochemistry, differentiating it from renal cell carcinoma.

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Area of Science:

  • Urology
  • Oncology
  • Pathology

Background:

  • Renal masses require accurate diagnosis to guide treatment.
  • Epithelioid angiomyolipoma is a rare renal tumor often misdiagnosed as renal cell carcinoma.

Observation:

  • A 63-year-old woman presented with a 7.5 cm right renal mass.
  • Initial imaging suggested renal cell carcinoma, leading to laparoscopic nephrectomy.
  • Histological examination revealed polygonal cells with eosinophilic cytoplasm and large nuclei.

Findings:

  • Immunohistochemical staining for renal cell carcinoma markers (AE1/AE3, CAM5.2) was negative.
  • Immunohistochemical staining for melanoma marker (HMB-45) was positive.
  • The final diagnosis was epithelioid angiomyolipoma.

Related Experiment Videos

Last Updated: May 30, 2026

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia
06:15

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia

Published on: August 9, 2024

Implications:

  • Accurate diagnosis of renal tumors is crucial for appropriate management.
  • Immunohistochemistry plays a vital role in differentiating renal tumors with similar presentations.
  • Epithelioid angiomyolipoma can be successfully treated with nephrectomy, with no recurrence observed in this case.