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Neurilemoma of the renal capsule: MR imaging and pathologic correlation
M Tsurusaki1, F Mimura, N Yasui
1Department of Radiology, School of Medicine, Kobe University, Kobe City, 650-0017, Japan.
Abstract:
We report a case of neurilemoma arising from the renal capsule. Renal neurilemoma is an especially rare tumor, with only 15 cases previously reported. We attempted to correlate MR findings with microscopic components of the tumor. On T2-weighted images the solid part of the tumor was heterogeneous hyperintense. The MR signal intensity on T2-weighted images help estimate microscopic components of the renal neurilemoma.
Insights
This study details a rare renal capsule neurilemoma, correlating MRI findings with tumor composition. T2-weighted MRI signals can help estimate microscopic features of this uncommon kidney tumor.
Area of Science:
- Nephrology
- Oncology
- Radiology
Background:
- Neurilemoma, a benign nerve sheath tumor, rarely occurs in the renal capsule.
- Only 15 cases of renal capsule neurilemoma have been previously documented.
- Accurate diagnosis and characterization of rare renal tumors are clinically significant.
Observation:
- A case of neurilemoma originating from the renal capsule is presented.
- Magnetic resonance (MR) imaging was utilized to evaluate the tumor.
- The solid component of the tumor exhibited heterogeneous hyperintensity on T2-weighted images.
Findings:
- Correlation between MR imaging findings and microscopic tumor components was investigated.
- T2-weighted MR signal intensity demonstrated a relationship with the tumor's microscopic characteristics.
- Heterogeneous hyperintensity on T2-weighted images suggests specific microscopic features.
Implications:
- MR imaging, particularly T2-weighted sequences, may aid in the preoperative diagnosis of renal capsule neurilemoma.
- Understanding the imaging features of rare renal tumors improves diagnostic accuracy.
- This case contributes to the limited literature on renal neurilemoma, enhancing knowledge of its radiological presentation.