Renal leiomyoma: ultrasonography and computed tomography features with histopathologic correlation

Area of Science:

• Urology
• Radiology
• Pathology

Background:

• Renal leiomyomas are mesenchymal neoplasms originating from kidney smooth muscle cells.
• They are relatively common, found in 5% of autopsies and 0.3% of treated kidney tumors.
• These tumors are typically located in the renal capsule.

Observation:

• Typical imaging findings include a peripheral renal location.
• Well-defined margins are characteristic on imaging studies.
• Hyperattenuation on nonenhanced computed tomography (CT) scans is a key feature.

Findings:

• Renal leiomyomas present with specific, recognizable imaging characteristics.
• These features aid in differentiating them from other renal neoplasms.
• Accurate identification is crucial for appropriate patient management.

Implications:

• Familiarity with renal leiomyoma imaging findings can improve diagnostic accuracy.
• This knowledge assists in distinguishing benign from potentially malignant renal masses.
• Correct diagnosis may prevent unnecessary surgical intervention for benign tumors.