Metastatic malignant melanoma: an unusual case presentation

Area of Science:

• Oncology
• Nephrology
• Urology

Background:

• Malignant melanoma commonly metastasizes to the genitourinary tract, but this is typically an incidental autopsy finding.
• Clinical presentation of genitourinary melanoma metastasis is infrequent, posing diagnostic challenges.

Observation:

• A previously asymptomatic patient presented with gross hematuria, a concerning urinary symptom.
• Imaging revealed a large renal mass, prompting further investigation.

Findings:

• The renal mass was diagnosed as metastatic melanoma.
• This case highlights a rare clinical manifestation of advanced melanoma.

Implications:

• Metastatic melanoma to the kidney should be included in the differential diagnosis for patients presenting with hematuria.
• Early consideration of rare metastatic sites can improve diagnostic accuracy and patient outcomes.