Primary malignant melanoma of the urinary bladder

Area of Science:

• Oncology
• Urology

Background:

• Primary melanoma of the urinary bladder is an exceptionally rare malignancy.
• Fewer than 20 cases have been documented worldwide, often as isolated case reports.

Observation:

• A 71-year-old male presented with a two-month history of hematuria.
• Ultrasonography identified a 5-cm mass in the bladder trigone.
• Transurethral resection of the bladder tumor (TURBT) confirmed malignant melanoma.

Findings:

• Metastatic disease evaluation was negative at the time of diagnosis.
• The patient unfortunately passed away five months post-diagnosis, prior to radical treatment.

Implications:

• This case contributes to the limited literature on primary bladder melanoma.
• It underscores the aggressive nature and poor prognosis often associated with this rare cancer.
• Further research into optimal therapeutic strategies and prognostic factors is warranted.