Primary leiomyosarcoma of ureter

Area of Science:

• Urologic oncology
• Medical imaging
• Surgical pathology

Background:

• Primary leiomyosarcoma of the ureter is an exceptionally rare malignancy.
• This study presents the tenth documented case globally.
• A review of prior cases is included for context.

Observation:

• This case is the first to be investigated using both percutaneous pyelography and ultrasonography.
• Percutaneous pyelography provided more detailed information compared to retrograde ureterography.
• Ultrasonography initially suggested a cystic lesion, which contrasted with the actual solid tumor found during examination.

Findings:

• The patient underwent nephroureterectomy, para-aortic lymph node dissection, and radiotherapy.
• Despite aggressive treatment, distant metastasis occurred.
• The patient succumbed to the disease fifteen months post-diagnosis.

Implications:

• Highlights the diagnostic challenges and rarity of ureteral leiomyosarcoma.
• Emphasizes the importance of advanced imaging techniques in diagnosing rare urologic tumors.
• Underscores the poor prognosis associated with advanced primary ureteral leiomyosarcoma.