[Inflammatory Pseudotumor of the Ureter : A Case Report and a Review]
Jumpei Oshima1, Tatsuya Kinoshita1, Norihide Tei1
1The Departments of Urology, Osaka National Hospital.
Abstract:
We report a case of inflammatory pseudotumor of the ureter. An 81-year-old man who had an operation of pelvic exenteration with ileal conduit presented with right flank pain. Computed tomography revealed a 16 mm mass of the right ureter with right hydronephrosis and renal atrophy. The mass increased in size during follow up. Right nephroureterectomy was performed with suspicion of ureteral cancer. Histopathological finding showed an inflammatory pseudotumor. No obvious recurrence has been observed for 33 months after the surgery.
Insights
A rare inflammatory pseudotumor of the ureter was diagnosed in an elderly male patient. Surgical removal confirmed the benign nature of the ureteral mass, with no recurrence observed post-operation.
Area of Science:
- Urology
- Pathology
- Oncology
Background:
- Inflammatory pseudotumor is a rare benign condition that can mimic malignant neoplasms.
- Ureteral masses require accurate diagnosis to differentiate between benign and malignant etiologies.
Observation:
- An 81-year-old male, post-pelvic exenteration with ileal conduit, presented with right flank pain.
- Computed tomography identified a 16 mm right ureteral mass with associated hydronephrosis and renal atrophy.
- The ureteral mass demonstrated interval growth on follow-up imaging.
Findings:
- A right nephroureterectomy was performed due to suspicion of ureteral cancer.
- Histopathological examination definitively diagnosed the ureteral mass as an inflammatory pseudotumor.
- The patient remained recurrence-free for 33 months following surgical intervention.
Implications:
- This case highlights the importance of considering inflammatory pseudotumor in the differential diagnosis of ureteral masses, even in patients with a history of pelvic surgery.
- Accurate histopathological diagnosis is crucial for appropriate management and patient counseling.
- Complete surgical resection provides a favorable prognosis for ureteral inflammatory pseudotumor.
