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[A case of renal pseudotumor]
Y Yamanaka1, N Kawamura, M Akimoto
1Department of Urology, Nippon Medical School.
Hinyokika Kiyo. Acta Urologica Japonica
|February 1, 1988
Summary
A rare case of renal pseudotumor, a malformation of the kidney, was diagnosed in a 47-year-old female presenting with flank pain. Surgical removal confirmed normal renal tissue, highlighting the importance of considering congenital anomalies in renal mass diagnosis.
Area of Science:
- Nephrology
- Radiology
- Pathology
Background:
- Renal pseudotumors are rare congenital anomalies that can mimic renal masses on imaging.
- Accurate diagnosis is crucial to avoid unnecessary surgical intervention.
Observation:
- A 47-year-old female presented with right flank pain and imaging findings suggestive of a renal mass.
- Intravenous pyelography revealed a filling defect and calyceal deformity; ultrasonography and CT showed a round renal mass.
- Selective renal angiography could not definitively rule out a hypovascular tumor.
Findings:
- Right nephrectomy was performed, and the bisected specimen revealed lobar dysmorphism (malposition of a renal lobe) without neoplastic changes.
- Microscopic examination confirmed normal renal parenchyma, establishing the diagnosis of renal pseudotumor.
Implications:
- This case underscores the importance of considering congenital renal anomalies in the differential diagnosis of renal masses.
- Radiological and clinical findings should be carefully correlated with pathological examination to ensure accurate diagnosis and appropriate patient management.
- Awareness of renal pseudotumor can prevent misdiagnosis and unnecessary radical surgeries.