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Primary extranodal perirenal malignant lymphoma.
Kien T. Mai1, Bruce B. Burns, Phillip Isotalo
1Division of Anatomical Pathology, Department of Laboratory Medicine, Ottawa Civic Hospital, Ottawa, Ontario.
The Canadian Journal of Urology
|April 18, 2001
Summary
We present two cases of primary extranodal malignant lymphoma confined to the perirenal space. This rare condition can mimic renal neoplasms, highlighting the need for careful diagnosis in retroperitoneal imaging.
Area of Science:
- Oncology
- Urology
- Radiology
Background:
- Primary extranodal malignant lymphoma is rare.
- Perirenal lymphoma is often diagnosed based on imaging and history, sometimes with biopsy.
- Limited literature exists on lymphoma solely within the perirenal space.
Purpose of the Study:
- To report two cases of primary extranodal malignant lymphoma originating in the perirenal space.
- To emphasize the diagnostic challenges posed by perirenal lymphoma mimicking renal neoplasms.
- To differentiate primary perirenal lymphoma from secondary involvement or other retroperitoneal masses.
Main Methods:
- Case report analysis of two patients with primary extranodal perirenal malignant lymphoma.
- Comprehensive retroperitoneal examination to confirm disease localization.
- Review of clinical and radiologic findings, comparing them to known presentations of renal neoplasms.
Main Results:
- Two cases confirmed primary extranodal malignant lymphoma confined to the perirenal space.
- No nodal or other extranodal involvement was detected in either case.
- Clinical and radiologic examinations initially suggested a renal neoplasm due to lesion circumscription.
Conclusions:
- Primary extranodal perirenal malignant lymphoma is a distinct entity.
- The circumscribed nature of perirenal lymphoma can lead to misdiagnosis as a renal tumor.
- Accurate diagnosis requires careful consideration of lymphoma in the differential for perirenal masses.