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Updated: May 1, 2026

Murine Bilateral Renal Lymphadenectomy
Published on: December 30, 2025
A unique case of kidney's collecting system MALT lymphoma
Seyed Alaeddin Asgari1, Hamidreza Baghani Aval1, Seyed Ali Asgari1
1Urology Research Center, School of Medical, Guilan University of Medical Sciences, Razi Hospital, Rasht, Iran.
Abstract:
Low-grade B cell lymphomas of mucosa-associated lymphoid tissue (MALT lymphomas) are mostly seen in the gastrointestinal tract. MALT lymphomas involving kidney are extremely rare. We report on a case of MALT lymphomas of the kidney. A 74-year-old woman presented with an episode of gross hematuria and right flank pain. In renal sonography, we found a hypoecho lesion measuring 61 × 58 × 44 mm in the lower pole of right kidney. A computed tomography scan revealed an enlarged hypodense soft tissue measuring 62 × 42 × 37 mm within the pelvic brim of the right kidney, with extension to the proximal portion of the ipsilateral ureter and engulfed it. The patient underwent a right radical nephrectomy. The pathology specimen indicated a lymphoprolifrative disorder involving the kidney and ureter. To obtain a definitive diagnosis, we used an immunohistochemistry, which confirmed the diagnosis of a MALT lymphoma.
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