Presentation
An incidental finding was found on follow-up for urinary retention.
Patient Data
Longitudinal ultrasound images visualizing a perinephric mass with homogeneous echotexture, isoechoic, and well-circumscribed. The widest portion measuring 25mm above the superior renal pole.
A core needle is visualized within the perinephric mass for biopsy (Ultrasound-guided).
Axial and coronal images of a homogeneous, well-circumscribed, hyperdense perirenal mass that enhances after the administration of IV contrast.
Ultrasound-guided biopsy was done and the histopathology report confirmed the diagnosis of primary perinephric lymphoma.
Case Discussion
Here is a case of asymptomatic presentation of perinephric/renal lymphoma that is confirmed histopathologically.
Isolated perinephric lymphoma is rare and accounts for less than 10% of renal lymphoma1.
Differential list includes; primary and secondary renal lymphoma, other primary renal malignancy, metastatic renal spread, renal hematoma, or renal abscess.
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