Diffuse large B-cell lymphoma with involvement of the kidney

A 59-year-old woman visited our hospital with a 2-week history of numbness over the left buttock and lateral aspect of the left thigh in December 2011. Contrast-enhanced CT showed a retroperitoneal mass anterior to the left wing of the ileum, infiltrating the left sacral foramen. Contrast-enhanced CT showed bilateral soft-tissue renal masses partially deforming the contours of the …