[Supernumerary right pararenal spleen]. / Bazo supernumerario pararrenal derecho.

Presentation of one case report of unexpected retroperitoneal mass, since it occurred no only in a supernumerary spleen but also because of the right pararenal location. A discussion is presented on the diagnostic difficulties due to such cases being most often asymptomatic, and on the differential diagnosis with splenosis, although the possibility of an embryologic origin was also considered.

[Bladder schistosomiasis: presentation of a new case]. / Esquistosomiasis vesical: presentación de un nuevo caso.

We report a case of urinary schistosomiasis involving only the bladder and mimicking a transitional cell pseudotumor. We describe the clinical and pathological features and discuss the diagnosis, medical and surgical treatment of this disease entity whose incidence is slowly increasing in black immigrants of the Maresme area of Barcelona.