[Giant urethral lithiasis]. / Litiasis gigante de uretra.

We report on a 46-year-old male with a giant calculus of the anterior urethra. The etiopathogenesis, diagnosis and treatment of this condition are discussed. Similar features have been described in one case of giant intradiverticular calculus reported in the literature.

[Double tumor pathology: simultaneous renal oncocytoma and colonic carcinoma]. / Doble patología tumoral: oncocitoma renal y carcinoma de colon simultáneos.

We report a case of renal oncocytoma associated with adenocarcinoma of the colon. Although the preoperative evaluation had disclosed a mass in the superior pole of the left kidney, renal oncocytoma had not been suspected and the foregoing was diagnosed pathologically from the intraoperative biopsy. The association of renal oncocytoma and other extraurological tumors reported in the literature are reviewed and the diagnostic and therapeutic aspects are discussed.