What kind of poison is the<br/>specific manifestation of the poison when Hernz body appears in the<br/>blood? () A: benzene B: lead C: aniline D: hydrogen cyanide

A 65-year-old man recently retired after many years in a job that involved exposure to aniline dyes. One month ago, he had an episode of hematuria that was not accompanied by abdominal pain. On physical examination, there are no abnormal findings. Urinalysis shows hematuria (4+) and no ketones, glucose, or protein. The result of a urine culture is negative. What is the most likely diagnosis? A: Renal clear cell carcinoma B: Glomerular disease C: Pyelonephritis D: Urothelial carcinoma