[Osseous metaplasia in rectal cancer in a 69-year-old man]. / Metaplazja kostna w raku gruczolowym odbytnicy u 69-letniego mezczyzny.

The first case of osseous metaplasia in rectal cancer is described. The authors present the diagnostic evaluation based on the transrectal ultrasound examination, determination of neoplastic markers, pathological examination, treatment, and follow-up in a 69-year-old man.