title: Carcinoid with carcinoma: a case of tumor-to-tumor metastasis.
mesh_terms: D000230:Adenocarcinoma / Q000556:secondary*; D000368:Aged; D002276:Carcinoid Tumor / Q000473:pathology*; D006801:Humans; D007078:Ileal Neoplasms / Q000473:pathology / Q000556:secondary*; D008297:Male; D009378:Neoplasms, Multiple Primary / Q000473:pathology*; D011471:Prostatic Neoplasms / Q000473:pathology*