Synchronous primary cancers: Renal cell carcinoma and rectal cancer.

Although cancers of rectum and kidney are common malignancies, the occurrence of primary synchronous neoplasms of these organs has been reported rarely. Very few case reports are available in literature till date. The relationship between these two events remains unclear, probably because of the rarity of the association. In this report, we describe incidentally detected renal cell carcinoma in an elderly man, during staging workup of rectal adenocarcinoma and both malignancies were surgically managed simultaneously with curative intent.