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Sigmoid Colonic Polyp as Initial Presentation of Metastatic Papillary Renal Cell Carcinoma
Andrew C Berry1, Rahman Nakshabendi2, Ozdemir Kanar3
1Department of Medicine, University of South Alabama, Mobile, AL.
Background:
Upon initial presentation, 25%-30% of patients with renal cell carcinoma have metastatic disease. Metastasis to the gastrointestinal tract is rare, but when it occurs, the large bowel is the least common site.
Case Report:
A 75-year-old white male presented with vague abdominal symptoms and worsening hemoglobin and hematocrit levels. Colonoscopy revealed a polyp in the distal portion of the sigmoid colon. Histologic and immunohistochemical analysis suggested metastatic papillary renal cell carcinoma.
Conclusion:
To the best of our knowledge, this patient had a rare case of metastatic papillary renal cell carcinoma that metastasized to the colon and presented as a colon polyp.
