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Journal of Case Reports
Solitary Colon Metastasis from Renal Cell Carcinoma
Arjav H Nanavati, Jenny Thomas, Priya Barbaniya, Rajeshkumar C Mahey, Sudatta B Waghmare 
Department of General Surgery, TNMC & BYL Nair Ch. Hospital, Mumba, Maharashtra, India.
Corresponding Author:
Dr Sudatta Waghmare
Email: sudattaw@gmail.com
Received: 26-OCT-2020 Accepted: 08-OCT-2021 Published Online: 15-NOV-2021
DOI: http://dx.doi.org/10.17659/01.2021.0060
Background: The most common renal malignancy in adults is renal cell carcinoma (RCC). Metastatic disease is relatively common and at the time of diagnosis may be present in upto 25% of patients. Frequent sites of metastasis are lung, bone, brain, liver and adrenal glands. The risk of recurrence even after curative resection is a 30-40%. The gastrointestinal tract, particularly the colon, represents a very uncommon site of late metastatic disease. Case Report: We present a case of a 40-year-old-male with solitary colonic renal cell carcinoma metastasis. Patient underwent laparoscopic nephrectomy in 2016 in view of renal mass and was followed by chemotherapy for clear cell carcinoma. He had history of water diarrhoea, abdominal pain, tenesmus and haematochezia. Investigation revealed circumferential thickening involving the proximal and mid segment of sigmoid colon, stricture around 30 cm from the anal verge and histopathology suggestive of deposits of renal cell carcinoma. FDG PET scan was suggestive of enhancing necrotic lesion in the wall of sigmoid colon with multiple deposits noted in adjacent mesentery. On diagnostic laparoscopy focal lesion was noted in the sigmoid colon with no evidence of omental, peritoneal and any other metastasis. Resection and anastomosis of lesion was done. Histopathology was clear cell carcinoma with clear margins. Conclusion: The colon is a potential, though uncommon, site for solitary metastasis from RCC. Oncologic resection with negative margins may result in long-term survival in patients with isolated metastatic disease.
Keywords : Colonic Diseases, Metastasis, Renal Cell Carcinoma, Sigmoid Colon, Solitary Kidney.
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