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Updated: Apr 15, 2026

The Pocket-Creation Procedure of Endoscopic Submucosal Dissection for Large Rectal Laterally Spreading Tumors
Published on: February 13, 2026
Delayed recurrence of renal cell carcinoma presenting as a haemorrhoid
James R L Davies1, Gavin Smith2, Andrew J Cornaby2
1Department of Colorectal Surgery, Dorset County Hospital, Dorchester, Dorset, UK james.davies29@doctors.org.uk james.davies@dchft.nhs.uk.
Abstract:
Metastatic non-colorectal cancer of the anal canal is a rare entity. To date, only four cases have been described in the literature. We present a 76-year-old man who was referred with an unusual perianal lesion. He had a history of renal cell carcinoma 7 years previously. Histologically, the lesion revealed clear cell carcinoma in keeping with metastasis. To our knowledge, this is only the second time a renal carcinoma metastasis to the anal canal has been identified.
