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WHO Classification of Tumours
Secondary tumours of the anal canal


Metastases to the anal canal and perineum are rare and present as any other lesion involving this region with pain, bleeding, a mass, or altered bowel control. Most primaries are found in the rectum or colon, but occasionally also in the respiratory tract, breast and pancreas
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Dawson PM, Hershman MJ, Wood CB (1985)
Metastatic carcinoma of the breast in the anal canal.
Postgrad Med J 61: 1081



1
Fenger C (1989). Surgical pathology of the anal canal: a review of the recent literature on the anatomy and pathology. In: Progress in Surgical Pathology. Fenoglio-Preiser CM, Wolff M, Rilke F, eds. Springer-Verlag: Berlin, pp. 237-260.


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Kanhouwa S, Burns W, Matthews M, Chisholm R (1975)
Anaplastic carcinoma of the lung with metastasis to the anus: report of a case.
Dis Colon Rectum 18: 42-8




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Smiley D, Goldberg RI, Phillips RS, Barkin JS (1988)
Anal metastasis from colorectal carcinoma.
Am J Gastroenterol 83: 460-2



. There are few reports of metastatic squamous cell carcinoma
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Ger R, Reuben J (1968)
Squamous-cell carcinoma of the anal canal: a metastatic lesion.
Dis Colon Rectum 11: 213-9



. Malignant lymphoma, leukaemia and myeloma may infiltrate the anal canal, and eosinophilic granuloma has also been described 2
Fenger C (1989). Surgical pathology of the anal canal: a review of the recent literature on the anatomy and pathology. In: Progress in Surgical Pathology. Fenoglio-Preiser CM, Wolff M, Rilke F, eds. Springer-Verlag: Berlin, pp. 237-260.

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Mark Lane Welton
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Mark Lane Welton
Department of Surgery
Stanford University School of Medicine
Stanford
USA




René Lambert
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René Lambert
Section of Early Detection and Prevention
International Agency for Research on Cancer (IARC)
Lyon cedex 08
France




Fredrik T. Bosman
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Fredrik T. Bosman
Institut Universitaire de Pathologie
Centre Hospitalier Universitaire Vaudois (CHUV)
Lausanne
Switzerland