Year 2014 / Volume 106 / Number 4
Digestive Diseases Image
Anorectal melanoma associated with colonic metastasis

281-282

Macarena Fernández-Albornoz, Joaquín Irarrázaval-Espinoza, Andrés Larach-Kattan

Abstract
A 67-year-old female patient with no medical history presents with pain and increased volume in her right lower limb
for the last three weeks. She is admitted with a diagnosis of right-side iliac-femoral-popliteal deep venous thrombosis and
bilateral pulmonary thromboembolism. She developed rectorrhagia following anticoagulation. Colonoscopy revealed an
exophytic, mamillated, friable, anteriorly ulcerated lesion from the anal margin to the mid rectum (Fig. 1), two lesions
with similar characteristics in the ascending colon, and three such lesions at the ileocecal valve (Fig. 2). Histopathology
and immunohistochemical studies are consistent with melanoma. Abdominal and pelvic CT and MRI scans show a solidly
thickened wall with lumpy contours, heterogeneous structure, and poorly delimited borders in the mid and lower rectum,
cecum, and ascending colon. She also has neoplastic-looking adenopathies in the right external iliac chain, right hypogastric
chain, and aortic bifurcation. The patient received symptomatic palliative care.
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Macarena Fernández-Albornoz, Joaquín Irarrázaval-Espinoza, Andrés Larach-Kattan. Anorectal melanoma associated with colonic metastasis. 281-282


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