Anorectal malignant melanoma: preoperative usefulness of magnetic resonance imaging

Magnetic resonance imaging (MRI) findings in three patients with primary anorectal malignant melanoma are described. Two patients had melanotic and one had amelanotic anorectal melanoma. The findings of MRI with a pelvic coil and an endorectal coil were consistent with pathologic findings. MRI with...

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Published inJournal of gastroenterology Vol. 40; no. 8; pp. 836 - 842
Main Authors Matsuoka, Hiroyoshi, Nakamura, Akihisa, Iwamoto, Kaori, Sugiyama, Masanori, Hachiya, Junichi, Atomi, Yutaka, Masaki, Tadahiko
Format Journal Article
LanguageEnglish
Published Japan Springer Nature B.V 01.08.2005
Subjects
Adult
Aged
Anus Neoplasms - diagnosis
Female
Humans
Magnetic Resonance Imaging
Male
Melanoma, Amelanotic - diagnosis
Rectal Neoplasms - diagnosis
Sarcoma, Clear Cell - diagnosis
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Summary:Magnetic resonance imaging (MRI) findings in three patients with primary anorectal malignant melanoma are described. Two patients had melanotic and one had amelanotic anorectal melanoma. The findings of MRI with a pelvic coil and an endorectal coil were consistent with pathologic findings. MRI with a pelvic coil demonstrated the melanotic component as high signal intensity on T1-weighted imaging. MRI with a pelvic coil and an endorectal coil was useful for staging anorectal melanoma. This article describes the initial report of the use of an endorectal coil for malignant melanoma of the anorectum.
Bibliography:ObjectType-Case Study-2
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ISSN:0944-1174
1435-5922
DOI:10.1007/s00535-005-1638-4