A Case of Primary Melanoma of the Anus that Spread to the Submucosa of the Rectum / 대한소화기내시경학회지
Korean Journal of Gastrointestinal Endoscopy
;
: 299-302, 2008.
Artigo
em Coreano
| WPRIM
| ID: wpr-183186
ABSTRACT
Primary malignant melanoma of the anorectum is rare, representing about 1% of all colorectal carcinoma and less than 1% of all melanomas. The most common symptom of malignant melanoma of the anorectum is anal bleeding and this is often misdiagnosed as hemorrhoids. A 72-year-old female patient was admitted due to intermittent anal bleeding for 6 months. Colonoscopic examination showed a large exophytic mass with an irregularly ulcerated and greenish-brown pigmentation on the anus and the examination also simultaneously showed a submucosal tumor-like lesion in the rectum that was located 5 cm from the anal verge. Light microscopy of the tumor revealed malignant melanocytes and the tumor cells reacted positively for immunohistochemical staining with S-100 protein and HMB-45. Distant metastasis to the brain was detected on brain MRI.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Canal Anal
/
Reto
/
Úlcera
/
Encéfalo
/
Pigmentação
/
Neoplasias Colorretais
/
Proteínas S100
/
Hemorragia
/
Hemorroidas
/
Luz
Limite:
Idoso
/
Feminino
/
Humanos
Idioma:
Coreano
Revista:
Korean Journal of Gastrointestinal Endoscopy
Ano de publicação:
2008
Tipo de documento:
Artigo
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