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.
Article
in Korean
| 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.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Anal Canal
/
Rectum
/
Ulcer
/
Brain
/
Pigmentation
/
Colorectal Neoplasms
/
S100 Proteins
/
Hemorrhage
/
Hemorrhoids
/
Light
Limits:
Aged
/
Female
/
Humans
Language:
Korean
Journal:
Korean Journal of Gastrointestinal Endoscopy
Year:
2008
Type:
Article
Similar
MEDLINE
...
LILACS
LIS