The Diagnostic Value of Endoscopic Ultrasonography and Magnetic Resonance Imaging for Anorectal Malignant Melanoma: Report of a Case
| 详细信息 | 推荐本文 | |
- 作者：Hiroshi Sashiyama ; Wataru Takayama ; Shin-ichi Miyazaki ; Harufumi Makino ; Kazuyuki Matsushita ; Hideaki Shimada ; Takao Suzuki and Takenori Ochiai
- 关键词：Key words Malignant melanoma ; Anorectal malignant melanoma ; Endoscopic ultrasonography ; Magnetic resonance imaging
- 刊名：Surgery Today
- 出版时间：March 2003
- 出版年：2003
- 期刊代码：206_0941-1291
- 类别：med
- 卷：33
- 期：3
- 页码：209-213
- 数据来源：sp
摘要
A 74-year-old Japanese woman presented with a 3-month history of anal bleeding. Proctoscopy revealed an unusual polypoid lesion with focal pigmentation at the dentate line, which was histologically diagnosed as a malignant melanoma. Whole-body clinical and radiographic evaluations revealed no alternative primary source. Endoscopic ultrasonography (EUS) showed well-delineated hypoechoic tumors invading the muscularis propria, and magnetic resonance imaging (MRI) revealed regional lymphadenopathy. Following this evaluation, an abdominoperineal resection with regional lymphadenectomy was performed. The excised tumor was histologically confirmed to be malignant melanoma, and its depth and metastatic lymph nodes proved to have been accurately and precisely evaluated by the preoperative examinations. Thus, EUS and MRI are useful preoperative diagnostic tools for the tumor staging of primary anorectal malignant melanomas, as for other rectal tumors.