A Case of Alveolar Soft Part Sarcoma (ASPS) Near the Anus: Usefulness of Multi-slice CT (MSCT) of Three Dimension Angiography (3D-angio) Examination for Deciding on an Approach

• Published in: Nippon Daicho Komonbyo Gakkai Zasshi Vol. 56; no. 5; pp. 251 - 256
• Main Authors: Okamoto, N., Maruta, M., Maeda, K., Sato, H., Masumori, K., Aoyama, H., Hatsuoka, H., Kato, R.
• Format: Journal Article
• Language: English
• Published: The Japan Society of Coloproctology 2003
• ISSN: 0047-1801; 1882-9619
• DOI: 10.3862/jcoloproctology.56.251

We report a case of ASPS with special reference to the usefulness of multi planer reconstruction (MPR) and 3D-angio by MSCT for selecting an operation method and approach. A 31-year-old man with anal pain and bleeding during defecation was admitted to our hospital for further examination. Diagnostic imaging studies revealed a suspectable sarcoma. MPR and 3D-angio were used to select the approach to the tumor and operation method. Tumorectomy, combined with partial resection of the anal sphincter, and puborectal and external sphincter muscle plication, were successfully performed. Histological findings of the resected specimen showed the tumor grown like an alveolar origined from the striate muscle. Immunohistochemical testing was negative for HMB-45 and positive for myoglobin, and the tumor was diagnosed as ASPS. The postoperative course was uneventful.