Infectious Endocarditis due to Streptococcus bovis with Colon Cancer

(Department of Surgery II, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan)

Atsuko Yokota Mitsuhiro Yano Hiroyuki Nagahama
Masakazu Matsuyama Koji Furukawa Masanori Nishimura
Toshio Onitsuka
Infectious endocarditis associated with Streptococcus bovis, which is rare in Japan, is a frequently reported complication of gastrointestinal tumors, especially in colon cancer. We report a patient who was successfully treated for the S. bovis-induced infectious endocarditis complication in colon cancer. A 60-year-old man was admitted to our hospital for detailed examination of high fever of unknown origin, that had lasted for 2 months. S. bovis was identified in the venous blood culture. An echocardiogram showed severe aortic valve regurgitation of the third degree and vegetation on the aortic valve. We therefore diagnosed infectious endocarditis. Colonoscopy revealed sigmoid colon cancer. After endoscopic mucosal resection of the lesion, the aortic valve was replaced. The postoperative course was uneventful and he was discharged from the hospital 36 days post operatively.
  Jpn. J. Cardiovasc. Surg. 39:34-36(2010)

KeywordsStreptococcus bovis, infectious endocarditis, colon cancer