Culture-negative tricuspid valve endocarditis in an intravenous drug abuser masquerading as pulmonary tuberculosis in Nepal: a case report.

Intravenous drug use is the main cause of right-sided valvular infective endocarditis. Endocarditis should be considered in intravenous drug users even in the absence of positive blood cultures. An appropriate antibiotic regimen and long-term follow-up with a multidisciplinary team are necessary for a good outcome.