ABSTRACT

The prevalence of congenital inferior vena cava anomalies is difficultto pinpoint and is estimated to occur in 0.05–8.7% of the population. These abnormalities are often asymptomatic and are incidentally identified in patients undergoing imaging investigations for other reasons. Inferior vena cava agenesis maybe a risk factor for deep venous thrombosis due to inadequate venous drainage. We describe thecase of an 84-year-old female who was hospitalized due to unprovoked deep venous thrombosis and inferior vena cava agenesiswas foundin a further investigation.