Each of these conditions is associated with a higher risk of venous thrombus formation, but exactly why the cerebral venous sinus system is involved over other veins is unclear (Chaloupka et al ...

Sinus node modification was unsuccessful and ... and the skin was cyanotic with prominent superficial veins (Figure 1A). There was no venous pulsation in the neck, indicating the likely occlusion ...

dorsal and ventral coccygeal veins and occipital sinus 1,2. Sampling from the orbital sinus, nail clipping and cardiocentesis have been reported but are not recommended. The clinician or ...