Death triangle

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Diagram of blood flow from the death triangle (right side). The angular vein (visible at the root of the nose) connects to the orbital veins, which drain the blood into the cave cavity (cavernous sinus) The triangulum mortis is an anatomical area of ​​the triangular face, the base of which forms the line connecting the corners of the mouth, and the top is the tip of the pyramid of the nose. It contains the upper lip and the pyramid of the nose.

This area has a specific venous vein: on the one hand the veins of the nose and upper lip are connected to the vein of the neck through the facial vein, and on the other up through the angular vein and the upper and lower eye veins (see figure) enter the cavernous sinus. cavity skull.

Blood flow to the cranial cavity through an angular vein is dangerous in the case of inflammation within this triangle (nasal hypertrophy, upper lip abscess), posing a risk to life-threatening intracranial complications, particularly thrombotic sinusitis. It is followed by thrombotic venous thrombosis. Intracranial complications in this area are also conducive to the specific structure of the vein of the face, which may be devoid of venous valves, which promotes the spread of inflammation. Bibliography

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