Deathwatch beetle. Deathwatch beetle (Xestobium rufovillosum), an anobiid, or borer insect, of the family Anobiidae (insect order Coleoptera) that makes a ticking or clicking sound by bumping its head or jaws against the sides of the tunnels as it bores in old furniture and wood.
1 Superior vena cava syndrome is most often caused by compression of the vein (the superior vena cava), that returns blood from the upper body back to the right atrium of the heart by tumor.  Symptoms include swelling of the face and arms associated with shortness of breath.
The superior vena cava brings oxygen-poor blood from the head, neck and arms to the right atrium, while the inferior vena cava returns oxygen-poor blood to the same chamber from lower portions of the body.Remember that both the superior and inferior vena cavae (cavae is plural for cava and is pronounced cay-veeh).he superior vena cava brings oxygen-poor blood from the head, neck and arms to the right atrium, while the inferior vena cava returns oxygen-poor blood to the same chamber from lower portions of the body.