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.
Venogram shows almost complete occlusion of superior vena cava with dramatic collateral drainage through left superior intercostal vein. Superior vena cava syndrome (case 1, continued). Palmaz P308 stent mounted on 12-mm balloon was deployed in superior vena cava after it was predilated to 8 mm. Stent was subsequently dilated to 14 mm.