Falling From Laughing: Laughing Gas-Induced Subacute Combined Degeneration From Nitrous Oxide.

Laughing gas is becoming increasingly popular as a recreational drug of choice, particularly among young adults. Nitrous oxide, the toxic component of laughing gas, can cause neuronal injury when used in high doses. Through multiple mechanisms, nitrous oxide leads to B12 depletion and subsequent demyelination, particularly in the spinal cord.

Chronic Inferior Vena Cava Filter Thrombosis: Endovascular Treatment and One-Year Follow-Up with Intravascular Ultrasonography.

Inferior vena cava (IVC) filter thrombosis can be fatal when it is not detected and treated. Its management can be challenging, because little evidence supports specific treatments. We present the case of a 72-year-old man with a history of deep vein thrombosis in whom IVC filter thrombosis developed 7 years after filter placement.