Antenatal diagnosis of molybdenum cofactor deficiency.

Analysis of uncultured chorionic villus material from a woman at risk of fetus with sulfite oxidase deficiency revealed a deficiency of sulfite oxidase. This was confirmed on termination of the pregnancy.

[Post-radiation brachial plexopathy. Persistent conduction block. Myokymic discharges and cramps].

The distinction between radiation and tumor brachial plexopathy may be difficult. The electrophysiological recording of myokymic discharges, frequently present in the former but rare in the latter type of plexopathy, can be helpful for the diagnosis. However, the pathophysiology and the site of origin of these discharges remain unclear.