Joint Mouse

Articular mouse (mus arthritis; lat. mus - mouse + lat. articularis - articulated). In humans, it was first discovered by R. Pietz (Pietz, 1948). This is the presence of a submedullary extramedullary tumor node that develops from a normal mesenchymal precursor of the brain and does not have a fibril or choroid. Submedullary articular tumor (arrectum submedullare arthritis) is a formation emerging from the dura mater due to the destruction of the latter, and then growing in the cranial direction. The tumor grows evenly both in the dura mater and in the substance of the brain and, bordering the grooves of the bodies of the lateral ventricles