中壢高正雄骨科復健診所

Mucoid cyst

This term refers to a tumefaction which appears at the extremity of the fingers, above the nail and develops either rapidly or progressively over several years. 
It is a cyst which is synovial in nature, with its origin at the last finger joint and it is often caused by the early stages of arthrosis.

Deformation may be observed in the nail and is caused by compression of the cyst on the matrice unguéale.

The mucoid cyst is naturally benign, but can be harmful in terms of the compression or the  risk of infection it represents in presence of spontaneous ruptures.