This elderly man had, for eight years, ignored the changes in the fourth and fifth fingers of his right hand. The problem had progressed slowly from a tender thickening in his palm, to the increasing flexion of the fingers in a fixed position. At this stage the problem was interfering with his ability to use his hand.

What could be the most probable diagnosis of this condition? *This image based case is from Docplexus editorial team for educative purpose only. Source: Haymarket