Excisional biopsy is diagnostic but not therapeutic, and recurrence after biopsy has been reported in up to 75% of children. Complications of excisional biopsy for diagnosis include scar formation and ...

Two distinguishing features of long-standing RA are “swan neck” deformities and boutonniere deformities of the fingers (Figure 1). 3 Swan neck deformities develop with hyperextension of the PIP joint ...

A lump on the finger knuckle joint can happen for many reasons, ranging from an inflammatory condition to an infection. In rare cases, a bump or lump on the finger knuckle joint can be due to a tumor.