Kirner's deformity of all fingers in a 5-year-old girl: soft-tissue enhancement with normal bones on contrast-enhanced MRI

Kirner's deformity is an uncommon, but characteristic volar-radial incurvature of the distal phalanx of the little finger. We report a 5-year-old girl with dystelephalangy of all fingers. Some members of the mother's family showed dystelephalangy of the little fingers; the father's family history was unaffected. Contrast-enhanced MRI showed enhancement of the soft tissues of the distal phalanges, but no bone deformities. This leads to the assumption that the radial and volar deviation of the distal phalanges is the result of a chronic inflammatory process or a vascularisation disorder of the soft tissue. (orig.)