RT Journal Article SR Electronic T1 Parachute deformity of the mitral valve JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 632 OP 636 DO 10.1136/thx.24.5.632 VO 24 IS 5 A1 Bett, J. H. N. A1 Stovin, P. G. I. YR 1969 UL http://thorax.bmj.com/content/24/5/632.abstract AB A case of parachute deformity of the mitral valve, a rare congenital form of mitral stenosis characterized by insertion of the chordae tendineae into a single posterior papillary muscle, is described in an 11-year-old girl. The eleven other cases in the English literature are reviewed.