When exploring the determinants of success in vacuum bell treatment, Toselli, et al, made a valuable contribution to the study of congenital chest wall deformities [1]. With 45% of patients still in follow-up, their results, in summary, are 17% of success, with a failure rate of 9.5% and dropouts of 34%. The variation in pectus depth in the group considered excellent was 0.7 (0.4;1.1) cm.
