What is the key distinguishing feature of caput succedaneum compared to cephalohematoma?

The key distinguishing feature of caput succedaneum is that it crosses suture lines. This condition occurs as a result of the pressure exerted on the baby's head during delivery, leading to fluid accumulation in the soft tissues of the head. Since caput succedaneum is composed of extra cranial fluid and covers a broader area, it is capable of overriding the boundaries defined by the sutures of the skull. This is a significant clinical characteristic that helps differentiate it from cephalohematoma, which is confined to a specific area and does not extend across suture lines due to its nature as a collection of blood between the skull and the periosteum.

Understanding this feature is important in clinical practice, as it aids in appropriate assessment and management of newborn head injuries. Recognizing the differences between these two conditions helps in evaluating the potential complications and guiding treatment strategies.