A nurse is assessing a newborn who was born vaginally with vacuum extractor assistance.The nurse notes swelling over the newborn's head that crosses the suture line.The nurse should identify the swelling as which of the following findings?

Choice A rationaleNevus flammeus is a vascular birthmark that appears as a flat, red to purple lesion. It does not involve swelling or extend across suture lines, distinguishing it from caput succedaneum.Choice B rationaleCaput succedaneum is swelling of the scalp caused by pressure during delivery. It crosses suture lines because it involves edema rather than blood accumulation within confined spaces.Choice C rationaleCephalohematoma is a subperiosteal hematoma confined by suture lines. It results from blood vessel rupture during delivery and does not cross suture lines, unlike caput succedaneum.Choice D rationaleErythema toxicum is a common rash seen in newborns, characterized by red patches and small pustules. It does not involve swelling or crossing suture lines, making it unrelated to this condition.