Which is defined as a vaguely outlined area of edematous tissue situated over the portion of the scalp that presents in a vertex delivery?
Correct Answer: A
Rationale: Caput succedaneum is the vaguely outlined area of edematous tissue situated over the portion of the scalp that presents in a vertex delivery. It is often caused by pressure from the vaginal wall during labor. This condition does not involve the calvarial bone and typically resolves on its own within a few days after birth. Hydrocephalus refers to the abnormal accumulation of cerebrospinal fluid within the brain, which can result in an enlarged head circumference. Cephalhematoma is a collection of blood between the periosteum and the skull bone, usually occurring after birth trauma. Subdural hematoma is bleeding between the dura mater and the arachnoid mater surrounding the brain and is typically seen in traumatic head injuries.