Pediatric Subgaleal Hematoma Etiology: birth trauma or blunt trauma resulting in blood in subgaleal spaceImaging: fluid collection in subcutaneous tissue that crosses sutures, contains bloodDDX: caput succedaneumClinical: lasts for weeks Radiology Cases of Subgaleal Hematoma Axial CT without contrast of the brain shows a high density fluid collection in the left frontal subcutaneous tissue. There is also an underlying lentiform mixed density intracranial fluid collection. AP and lateral radiographs of the skull show numerous branching lucencies in the right parietal bone. Axial CT without contrast of the brain shows high density material in the right subgaleal tissues, a small high density cresenteric fluid collection in the right extra-axial space that extends posteriorly along the falx, and a mixed low-density and high density lesion in the right posterior parietal brain parenchyma. Axial CT without contrast of the brain shows high density material in the subgaleal tissues posteriorly, a wide lucency in the right posterior skull along with two areas of depressed lucency in the left frontal skull, a rounded high-density lesion in the midline of the cerebellum, and decreased density of the cerebrum when compared to the normal density of the cerebellum along with loss of the normal gray matter-white matter differentiation. Axial CT without contrast of the brain shows a cresenteric high-density fluid collection in the subcutaneous tissues of the right scalp that crosses suture lines and a cresenteric low-density fluid collection in the subcutaneous tissues of the left scalp that crosses suture lines. Intracranially, there is diffuse loss of gray matter-white matter differentiation secondary to diffuse cerebral edema.