Subgaleal Hematoma

  • Etiology: birth trauma or blunt trauma resulting in blood in subgaleal space
  • Imaging: fluid collection in subcutaneous tissue that crosses sutures, contains blood
  • DDX: caput succedaneum
  • Clinical: lasts for weeks

Cases of Subgaleal Hematoma

CT 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.
Radiograph of stellate skull fracture and CT of acute subdural hematoma due to accidental trauma
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.
CT of subgaleal hematoma, diastatic skull fracture, depressed skull fracture, cerebellar contusion, diffuse cerebral edema in child abuse
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.