case_images: PMC11787559_01
case_images: A, 7 x 5 centimeters parietal scalp swelling; B, ultrasound of this subgaleal collection (1: subaneurotic fluid collection; 2: galea aponeorotica; 3: periosteum of the parietal bone).
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case_images: This swelling is soft, stable, painless to the touch, skin-colored, and without discomfort caused by palpation (Fig 1, A). An ultrasound scan (Fig 1, B) revealed a subcutaneous fluid swelling, without bleeding or bone abnormality.
case_images: PMC11787559_02
case_images: Occipital scalp swelling at the diagnosis.
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case_images: A three-month-old child presented with an acquired, asymptomatic, soft, skin-colored, subcutaneous mass in the occipital region (Fig 2).
case_images: PMC11787559_03
case_images: Subgaleal fronto-temporo-parietal hematoma.
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case_images: A 13-year-old adolescent presented with an acute, spontaneous, painless, diffuse collection in the fronto-temporo-parietal region, flesh-colored, deforming the upper part of the skull and face (Fig 3).
case_images: A, Magnetic resonance imaging frontal section T2 fat sat sequence showing this large subgaleal collection (1). B, Magnetic resonance imaging sagittal section T2 flair sequence showing the subgaleal collection (1) and the sinus pericranii in communication with the sagittal sinus (2).
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case_images: After angio-magnetic resonance imaging, it was concluded that a subgaleal hematoma was complicating a sinus pericranii venous malformation (Fig 4, B).
case_images: Sagittal section computerized tomography scan showing a bone defect at the two-thirds of the sagittal sinus (1).
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case_images: A). A computerized tomography scan confirmed that the effusion was serohematic and partially calcified, but also showed a small bony defect in the skull opposite the sagittal sinus (Fig 5).