Feb 15, 2021 · Venous lacunae, also known as venous lakes, are enlarged venous spaces within the skull, most often in the parasagittal region. They are normal variants and their primary importance is that they may mimic lytic lesions .

Aug 21, 2024 · Placental (venous) lakes refer to a phenomenon of formation of hypoechoic cystic spaces centrally within the placenta. Finding placental lakes during a second trimester ultrasound scan is not associated with any uteroplacental complication or with an …

Feb 18, 2025 · Arachnoid granulations, also known as Pacchionian granulations, are projections of the arachnoid membrane (villi) into the dural sinuses that allow CSF to pass from the subarachnoid space into the venous system.

Jun 11, 2020 · The term venous lakes may refer to: cutaneous venous lakes, often occurring on the lower lip 1; osseous venous lakes occurring in the skull 2; placental (venous) lakes 3

An arachnoid granulation typically appears on Contrast-enhanced CT (our case non-enhanced CT) as a round or oval filling defect within a dural venous sinus. Arachnoid granulations are most commonly located within the transverse sinuses, superior …

Mar 15, 2024 · The superior sagittal sinus (SSS) is the largest dural venous sinus. As the name suggests, it runs in a sagittal plane in the superior aspect of the falx cerebri.

Mar 5, 2023 · The inner table is more affected than the outer, with regions of apparent thinning (corresponding to unossified fibrous bone) of the skull vault. If particularly severe, with the individual lacunae coalescing into larger defects the term craniofenestrae is used.

Knipe H, Placental lakes. Case study, Radiopaedia.org (Accessed on 07 Mar 2025) https://doi.org/10.53347/rID-77191

CT scan was requested and showed dense superior sagittal sinus and congested left upper cortical vein, MRI and MRV were advised for further evaluation of suspected venous thrombosis. It showed an abnormal signal in the frontoparietal veins more on the left, thrombosis in the superior sagittal and left transverse sinuses.

Jan 8, 2025 · Orbital lymphangiomas are non-encapsulated venous lymphatic malformations formed of blood - or fluid - containing endothelial lacunae included within a fibrous stroma. Radiographic features