sigmoid sinus

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Related to Sigmoid sinuses: sinus sigmoideus
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Noun1.sigmoid sinus - an S-shaped dural sinus on the temporal and occipital bones
venous sinus, sinus - a wide channel containing blood; does not have the coating of an ordinary blood vessel
References in periodicals archive ?
Forty dried human adult skulls, which had clearly identifiable osseous grooves of the transverse and sigmoid sinuses and the point of the SP, were provided by the Department of Anatomy of Medical College of Xi'an Jiaotong University.
Thrombosis was present in the transverse and sigmoid sinuses in three patients, in the transverse and sagittal sinuses in one patient and in all three sinuses in one patient.
The thrombus was monitored by ultrasonography via a window in the parieto-occipital bone, and recannulation of the transverse and sigmoid sinuses was demonstrated at week 5.
1) The vertex and posterior fossa are locations where the superior sagittal, transverse and sigmoid sinuses reside, but are frequently obscured from beam hardening on noncontrast CT, contributing to the decreased reliability of the hyperdense sinus sign.