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At birth the frontal bone contains two portions, separated by the metopic (frontal) suture. Metopism is the condition of having a persistent metopic suture. The metopic suture is typically obliterated, except at its lower part, by the eighth year, but infrequently persists throughout life. [6] There is no single proven cause of metopism.
It is also called the metopic suture, [1] [2] although this term may also refer specifically to a persistent frontal suture. [ 3 ] If the suture is not present at birth because both frontal bones have fused ( craniosynostosis ), it will cause a keel-shaped deformity of the skull called trigonocephaly .
The inflammation surrounding the vein and compression of the vein may lead to blood clot formation. Pieces of the potentially infected clot can break off and travel through the right heart into the lungs as emboli, blocking branches of the pulmonary artery that carry deoxygenated blood from the right side of the heart to the lungs.
This foramen varies in size in different subjects, and is frequently impervious; when open, it transmits a vein from the nose to the superior sagittal sinus. On either side of the middle line the bone presents depressions for the convolutions of the brain, and numerous small furrows for the anterior branches of the middle meningeal vessels.
Pain, weakness, loss of muscle at the base of the thumb, swelling, paleness, bluish coloration [1] [2] Usual onset: 20 to 50 years of age [1] Types: Neurogenic, venous, arterial [1] Causes: Compression of the nerves, arteries, or veins in the superior thoracic aperture (thoracic outlet), the passageway from the lower neck to the armpit [1] Risk ...
While inserting a cannula into Ms Malik's arm following the birth, one nurse was "so rough" with her hand that she "ended up with a blood clot" in her vein that has "still not really healed".
Dixon's execution team resorted to inserting an IV line into his femoral vein, which caused him to experience pain and resulted in a "fair amount of blood," according to Associated Press reporter ...
Trigonocephaly is a congenital condition due to premature fusion of the metopic suture (from Ancient Greek metopon 'forehead'), leading to a triangular forehead. The premature merging of the two frontal bones leads to transverse growth restriction and parallel growth expansion.