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Frontal bossing is the development of an unusually pronounced forehead which may also be associated with a heavier than normal brow ridge. It is caused by enlargement of the frontal bone , often in conjunction with abnormal enlargement of other facial bones , skull , mandible , and bones of the hands and feet.
Compensatory growth occurs forward at the coronal suture and backward at the lambdoid suture giving respectively a prominent forehead, called frontal bossing, and a prominent back portion of the head, called coning. [10] [11] This is the most common form of craniosynostosis. [13]
Parrot's sign (19th century), refers to at least two medical signs; one relating to a large skull and another to a pupil reaction. [1]One Parrot's sign describes the bony growth noted at autopsy by Joseph-Marie-Jules Parrot [] and Jonathan Hutchinson on the skulls of children with congenital syphilis (CS) in the 19th century.
Cranial sutures. A defining characteristic of Crouzon syndrome is craniosynostosis, which results in an abnormal head shape.This is present in combinations of: frontal bossing, trigonocephaly (fusion of the metopic suture), brachycephaly (fusion of the coronal suture), dolichocephaly (fusion of the sagittal suture), plagiocephaly (unilateral premature closure of lambdoid and coronal sutures ...
PDP has a number of visible signs. Most important clinical features are: pachydermia (thickening and wrinkling of the skin), furrowing of the face and scalp, periostosis (swelling of periarticular tissue and shaggy periosteal new bone formation of long bones) and digital clubbing (enlargement of fingertips). [1]
Most cases occur due to inadequate antenatal screening and treatment during pregnancy. [8] The baby is highly infectious if the rash and snuffles are present. [4] The disease may be suspected from tests on the mother; blood tests and ultrasound. [9] Tests on the baby may include blood tests, CSF analysis and medical imaging. [10]
Garre's sclerosing osteomyelitis is a type of chronic osteomyelitis also called periostitis ossificans and Garré's sclerosing osteomyelitis. It is a rare disease. [1] It mainly affects children and young adults. [2] It is associated with a low grade infection, which may be due to dental caries (cavities in the teeth). [citation needed]
The primary ossification center extends to form the corresponding half of the vertical part (squama) and horizontal part (orbital part) of the frontal bone. At birth the frontal bone contains two portions, separated by the metopic (frontal) suture. Metopism is the condition of having a persistent metopic suture.