| cloverleaf skull | <syndrome> Intrauterine bone dysplasia and synostosis of the coronal and lambdoid sutures producing a trilobar head shape, due to premature fusion (craniosynostosis) of all sutures. This produces various craniofacial and long-bone anomalies. The condition is sporadic; no evidence to suggest a genetic cause although there may be some hereditary in Crouzon syndrome. (20 Jun 2000) |
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| cloverleaf skull syndrome | <syndrome> Intrauterine bone dysplasia and synostosis of the coronal and lambdoid sutures producing a trilobar head shape, due to premature fusion (craniosynostosis) of all sutures. This produces various craniofacial and long-bone anomalies. The condition is sporadic; no evidence to suggest a genetic cause although there may be some hereditary in Crouzon syndrome. (20 Jun 2000) |
| single lucent skull lesion | <radiology> Mnemonic: HELP ME, haemangioma, epidermoid / dermoid, leptomeningeal cyst, lambdoid suture defect, Paget's (osteoporosis circumscripta), post-surgical, metastasis (solitary), eosinophilic granuloma, encephalocele (12 Dec 1998) |
| skull | A school, company, or shoal. "A knavish skull of boys and girls did pelt at him." "These fishes enter in great flotes and skulls." (Holland) See: School a multitude. 1. <anatomy> The skeleton of the head of a vertebrate animal, including the brain case, or cranium, and the bones and cartilages of the face and mouth. In many fishes the skull is almost wholly cartilaginous but in the higher vertebrates it is more or less completely ossified, several bones are developed in the face, and the cranium is made up, wholly or partially, of bony plates arranged in three segments, the frontal, parietal, and occipital, and usually closely united in the adult. 2. The head or brain; the seat of intelligence; mind. "Skulls that can not teach, and will not learn." (Cowper) 3. A covering for the head; a skullcap. "Let me put on my skull first." (Beau & Fl) 4. A sort of oar. See Scull. Skull and crossbones, a symbol of death. See Crossbones. Origin: OE. Skulle, sculle, scolle; akin to Scot. Skull, skoll, a bowl, Sw. Skalle skull, skal a shell, and E. Scale; cf. G. Hirnschale, Dan. Hierneskal. Cf. Scale of a balance. Source: Websters Dictionary (01 Mar 1998) |
| skull base | The internal and external base of the cranium: respectively the inner and outer surfaces of the inferior region of the skull. The internal base constitutes the floor of the cranial cavity. (12 Dec 1998) |
| skull base neoplasms | Neoplasms of the base of the skull specifically, differentiated from neoplasms of unspecified sites or bones of the skull (skull neoplasms). (12 Dec 1998) |
| skull neoplasms | Neoplasms of the bony part of the skull. (12 Dec 1998) |
| natiform skull | Palpable bony nodules on the surface of the skull in infants with congenital syphilis. (05 Mar 2000) |
| increased skull thickness | <radiology> Generalised, chronic severe anaemia (e.g. Thalassaemia, SSD), cerebral atrophy following shunting of hydrocephalus, Engelmann disease: mainly skull base, hyperparathyroidism, acromegaly, osteopetrosis, chronic dilantin ingestion focal, meningioma, fibrous dysplasia, Dyke-Davidoff syndrome, hyperostosis frontalis interna, metastases (12 Dec 1998) |
| inner table of skull | The inner compact layer of the cranial bones. Synonym: lamina interna cranii. (05 Mar 2000) |
| internal base of skull | <anatomy> The interior aspect of the skull base on which the brain rests; the floor of the cranial cavity. See: base of skull. Synonym: basis cranii interna. (05 Mar 2000) |
| outer table of skull | The outer compact layer of the cranial bones. Synonym: lamina externa cranii. (05 Mar 2000) |
| tower skull | A type of craniosynostosis in which there is premature closure of the lambdoid and coronal sutures, resulting in an abnormally high, peaked, or conically shaped skull. Synonym: acrocephalia, acrocephaly, hypsicephaly, hypsocephaly, oxycephalia, steeple skull, tower skull, turricephaly. Origin: G. Oxys, pointed, + kephale, head (05 Mar 2000) |
| external base of skull | External aspect of the base of skull Synonym: norma basilaris, basis cranii externa, norma inferior, norma ventralis. (05 Mar 2000) |
| lacunar skull | <radiology> Also known as: craniolacunia, mesenchymal dysplasia, may appear normal after several yrs associated with: Chiari malformation (almost always !), myelomeningocele, encephalocele in contrast, increased intracranial pressure has: beaten-silver appearance, closed sutures, with or without abnormal skull size (Lueckenschaedel) (12 Dec 1998) |