| hot spleen | <radiology> Decreased liver uptake, liver disease (e.g., cirrhosis), shunting of portal venous blood, increased splenic uptake, haematopoietic disease, septicaemia, rheumatoid disorders, immunostimulation (tumour, Aldomet, IL-2) see: liver-spleen scan (12 Dec 1998) |
|---|---|
| hot spot | <molecular biology> A particular area of DNA which is especially prone to spontaneous mutations or recombinations. (09 Oct 1997) |
| hot thyroid nodule | <radiology> Almost always hyperfunctioning adenoma, vast majority benign, up to 50% are autonomous see also: thyroid carcinoma, cold thyroid nodule (12 Dec 1998) |
| basal skull fracture | <orthopaedics> A fracture involving the base of the cranium. This fracture is often difficult to detect clinically. Findings may include raccoon eyes, Battle's sign, haemotympanum and cerebrospinal fluid rhinorrhoea. Plain skull X-ray will often not reveal the basal skull fracture, making a CT scan or MRI the most reliable diagnostic investigation. (15 Nov 1997) |
| base of skull | The sloping floor of the cranial cavity. It comprises both the external base of skull (external view) and the internal base of skull (internal view). See: internal base of skull. Synonym: basis cranii, cranial base. (05 Mar 2000) |
| bones of skull | The paired inferior nasal concha, lacrimal, maxilla, nasal, palatine, parietal, temporal, and zygomatic; and the unpaired ethmoid, frontal, occipital, sphenoid, and vomer. Synonym: ossa cranii, cranial bones. (05 Mar 2000) |
| maplike skull | Various defects in the skull, especially in the temporal bone, the anterior fossa, and orbits, forming irregular outlines resembling the national boundaries in an atlas. (05 Mar 2000) |
| roof of skull | <anatomy> The skull cap, roof of the skull (27 Sep 1997) |
| closed skull fracture | Fracture with intact overlying scalp and/or mucous membranes. Synonym: simple skull fracture. (05 Mar 2000) |
| 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) |
| 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) |
| comminuted skull fracture | A fracture of the skull with fragmentation of bone. (05 Mar 2000) |
| compound skull fracture | A fracture with laceration of overlying scalp and/or mucous membrane. Synonym: compound skull fracture. (05 Mar 2000) |
| simple skull fracture | Fracture with intact overlying scalp and/or mucous membranes. Synonym: simple skull fracture. (05 Mar 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) |