| RI | radiation intensity; radioactive isotope; radioimmunology; recession index; recombinant inbred [stra... |
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| SI | International System of Units [Fr. le Systeme International d'Unites]; sacroiliac; saline infusion; ... |
| AI | accidental injury; accidentally incurred; adiposity index; aggregation index; allergy and immunology... |
| CMI | carbohydrate metabolism index; care management integration; case mix index; cell-mediated immunity; ... |
| CSI | calculus surface index; cancer serum index; cavernous sinus infiltration; cervical spine injury; che... |
| status cribrosus | A condition marked by dilations of the perivascular spaces in the brain. (05 Mar 2000) |
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| status criticus | A very severe and persistent form of crisis in tabes dorsalis. (05 Mar 2000) |
| status dysmyelinisatus | <neurology, syndrome> A progressive hereditary disorder with marked reduction in the number of myelin sheaths of the globus pallidus and substantia nigra with accumulation of iron pigment. Manifestations include dysarthria, progressive mental deterioration, and corticospinal and extrapyramidal motor signs. CT findings: high-signal lesions in globus pallidus bilaterally. MRI findings: (T2-weighted spin-echo), hypointensity in globus pallidus (iron accumulation), small area of hyperintensity in internal segment (so-called eye of the tiger sign) corresponding to area of gliosis and vacuolation. Inheritance: autosomal recessive. (20 Mar 2000) |
| status dysraphicus | A condition in which there is failure of fusion of midline structures; related to syringomyelia and perhaps to Marfan's syndrome or arachnodactyly. Synonym: arrhaphia. (05 Mar 2000) |
| status epilepticus | A series of rapidly repeated seizures without regaining consciousness between them. (12 Dec 1998) |
| status hemicranicus | A condition in which attacks of migraine succeed each other with such short intervals as to be almost continuous. (05 Mar 2000) |
| status hypnoticus | Rarely used term for hypnosis. (05 Mar 2000) |
| status lacunaris | A condition, occurring in cerebral arteriosclerosis, in which there are numerous small areas of degeneration in the brain. (05 Mar 2000) |
| status lymphaticus | Old term for a syndrome of supposed enlargement of the thymus and lymph nodes in infants and young children, formerly believed to be associated with unexplained sudden death; it was also erroneously believed that pressure of the thymus on the trachea might cause death during anaesthesia. Prominence of these structures is now considered normal in young children, including those who have died suddenly without preceding illnesses that might lead to atrophy of lymphoid tissue. See: sudden infant death syndrome. Synonym: status lymphaticus, status thymicus. (05 Mar 2000) |
| status marmoratus | A congenital condition due to maldevelopment of the corpus striatum associated with choreoathetosis, in which the striate nuclei have a marblelike appearance caused by altered myelination. (05 Mar 2000) |
| status nervosus | Rarely used term for an erethistic or typhoidal state. Synonym: status nervosus. (05 Mar 2000) |
| status novus | New status, representing a change in status. (09 Jan 1998) |
| status praesens | An obsolete term for the part of the history of a case describing the condition of the patient at the time when he comes under observation. (05 Mar 2000) |
| status raptus | Rarely used term for ecstasy. (05 Mar 2000) |
| status spongiosus | Multiple fluid-filled spaces of microscopic size in the cerebral white matter; seen in certain hypoxic, toxic, and metabolic diseases. (05 Mar 2000) |