| ATL | Achilles tendon lengthening; acute T-cell leukemia; adult T-cell leukemia; anterior tricuspid leafle... |
|---|---|
| atyp | atypical |
| ATZ | atypical transformation zone |
| FAMMM | familial atypical multiple mole-melanoma [syndrome] |
| PAP | pancreatitis-associated protein; Papanicolaou [test]; papaverine; passive-aggressive personality; pa... |
| pseudoneurotic schizophrenia | Schizophrenia in which the underlying psychotic process is masked by complaints ordinarily regarded as neurotic. (05 Mar 2000) |
|---|---|
| psychosis, schizophrenia | The most chronic and disabling of the major mental illnesses. Schizophrenia may be one disorder, or it may be many disorders, with different causes. Because of the disorder's complexity, few generalisations hold true for all people who are diagnosed as schizophrenic. (12 Dec 1998) |
| simple schizophrenia | Schizophrenia characterised by withdrawal, apathy, indifference, and impoverishment of human relationships without overt psychotic features. (05 Mar 2000) |
| disorganised schizophrenia | A severe form of schizophrenia characterised by the predominance of incoherence, blunted, inappropriate or silly affect, and the absence of systematised delusions. Synonym: hebephrenic schizophrenia. (05 Mar 2000) |
| latent schizophrenia | A preexisting susceptibility for developing overt schizophrenia under strong emotional stress. (05 Mar 2000) |
| atypical | Irregular, not conformable to the type, in microbiology, applied specifically to strains of unusual type. Origin: Gr. Typos = type or model (16 Dec 1997) |
| atypical absence seizure | An absence seizure associated with an EEG pattern of irregular or slow spike and wave at less than 2.5 Hz or paroxysmal fast activity on an abnormally slow background EEG. (05 Mar 2000) |
| atypical achromatopsia | Incomplete achromatopsia with normal visual acuity and no nystagmus. Compare: dyschromatopsia. (05 Mar 2000) |
| atypical bacterial forms | Microorganisms that have undergone greater changes than normal in morphology, physiology, or cultural characteristics. (12 Dec 1998) |
| atypical cell | Not usual, abnormal. Cancer is the result of atypical cell division. (09 Oct 1997) |
| atypical facial neuralgia | Periodic pain in any region of the face, teeth, tongue, and occasionally in the occipital or shoulder area, which lasts several minutes to several days but has no trigger point and lacks the paroxysmal character of tic douloureux. Synonym: atypical facial neuralgia. (05 Mar 2000) |
| atypical fibroxanthoma | A solitary, often ulcerated, small cutaneous benign tumour composed of foamy histiocytes, spindle cells, and bizarre giant cells; usually found on the exposed skin of older people; microscopically, atypical fibroxanthoma closely resembles malignant fibrous histiocytoma, but originates in the dermis. (05 Mar 2000) |
| atypical gingivitis | Intense hyperaemic oedema and inflammation of the gingiva resulting from a hypersensitivity reaction. A dense plasma cell infiltrate is seen in the lamina propria. Synonym: atypical gingivitis. (05 Mar 2000) |
| atypical lipoma | <tumour> Lipoma, occurring primarily in older men on the posterior neck, shoulders, and back, which is benign but microscopically atypical, containing giant cells with multiple overlapping nuclei forming a circle. Synonym: pleomorphic lipoma. (05 Mar 2000) |
| atypical measles | Sometimes severe, unusual clinical manifestation of natural measles virus infection in persons with waning vaccination immunity, particularly in those who had received formaldehyde-inactivated vaccine; an accelerated allergic reaction apparently resulting from an anamnestic antibody response, characterised by high fever, absence of Koplik's spots, a shortened prodromal period, atypical rash, and pneumonia. (05 Mar 2000) |