| uncertain | 1. Not certain; not having certain knowledge; not assured in mind; distrustful. "Man, without the protection of a superior Being, . . . Is uncertain of everything that he hopes for." (Tillotson) 2. Irresolute; inconsonant; variable; untrustworthy; as, an uncertain person; an uncertain breeze. "O woman! in our hours of ease, Uncertain, coy, and hard to please!" (Sir W. Scott) 3. Questionable; equivocal; indefinite; problematical. "The fashion of uncertain evils." "From certain dangers to uncertain praise." (Dryden) 4. Not sure; liable to fall or err; fallible. "Soon bent his bow, uncertain in his aim." (Dryden) "Whistling slings dismissed the uncertain stone." (Gay) Synonym: See Precarious. Origin: Pref. Un- + certain. Cf. Incertain. Source: Websters Dictionary (01 Mar 1998) |
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| neoplasms, unknown primary | Metastases in which the tissue of origin is unknown. (12 Dec 1998) |
| fever of unknown origin | Fever in which the aetiology cannot be ascertained. (12 Dec 1998) |
| behaviour and behaviour mechanisms | The observable response made to a situation and the unconscious processes underlying it. (12 Dec 1998) |
| antibodies, neoplasm | Immunoglobulins induced by antigens specific for tumours other than the normally occurring histocompatibility antigens. (12 Dec 1998) |
| antigens, neoplasm | Proteins, glycoprotein, or lipoprotein moieties on surfaces of tumour cells that are usually identified by monoclonal antibodies. Many of these are of either embryonic or viral origin. (12 Dec 1998) |
| brain neoplasm | Neoplasms of the part of the central nervous system contained within the cranium. (12 Dec 1998) |
| genes, structural, neoplasm | DNA sequences that code for RNA and for the proteins required for the enzymatic and structural function of neoplastic cells. (12 Dec 1998) |
| mucinous cystic neoplasm of pancreas | <radiology> = macrocystic adenoma of pancreas, cystadenoma / cystadenocarcinoma, M:F = 1:9, 40-60 years of age, malignant or pre-malignant, large mass (mean 12 cm), multilocular cysts, thick septations, tail / body in 85% (unlike adenocarcinoma and microcystic adenoma), hypo-/avascular, Differential diagnosis: panc pseudocyst, ** Cf: microcystic adenoma (12 Dec 1998) |
| histoid neoplasm | Old term for a neoplasm characterised by a cytohistologic pattern that closely resembles the tissue from which the neoplastic cells are derived. (05 Mar 2000) |
| neoplasm | <oncology, pathology> New and abnormal growth of tissue, which may be benign or cancerous. (16 Dec 1997) |
| neoplasm circulating cells | Exfoliate neoplastic cells circulating in the blood and associated with metastasizing tumours. (12 Dec 1998) |
| neoplasm: gallium imaging | <radiology> Useful: Hodgkin disease and histiocytic form of NHL poor sensitivity below the diaphragm, Burkitt lymphoma: almost 100% sensitivity, hepatoma: 90% sensitivity, melanoma: 90% sensitivity, leukaemia possibly useful: NHL: good for large and mediastinal lesions, nodal metastases from seminoma and embryonal cell carcinoma: 87% sensitivity, non-small cell lung CA: 85% sensitive not useful: head and neck, GI (especially adenocarcinoma), breast, gynaecological, kiddie tumours see: gallium: indications (12 Dec 1998) |
| neoplasm invasiveness | Ability of neoplasms to infiltrate and actively destroy surrounding tissue. (12 Dec 1998) |
| neoplasm metastasis | The transfer of a neoplasm from one organ or part of the body to another remote from the primary site. The ability to metastasize is characteristic of all malignant neoplasms. (12 Dec 1998) |