| radical operation for hernia | An operation by which the hernia is not only reduced, but the hernial defect is also repaired. (05 Mar 2000) |
|---|---|
| conservative | To preserve) designed to preserve health, restore function and repair structures by nonradical methods, as conservative surgery. Origin: L. Conservare (18 Nov 1997) |
| conservative replication | <molecular biology> Replication of DNA in such a way that the original parent strands of the DNA molecule end up back with each other. The entire preexisting double-stranded DNA molecule is conserved during each round of replication. Compare: semiconservative replication. (09 Oct 1997) |
| conservative substitution | In a gene product, a substitution of one amino acid with another with generally similar properties (size, hydrophobicity, etc), such that the overall functioning is likely not to be seriously affected. (18 Nov 1997) |
| conservative treatment | A course of therapeutic action designed to avoid harm, with less possibility of benefit than more risky actions. (05 Mar 2000) |
| acid radical | A radical formed from an acid by loss of one or more hydrogen ions; e.g., SO4-, NO3-. (05 Mar 2000) |
| radical | 1. <chemistry> An atom or or electrically neutral group that has one or more unpaired electrons. 2. <botany> Of leaves, clustered at the base of the stem. (09 Oct 1997) |
| radical cystectomy | Surgery to remove the bladder as well as nearby tissues and organs. (12 Dec 1998) |
| radical, free | In biochemistry, it is a group of atoms bonded together into an entity that is extremely reactive and shortlived. (a free radical is not a political extremist on parole.) (12 Dec 1998) |
| radical hysterectomy | Complete removal of the uterus, upper vagina, and parametrium. (05 Mar 2000) |
| radical mastectomy | <procedure, surgery> The surgical removal of the breast, part of the underlying pectoralmuscle and some or all of the lymph nodes under the armpit. (09 Oct 1997) |
| radical mastectomy, modified | Breast cancer treatment involving removal of the breast, lymph nodes (the glands ) in the armpit and associated skin and subcutaneous tissue. It differs from total radical mastectomy in that the pectoral (chest) muscles are preserved. (12 Dec 1998) |
| radical mastectomy, total | Breast cancer treatment involving removal of the breast, the pectoral (chest) muscles, lymph nodes (the glands ) in the armpit and associated skin and subcutaneous tissue. (12 Dec 1998) |
| radical mastoidectomy | An operation to exteriorise and join the mastoid air cells, the middle ear space, and the external meatus, often for extensive cholesteatoma. Synonym: tympanomeatomastoidectomy. (05 Mar 2000) |
| radical neck dissection | The most commonly performed major operation for head and neck malignancies, most of which are squamous cell carcinomas. The neck is opened laterally, the majority of the sternocleidomastoid muscle is removed, as are the regional cervical lymph nodes, the jugular vein, the spinal accessory nerve, the submaxillary gland and most of the parotid gland. There are several modifications. (12 Dec 1998) |