conservation

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con·ser·va·tion

(kon'ser-vā'shŭn),
1. Preservation from loss, injury, or decay.
2. In sensorimotor theory, the mental operation by which a person retains the idea of an object after its removal in time or space.
3. Presence of a gene in two different organisms.
4. The retention of structure with a variation in the environment, genetics, or other conditions.
[L. conservatio, a preserving, keeping]

conservation

(kon?ser-va'shon) [L. conservatio, keeping, preserving]
A cognitive principle, first described by Piaget, indicating that a certain quantity remains constant despite the transformation of shape. Children develop conservation ability for number, length, liquid amount, solid amount, space, weight, and volume.

breast conservation

Breast-conserving therapy.

conservation

the preservation, protection and management of an environment which takes into account recreational and aesthetic needs, in addition to preserving as much as possible of the natural fauna and flora and allowing for the harvesting of natural resources and agriculture. This necessitates the sensible planning of what is taken from the environment in terms of the yield of plants, animals and materials, whilst at the same time maintaining as much natural habitat as possible, and thus the largest possible GENE POOL.

con·ser·va·tion

(konsĕr-vāshŭn)
1. Preservation from loss, injury, or decay.
2. Retention of structure with a variation in environment or other conditions.
References in periodicals archive ?
And does the SA that now offers many good multidisciplinary units stand divided once again with the line firmly drawn between those clinicians who insist on breast conservation and those who don't.
Obtaining negative surgical margins has been shown to improve outcome after breast conservation.
Today, breast conservation surgery aims to excise tumors completely, along with a rim of surrounding healthy tissue.
Discuss breast conservation with him or her, ensuring you are fully aware whether a lumpectomy or a full mastectomy is the best option for you and weigh up the possible risks and benefits.
Research has also demonstrated that BCS with radiation therapy affords the same survival rate as mastectomy for women with ductal carcinoma in situ, some of whom are perceived as optimal candidates for breast conservation (Boyages, Delaney, and Taylor 1999; Fisher, Dignam, Tan-Chiu, et al.
The study, "A Safety and Efficacy Study of Intra-Operative Radiation Therapy (IORT) Using the Xoft Axxent eBx System at the Time of Breast Conservation Surgery for Early-Stage Breast Cancer," is a prospective, multi-center, historical control trial.
Another study that was presented at the meeting, A single institution's randomized double armed prospective study of lumpectomy margins with adjunctive use of the MarginProbe in nonpalpable breast cancers, 46 patients who elected breast conservation surgery (BCS) enrolled in the study.
The results of our study support the importance of regular screening in the under-50 age group and confirm that annual mammography improves the chances of breast conservation should breast cancer develop," he added.
Breast conservation surgery was attempted in more women in the prophylactic mastectomy group (28%, compared with 16%; Pless than .
Of the 583 who underwent breast conservation surgery and radiation therapy for DCIS, most received 50 Gy of radiation in 25 fractions, and 21% received a boost.
Breast conservation surgery remains an option in many cases of breast cancer diagnosed in high-risk predisposition gene carriers.
The Company's focused heat treatment, once commercialized, may be in a position to help breast cancer patients to improve their chance of receiving breast conservation surgery, thus reducing the need for mastectomy.

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