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The edge or border; the edge of a body of water where it meets the land. As applied to a boundary line of land, the margin of a river, creek, or other watercourse means the center of the stream. But in the case of a lake, bay, or natural pond, the margin means the line where land and water meet.In finance, the difference between market value of loan collateral and face value of loan.

A sum of money, or its equivalent, placed in the hands of a Broker by the principal or person on whose account a purchase or sale of Securities is to be made, as a security to the former against losses to which he or she may be exposed by subsequent fluctuations in the market value of the stock. The amount paid by the customer when he uses a broker's credit to buy a security.

In commercial transactions the difference between the purchase price paid by an intermediary or retailer and the selling price, or difference between price received by manufacturer for its goods and costs to produce. Also called gross profit margin.

West's Encyclopedia of American Law, edition 2. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Achieving negative proximal surgical margins in the surgical management of HC is often challenging.
In this article, we describe our study to determine if adjunctive RT had an effect on disease-free survival in patients with oral SCC who were found to have close surgical margins after tumor resection.
Positive surgical margins were reported in three patients at permanent sections, although all frozen sections were free of cancer in group 2.
We did not obtain similar reduction in the rates of compromised surgical margin, probably because of the smaller sample.
Frozen section is a technique which ensures clean surgical margins during excision.
Predictors of success for Radical prostatectomy (RP) in locally advanced prostate cancer: RP is considered as a standard of care for organ confined disease but traditionally it has been discouraged as a definitive treatment option for locally advanced prostate cancer because of the concern of positive surgical margins, increased risk of lymph node metastasis, local and distant relapse and consequently death from prostate cancer.7
Surgical margins were involved by the tumor and the overlying mucosa was intact.
Keep in mind when treating basal cell carcinomas (BCC) or squamous cell carcinomas (SCC) that the presence of high-risk characteristics may require larger surgical margins. The cure rates are lower for higher-risk BCCs, such as lesions that have morphea-form morphology or aggressive histologic features, or those that are [greater than or equal to] 2 cm, recurrent, or located on the lips or paranasal or periocular regions.
Therefore, adjuvant therapy was not done in this case although the surgical margin was positive.
Yang, "Treatment of the positive surgical margin following radical prostatectomy," Chinese Medical Journal, vol.
All surgical margins were microscopically free of tumor; however, the tumor on the right was noted to be close to the deep subcutaneous surgical margin.