共查询到20条相似文献,搜索用时 0 毫秒
1.
2.
3.
The objectives of the augmentation prostheses are to increase the volume, enhance the shape, and improve the projection of
the breast. Since 1962, plastic surgeons have used the silicone gel-filled breast implant created by Cronin and Gerow [6].
The contents of the standard implant have been modified: silicone gel-filled, PVP, dextran, oil, saline hydrogel, etc. The
shell of the prostheses had been made with a smooth surface, textured silicone, and polyurethane-covered silicone. The shape
has been modified: In 1993, A. Miller patented the stacked breast implant used in breast reconstruction [7]. This contribution
tends to improve the projection of the breast. In 1994, the authors [1,3,4] described a new surgical procedure for locating
the standard implants named the double pocket technique. Simultaneously, the authors [2–5] modified the shape of the prosthesis
creating the double implant prostheses. 相似文献
4.
The International Breast Implant Registry (IBIR) was founded in 2002 under the auspices of the International Plastic, Reconstructive, and Aesthetic Surgery Foundation (IPRAF), the International Confederation for Plastic, Reconstructive, and Aesthetic Surgery (IPRAS), and the European and International Committee for Quality Assurance, Medical Technologies, and Devices in Plastic (EQUAM) on the basis of continuous discussion about the safety and compatibility of different breast implants. The IBIR aims to integrate and replace the already existing national breast implant registries. It also is assumed that the European Parliament, the Food and Drug Administration, and international organizations of plastic and aesthetic surgeons will postulate obligatory international breast implant registration. Currently, IBIR is in a pilot phase with the goal of understanding data collection issues and concerns in various countries whereby the data entered to date will be completely available in the final version. A well-established global registry represents an important tool of quality assurance. By publishing their experiences in applying the registry, the authors aim to encourage more plastic and aesthetic surgeons to submit their cases to the registry and thus enhance its value as a successful and powerful device. 相似文献
5.
6.
7.
Franco Bassetto Carlotta Scarpa Elio Caccialanza Maria Cristina Montesco Patrizia Magnani 《Aesthetic plastic surgery》2010,34(4):481-485
Background
Periprosthetic capsules are a common reaction of the body to silicone or polyurethane breast implants. The aim of this study was to evaluate similarities and differences in the histological features of periprosthetic capsules surrounding silicone implants and polyurethane foam-coated implants and to correlate those features with the age of the implants. 相似文献8.
SUMMARY: Triple-negative breast cancer (TNBC) is characterized by the lack of estrogen and progesterone receptors and the lack of HER2 expression or amplification. Much interest has recently been focused on these triple-negative (TN) subtypes because they may be aggressive and are more likely to recur and metastasize than other subtypes of breast cancer. TNBC accounts for approximately 10-24% of all breast cancer cases, and typically it occurs in younger patients and in patients with BRCA1 mutation. There is a substantial heterogeneity of TNBCs both at the morphological and the molecular level, but there are also common features, such as low tumor grade and accelerated tumor proliferation. Morphologically, TNBC may present as invasive ductal, metaplastic, medullary, apocrine, or other types. Molecularly, they are most frequently associated with a basal phenotype, but there is a distinct subgroup of cancers that are not of basal type and belong to the claudin-low or molecular-apocrine type. The basal phenotype is frequently associated with the loss of BRCA1. 相似文献
9.
Breast implants used for augmentation mammoplasty or breast reconstruction could rupture from various causes such as trauma
or spontaneous failure. The objectives of this study were to investigate the relationships between the causes of implant rupture
and the degree of capsular contracture, and then to evaluate the relative efficacies of specific signs on magnetic resonance
imaging (MRI) known to be beneficial for diagnosing the rupture. A retrospective review identified patients with prosthetic
implant rupture or impending rupture treated by the senior author. The 30 cases of implant rupture available for review were
classified into two groups: intracapsular and extracapsular ruptures. The 30 cases of breast implant ruptures were analyzed
with respect to the clinical symptoms and signs, the causes of rupture, the degree of capsular contracture, and therapeutic
plans. Among the 30 cases, 14 patients who had undergone MRI during the diagnostic period were analyzed with respect to the
relationships between MRI readings and operative findings. Spontaneous rupture of membranes was most common (80%), followed
by failure because of trauma (7%) and valve or implant base (4%). The symptoms during implant rupture were contour deformity,
palpated masslike lesions, pain, and focal inflammation. According to the analysis of specific MRI signs, the sensitivity
and specificity of the linguine sign were 87% and 100%, respectively, for intracapsular rupture. For extracapsular rupture,
the sensitivity and specificity of the linguine sign were, respectively, 67% and 75%. The sensitivity and specificity of the
rat-tail sign and tear drop sign were 14% and 50%, respectively.
Breast implant rupture was correlated with the degree of capsular contracture in our study. Among the various specific MRI
signs used in diagnosing the rupture, the linguine sign was reliable and had a high sensitivity and specificity, especially
in cases of intracapsular rupture. On the other hand, the rat-tail and tear drop signs were nonspecific signs for diagnosing
the rupture of breast implant. 相似文献
10.
11.
12.
13.
14.
15.
16.
17.
Martha Embrey Elizabeth E. Adams Bruce Cunningham Walter Peters V. Leroy Young George L. Carlo 《Aesthetic plastic surgery》1999,23(3):207-212
This pilot study's goal was to test the feasibility of a data collection form which will be used in a scale-up study analyzing
multiple surgeons' records. The goal of this expanded study will be to develop identifying factors for women who are at greater
risk for having ruptured implants and, if necessary, target them for screening, surveillance, or intervention. In the pilot
study, we compared factors associated with implant rupture in women with and without rupture. Similar studies have considered
one or a few factors at a time and, generally, have given little attention to implant generation. We developed a data collection
form after reviewing records of three surgeons. A total of 92 records was collected and analyzed. An important feature in
the pilot was to compare the results of patients whose implants the surgeons had both implanted and explanted (n= 34) with those of patients whose implants the surgeons had only explanted (n= 55) (unknown = 3). This comparison could show if including all explantation patients in a surgeon's practice would bias
the sample; however, based on this pilot data, concerns regarding this type of bias seem to be minimal. Similar amounts of
data (e.g., implant information, history of capsular contracture, etc.) were collectible on patients whose surgeons both implanted
and explanted them (87%) and who had different surgeons for implantation and explantation (84%). Though the data from this
limited sample cannot offer firm conclusions on rupture associations, a few factors stood out: size of implants (38.3% of
ruptured versus 15.9% of intact implants were 100–200 cm3), history of mammography (46.8% of ruptured versus 24.4% of intact had mammograms, which is likely due to older women with
older implants having more mammograms), and history of closed capsulotomy (85.1% of ruptured versus 68.9% of intact). Interestingly,
additional procedures performed on the breast (e.g., scar revision, wound repair, etc.) did not affect rupture: both the ruptured
and the intact groups had an average of 1.7 procedures performed. The data collection form tested very well in this pilot
study. Also, including all patients in the study sample, instead of excluding those who received their implants elsewhere,
did not change the results. Though there are not enough data to draw any firm conclusions regarding rupture factors, the collection
instrument was rigorously tested and should perform well in an expanded study. 相似文献
18.
19.
In planning a breast augmentation, the choice of an appropriate breast implant volume is sometimes a problem, particularly
for unskilled surgeons. The authors have used a little trick to make the choice easier for both the surgeon and the patient. 相似文献
20.
Choosing the right implant size for a specific patient is a challenging aspect of breast augmentation. Bust circumference
is obtained by measuring the chest circumference at the level of the nipple-areola complex. Pre- and postoperative bust circumference
measurements obtained from 147 patients who underwent primary bilateral breast augmentation using round, textured, gel-filled
implants were evaluated, and a practical reference list for future operations was developed. According to the results, each
additional 100 ml in implant size yielded an approximate 2-cm increase in bust circumference. The authors believe these results
gathered from systematic measurements may serve as a useful guide for choosing the right size implant for a satisfactory augmentation
procedure. 相似文献