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Compared with traditional (nonendoscopic) transaxillary submuscular techniques for breast augmentation, endoscopic techniques are associated with a decreased risk for which of the following? (A) Capsular contracture
Transaxillary breast augmentation is an established technique that allows the
surgeon to make the incision in an aesthetically acceptable area, where it can
be hidden. However, one disadvantage of traditional transaxillary augmentation
is a lack of visualization of the implant pocket, necessitating blind, blunt
dissection at the origin of the pectoral muscle. This limitation may result
in improper implant placement, leading to malpositioning of the implant and
poor aesthetic results in some patients. In contrast, endoscopic transaxillary
augmentation allows the surgeon to divide the origin of the pectoral muscle
under direct visualization, thereby effectively lowering the inframammary crease.
Elongation and laxity of which of the following structures are most likely to result in breast ptosis? (A) Clavipectoral fascia
Patients with breast ptosis have drooping of the breast parenchyma, skin, and/or nipple-areola complex occurring as a result of aging, pregnancy, lactation, or weight loss. Anatomically, ptosis is caused by disruption or elongation of Cooper’s ligaments, which are fibrous projections that arise from the breast tissue and fuse with the superficial fascia and dermis of the breast. These ligaments attach the breast parenchyma to the overlying skin. Tumors can stretch these ligaments and cause dimpling and retraction of the skin. Several mastopexy techniques have used absorbable meshes, deep anchoring sutures, or crossing parenchymal slings in an attempt to recreate the tight Cooper’s ligaments and thus correct the ptosis. However, scarring and recurrence of ptosis are frequent complications. The clavipectoral fascia covers the axilla and pectoralis minor muscle; this layer is encountered during axillary dissection. The costoclavicular ligaments anchor the clavicle to the chest beneath the medial superior pole of the breast, but do not enter the breast parenchyma. The superficial fascia of the breast is a filmy, white layer of connective tissue located 2 to 15 mm deep to the skin. The deep layer of the superficial fascia envelopes the breast posteriorly. A loose areolar plane is present between the superficial fascia of the breast and the deep fascia of the pectoralis muscle, and facilitates removal of the breast from the pectoralis muscle during mastectomy. The superficial fascia of the pectoralis muscle covers the muscle but does not extend into the breast.
In women undergoing augmentation mammaplasty with saline-filled implants, which of the following techniques is most likely to decrease the longevity of the implant and lead to early rupture? (A) Underfilling of the implants below the manufacturer’s recommended
minimum
Some studies have also shown that implant longevity can be maximized by filling the implants to the volume at which they exhibit the least wrinkles, even if it exceeds the manufacturer’s maximum recommended volume. However, this technique, known as “overfill,” is not recommended.
Which of the following techniques is indicated to preserve sensation to the nipple-areola complex in a patient undergoing augmentation mammaplasty? (A) Avoiding periareolar incisions
Performing blunt dissection lateral to the lateral edge of the pectoralis muscle only is indicated to preserve sensation to the nipple-areola complex. The fourth and fifth anterolateral intercostal nerves primarily supply sensation to the nipple-areola complex; these nerves perforate the fascia just lateral to the pectoralis muscle through the interdigitation of the serratus anterior muscle. By performing blunt dissection only lateral to the pectoralis muscle, these nerves are stretched but not cut. Although the stretching of sensory nerves may still result in loss of sensation, it is more likely to be temporary than if the nerves are cut sharply. Periareolar incisions do not disrupt the sensory innervation to the nipple-areola complex. It is not necessary to identify and tag the sensory nerves as they exit the fascia. The positioning of the implant (whether subpectoral or subglandular) and the type of dissection performed in the superior aspect of the pocket also will not affect sensation.
In a 50-year-old woman who underwent augmentation mammaplasty with silicone implants 12 years ago, a silicone granuloma is noted in the axillary region on clinical examination. Which of the following statements best characterizes this finding? (A) Silicone granulomas are a frequent complication following augmentation
mammaplasty or reconstruction with silicone implants
Although silicone granulomas are a well-recognized tissue response to the presence of foreign material, such as silicone, these granulomas are found only rarely in patients who have undergone augmentation mammaplasty or reconstruction with silicone gel breast implants. Any granulomas that are detected should be resected if they are symptomatic or of diagnostic concern. No evidence has been presented in peer-reviewed scientific literature to support the theory that silicone granulomas help to cause implant-related systemic disease, and in fact the existence of implant-related systemic disease is controversial in itself.
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