This study provides a new perspective and contribution to baldness surgery with follicular unit megasessions, and demonstrates an improvement that can be introduced into baldness surgery clinics with less morbidity and a low cost-to-benefit ratio. Further studies may improve the efficiency of the technique and allow digital programs to better evaluate the increase in hair density.

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4 Therapeutic.

Abdominoplasty is a very common procedure, especially for patients with abdominal laxness, striaes, and muscle rectus diastases. With the advent of liposuction 28 years ago, we can improve body contouring by treating lipodystrophies in the epigastric, flank, trochanteric, and buttocks areas. With the patient in a sitting position, we estimate the amount of skin to be resected and outline the extension of the inferior suprapubic incision by the inguinal groove extremities. Epidural anesthesia via catheter is usually used, with bandage compression on the legs to prevent thrombovenous embolism. The first surgical step consists of releasing the superior abdomen wall with an assisted mechanical cannula liposuction procedure, originally described by Saldanha [19] and Avelar [20]. The incision starts in the supraumbilical area and goes to the xiphoid appendix through a narrow tunnel. The patient is placed in a Fowler position, and the superior flap is pulled down to assess whether it will reach the suprapubic line. This maneuver is important to ensure an accurate estimate of the amount of skin needed to be resected without stretching. We then trim the umbilical stack and a block resection of the entire infra-abdominal flap is done. Demarcation of the new umbilicus orifice is done and adhesions stitches, as described by Baroudi [21] and Pollock [22], are placed. Intradermic sutures with longterm absorbable sutures and a compression garment finalize the surgery. Materials and MethodsThis surgery is indicated in patients with abdominal laxness, extensive striaes, rectus muscle diastases, and localized lipodystrophy, a very common pathology after pregnancy and also in postbariatric surgical patients (Fig. 1).

Background Photobiomodulation is widely studied for its potential benefits in the wound healing process. Numerous scientific studies have highlighted its effect on various phases of wound repair, but clinical validations are few. This comparative trial aims to evaluate the influence of photobiomodulation on the post-abdominoplasty healing process. Methods Seventeen Caucasian women (aged 18-55) who underwent an abdominoplasty were enrolled in this doubleblinded, controlled clinical trial. The postoperative scars were divided into two areas; the right side of the scars was treated with ten sessions of photobiomodulation (consisting in three types of wavelengths). The other part of the scars was used as control and did not receive any additional treatment. Clinical assessments of both parts of the scars were scheduled at 1, 6 and 12 months postoperative. Results Within six months following surgery, significantly improved quality of the scars on the treated side compared with the untreated side was reported by patients and experienced professionals according to Vancouver Scar Scale, Patient and Observer Scar Assessment Scale (p \ 0.05) and standardized photographs (p \ 0.05). At 1 year of follow-up, patients observed no differences between the treated and untreated sides of the scars. This suggests that photobiomodulation appears to play an early role in the wound healing process, accelerating the first stages of cicatrization. Conclusion This study statistically validates the positive impact of photobiomodulation treatment on the first stages of the postoperative healing process. Carried out on Caucasians participants only, this study should, however, be performed on a more heterogeneous population to definitively confirm these effects on an international population. Clinical trial registry Registro Brasileiro de ensaios clı ´nicos: http://www.ensaiosclinicos.gov.br,Trial RBR-49PK78.