Utility of high-resolution ultrasound in measuring subcutaneous fat thickness.

OBJECTIVE: Previous studies conclude that high-resolution ultrasound (HRUS) enables noninvasive and accurate measurements of subcutaneous fat thickness. The primary objective of this cross-sectional study was to better characterize subcutaneous fat thickness measurements in a diverse patient population using HRUS. Secondarily, we sought to correlate these measurements with patients' body image. METHODS: A cross-sectional study to measure subcutaneous fat measurements at seven distinct anatomic sites, including upper and lower extremities, submental, and torso regions, in 40 men and women of different ages and races using HRUS. Independent t-tests and analysis of variance were performed to analyze findings. RESULTS: In our patient population, on average, women had thicker subcutaneous fat than men at all anatomic sites. Asian patients had significantly reduced fat thickness at peripheral anatomic sites, such as arms when compared to patients who identified as Black and Other (p = 0.05 and p = 0.008, respectively). Lastly, women reported decreased total body satisfaction at all anatomic sites when compared to men. CONCLUSION: The information obtained and methods developed in this study may be utilized clinically during patient selection for fat reduction procedures, including for estimating the degree of likely benefit; for managing pathologies involving subcutaneous fat thickness alteration; and to monitor the progression of lipodystrophy secondary to disease or drugs.

Nonmelanoma Skin Cancer in Patients Older Than Age 85 Years Presenting for Mohs Surgery: A Prospective, Multicenter Cohort Study.

Importance: It has been suggested that Mohs surgery for skin cancer among individuals with limited life expectancy may be associated with needless risk and discomfort, along with increased health care costs. Objective: To investigate patient- and tumor-specific indications considered by clinicians for treatment of nonmelanoma skin cancer in older individuals. Design, Setting, and Participants: This multicenter, prospective cohort study was conducted using data from US private practice and academic centers. Included patients were those older than age 85 years presenting for skin cancer surgery and referred for Mohs surgery, with reference groups of those younger than age 85 years receiving Mohs surgery and those older than age 85 years not receiving Mohs surgery. Data were analyzed from November 2018 through January 2019. Exposures: Mohs surgery for nonmelanoma skin cancer. Main Outcomes and Measures: Reason for treatment selection. Results: Among 1181 patients older than age 85 years referred for Mohs surgery (724 [61.9%] men among 1169 patients with sex data; 681 individuals aged >85 to 88 years [57.9%] among 1176 patients with age data) treated at 22 sites, 1078 patients (91.3%) were treated by Mohs surgery, and 103 patients (8.7%) received alternate treatment. Patients receiving Mohs surgery were more likely to have tumors on the face (738 patients [68.5%] vs 26 patients [25.2%]; P < .001) and nearly 4-fold more likely to have high functional status (614 patients [57.0%] vs 16 patients [15.5%]; P < .001). Of 15 distinct reasons provided by surgeons for opting to proceed with Mohs surgery, the most common were patient desire for treatment with a high cure rate (712 patients [66.0%]), good or excellent patient functional status for age (614 patients [57.0%]), and high risk associated with the tumor based on histology (433 patients [40.2%]). Conclusions and Relevance: This study found that older patients who received Mohs surgery often had high functional status, high-risk tumors, and tumors located on the face. These findings suggest that timely surgical treatment may be appropriate in older patients given that their tumors may be aggressive, painful, disfiguring, and anxiety provoking.

Treatment of Surgical Scars With Combination Pulsed Dye and Fractional Nonablative Laser: A Randomized Controlled Trial.

OBJECTIVE: To assess the effectiveness and safety of combined pulsed-dye laser (PDL) and NAFL for treatment of surgical scars. SUMMARY BACKGROUND DATA: PDL and NAFL have not been compared to healing by time alone. METHODS: Randomized controlled, single-blinded clinical trial at an urban, university hospital. Healthy adults' status post skin surgery with primary closure were randomized to either 3 sessions of combination PDL and NAFL every 2 to 8 weeks, or control of no treatment. At baseline and 36-week follow-up, Patient and observer Scar Assessment Scale and Scar Cosmesis Assessment and Rating were completed by participants and blinded physicians. The primary outcome was scar improvement, as measured by the score difference over time. RESULTS: Of 76 participants, 52 completed the study (July 2017 to June 2019). No severe adverse events were reported. Patient and observer Scar Assessment Scale assessments demonstrated improvement in total score in the laser group compared to controls, as reported by patients [mean difference (standard deviation), laser: 12.86 (6.91) vs control: 7.25 (6.34); P = 0.004] and blinded physicians [18.32 (8.69) vs 13.08 (9.63); P = 0.044]. Patients observed a greater improvement in scar thickness [3.68 (2.04) vs 1.88 (1.85); P = 0.002] and stiffness [3.57 (2.78) vs 1.50 (2.11); P = 0.004] with lasers, and physicians reported greater improvement in vascularity [3.71 (1.98) vs 1.71 (1.52); P = 0.0002]. The live Scar Cosmesis Assessment and Rating subscore for erythema improved significantly with lasers [1.04 (0.79) vs 0.42 (0.50); P = 0.001]. CONCLUSIONS AND RELEVANCE: Combined PDL and NAFL resulted in scar improvement. Scar thickness, stiffness, and erythema were improved. TRIAL REGISTRATION: ClinicalTrials.gov (NCT03057964).

Office practices that may improve the experience of the cosmetic dermatology patient.

Patients presenting for cosmetic dermatology procedures are often interested in lifestyle enhancement rather than treatment of an inflammatory or neoplastic disease or condition. In addition to good clinical outcomes, they may also particularly value the quality of the patient experience in the dermatology office. A list of beneficial practices that may improve patient experience was generated by interviewing staff members from several US practices, including clinic administrators, nurses, nurse managers, medical assistants, physician assistants, patient care coordinators, and dermatologists. Each was asked ten open-ended questions. The list of beneficial practices thereby obtained was ordered based on the number of participants who recommended each practice. Practices were further categorized into four categories: clinician improvement, administrative improvement, clinic improvement, and team improvement. For clinics providing cosmetic dermatology services, certain well-accepted beneficial practices may improve patient experience.

Patients believe that cosmetic procedures affect their quality of life: An interview study of patient-reported motivations.

BACKGROUND: Although treatments to address cosmetic concerns are common, patients' self-reported motives for considering such procedures have not been systematically explored. OBJECTIVE: To develop a framework of categories to describe patients' self-reported motivations for undergoing minimally invasive cosmetic procedures. METHODS: Face-to-face, semistructured patient interviews were conducted with adult participants who had undergone or were considering minimally invasive cosmetic dermatologic procedures. A qualitative constant comparative approach was used to analyze interview transcripts, yielding themes and subthemes. RESULTS: A total of 30 interviews were completed. Most patient-reported motivations for cosmetic procedures could be subsumed under 8 general categories (themes): (1) mental and emotional health, (2) cosmetic appearance, (3) physical health, (4) work and/or school success, (5) social well-being, (6) cost and/or convenience, (7) procedural perceptions, and (8) timing of treatment. Many individual motivations in these categories were unrelated to desire for physical beauty. In particular, participants wanted to avoid being self-conscious, enhance confidence, reduce the time and expense required to conceal physical imperfections, and be perceived as capable at work. LIMITATIONS: Only English-speaking patients in the United States were interviewed. CONCLUSION: Patient-reported motivations for cosmetic procedures mostly pertained to physical and psychosocial well-being. Indeed, a desire for improved cosmetic appearance was only 1 of the 8 themes revealed through the patient interviews.

Quantitative evaluation of skin shrinkage associated with non-invasive skin tightening: a simple method for reproducible linear measurement using microtattoos.

Non-invasive skin-tightening devices can induce thermal denaturation and skin shrinkage via externally applied radiofrequency emissions or high-frequency ultrasound. Therefore, the purpose of this study is to develop and test a method for measurement of skin reduction associated with application of such energy devices. Twenty-five healthy participants with mild to moderate skin laxity of the arms were enrolled. Pinpoint microtattoos were placed at each of the treatment sites to delineate two 6 × 12 cm rectangles per subject. A non-stretchable filament, tape and marking pen apparatus was used to measure the size of each rectangle before treatment and at follow-up visit by two blinded investigators. After randomization, one side received a single pass with a radiofrequency device (6.78 MHz), while the contralateral side received multiple passes. Participants underwent two treatment sessions to each side 2 weeks apart, and returned for follow-up 4 weeks after the second treatment. Length and area measurement were analyzed to assess precision and accuracy of measurements and to compare efficacy of treatment between pre- and post-treatment. Concordance correlation coefficients (CCC) demonstrated substantial inter-investigator reliability and precision in length measurements (CCC, 0.94 to 0.98 in pre-treatment; 0.95 to 0.98 in post-treatment). Measurements at the 6-week post-treatment follow-up demonstrated a statistically significant skin reduction in all six of the measured parameters. A simple skin measurement method requiring minimal instrumentation can quantitatively evaluate skin shrinkage associated with non-invasive skin-tightening devices.

Self-reported Patient Motivations for Seeking Cosmetic Procedures.

Importance: Despite the growing popularity of cosmetic procedures, the sociocultural and quality-of-life factors that motivate patients to undergo such procedures are not well understood. Objective: To estimate the relative importance of factors that motivate patients to seek minimally invasive cosmetic procedures. Design, Setting, and Participants: This prospective, multicenter observational study was performed at 2 academic and 11 private dermatology practice sites that represented all US geographic regions. Adult patients presenting for cosmetic consultation or treatment from December 4, 2016, through August 9, 2017, were eligible for participation. Exposures: Participants completed a survey instrument based on a recently developed subjective framework of motivations and a demographic questionnaire. Main Outcomes and Measures: Primary outcomes were the self-reported most common motivations in each quality-of-life category. Secondary outcomes were other frequently reported motivations and those associated with specific procedures. Results: Of 529 eligible patients, 511 agreed to participate, were enrolled, and completed the survey. Typical respondents were female (440 [86.1%]), 45 years or older (286 [56.0%]), white (386 [75.5%]), and college educated (469 [91.8%]) and had previously received at least 2 cosmetic procedures (270 [52.8%]). Apart from motivations pertaining to aesthetic appearance, including the desire for beautiful skin and a youthful, attractive appearance, motives related to physical health, such as preventing worsening of condition or symptoms (253 of 475 [53.3%]), and psychosocial well-being, such as the desire to feel happier and more confident or improve total quality of life (314 of 467 [67.2%]), treat oneself or celebrate (284 of 463 [61.3%]), and look good professionally (261 of 476 [54.8%]) were commonly reported. Motivations related to cost and convenience were rated as less important (68 of 483 [14.1%]). Most motivations were internally generated, designed to please the patients and not others, with patients making the decision to undergo cosmetic procedures themselves and spouses seldom being influential. Patients younger than 45 years were more likely to undertake procedures to prevent aging (54 of 212 [25.5%] vs 42 of 286 [14.7%] among patients ≥45 years; P < .001). Patients seeking certain procedures, such as body contouring (19 of 22 [86.4%]), acne scar treatment (36 of 42 [85.7%]), and tattoo removal (8 of 11 [72.7%]), were more likely to report psychological and emotional motivations. Conclusions and Relevance: This initial prospective, multicenter study comprehensively assessed why patients seek minimally invasive cosmetic procedures. Common reasons included emotional, psychological, and practical motivations in addition to the desire to enhance physical appearance. Differences relative to patient age and procedures sought may need further exploration.

Effect of Stress Ball Use or Hand-holding on Anxiety During Skin Cancer Excision: A Randomized Clinical Trial.

Importance: Patients undergoing skin surgery under local anesthesia can experience anxiety. Adjuvant intraoperative anxiety reduction methods may help. Objectives: To assess whether hand-holding or holding a stress ball reduces patient anxiety during excisional surgery of head or neck skin cancer with the patient under local anesthesia and to measure pain and patient satisfaction. Design, Setting, and Participants: In this nonblinded, single-center randomized clinical trial, performed from January 24 through April 26, 2017, at a dermatology outpatient service in an urban, academic medical center, a consecutive sample of 135 adults who required excisional removal of nonmelanoma skin cancer of the head or neck was randomized and studied. Interventions: Participants were randomized 1:1:1 to 3 groups: hand-holding, stress ball, or control (treatment as usual). Participants in the hand-holding group had a female researcher hold one of their hands during administration of anesthesia and extirpation, and those in the stress ball group held a round compressible ball and squeezed it as desired during the same period. Main Outcomes and Measures: The primary outcome was anxiety, measured by a visual analog scale (VAS), 6-item State Trait Anxiety Inventory (STAI), and physiologic measures (blood pressure and heart rate). Secondary outcomes were pain during the procedure and overall participant satisfaction. In addition, participants were asked how many hours they spent researching the procedure before surgery. Results: A total of 135 participants, 45 per study arm, were enrolled (mean [SD] age, 65.5 [13.9] years; 84 [62.2%] male; 134 [99.3%] white). There were no withdrawals or dropouts. Anxiety decreased over time in all groups, but no significant differences were found in the 3 anxiety measures across the 3 groups (VAS anxiety score before: control group, 3.11; hand-holding group, 3.04; stress ball group, 3.09 [P > .99]; VAS anxiety score during: control group, 1.89; hand-holding group, 2.31; stress ball group, 2.47 [P = .55]; STAI score: control group, 8.91; hand-holding group, 8.93; stress ball group, 8.76 [P = .96]). The 3 groups also did not significantly differ in postprocedure pain scores (control group, 0.78; hand-holding group, 0.64; stress ball group, 0.67; P = .85). Almost all participants (134 [99.2%]) were very satisfied. Participants who had done research had higher preoperative VAS anxiety scores (researched, 3.84; did not research, 2.62; P = .04). Conclusions and Relevance: Hand-holding and squeezing a stress ball do not appear to provide incremental anxiety reduction in patients during excisional skin cancer surgery. It is possible that some subgroups may respond better or that patients may respond better when able to select and tailor their preferred anxiety reduction method. Trial Registration: ClinicalTrials.gov identifier: NCT02816996.

Effectiveness of Low Doses of Hyaluronidase to Remove Hyaluronic Acid Filler Nodules: A Randomized Clinical Trial.

Importance: Although hyaluronidase is known to remove hyaluronic acid fillers, use of low doses has not been well studied. Objective: To assess the effectiveness and dose-related effect of small quantities of hyaluronidase to treat hyaluronic acid filler nodules. Design, Setting, and Participants: Split-arm, parallel-group, randomized clinical trial at an urban academic center. Participants were 9 healthy women. Recruitment and follow-up occurred from February 2013 to March 2014; data analysis occurred from February to July 2016. Interventions: Each participant received aliquots (buttons) of either of 2 types of hyaluronic acid fillers into bilateral upper inner arms, respectively. At 1, 2, and 3 weeks each button was treated with a constant volume (0.1 mL) of variable-dose hyaluronidase (1.5, 3.0, or 9.0 U per 0.1 mL) or saline control. Main Outcomes and Measures: Both a blinded dermatologist and the participant independently assessed detectability. Results: Seventy-two treatment sites on 9 women (mean [SD] age, 45.8 [15.7] years) received all interventions and were analyzed. There was a significant difference in physician rater assessment between saline and hyaluronidase at 4 weeks (visual detection: mean difference = 1.15; 95% CI, 0.46-1.80; P < .001; palpability: mean difference = 1.22; 95% CI, 0.61-1.83; P < .001) and 4 months (visual detection: mean difference = 0.77; 95% CI, 0.33-1.26; P = .001; palpability: mean difference = 0.82; 95% CI, 0.38-1.25; P < .001) that was mirrored by participant self-assessment at 4 weeks (visual detection: mean difference = 0.87; 95% CI, 0.26-1.48; P = .006; palpability: mean difference = 1.59; 95% CI, 1.41-1.77; P < .001) and 4 months (visual detection: mean difference = 1.31; 95% CI, 1.09-1.53; P < .001; palpability: mean difference = 1.52; 95% CI, 1.03-2.01; P < .001), and hyaluronidase was associated with greater resolution of buttons compared with normal saline. The 9.0-unit hyaluronidase injection sites were significantly less palpable than the 1.5-unit sites at both 4 weeks (mean difference = 0.50; 95% CI, 0.01-.99; P = .045) and 4 months (mean difference = 0.47; 95% CI, 0.14-0.81; P = .007). Dose dependence was more notable for Restylane-L. Conclusions and Relevance: Although very small doses of hyaluronidase can remove hyaluronic acid fillers from patient skin, slightly higher doses often result in more rapid resolution. Trial Registration: clinicaltrials.gov Identifier: NCT01722916.

Utility of a High-Resolution Superficial Diagnostic Ultrasound System for Assessing Skin Thickness: A Cross-Sectional Study.

BACKGROUND: Compared with other imaging modalities, ultrasound is relatively deeply penetrating and can be used to evaluate deep dermal and subcutaneous structures. OBJECTIVE: Image skin thickness of the face and neck using high-frequency diagnostic ultrasound devices. MATERIALS AND METHODS: Skin overlying 20 different predesignated face and neck anatomic sites in 32 individuals was imaged using 2 commercially available high-frequency diagnostic ultrasound devices, a dedicated imaging device and a diagnostic device bundled with a therapeutic device. At each site, the subcutaneous and combined epidermal and dermal layer thicknesses were assessed by blinded expert raters. RESULTS: Similar skin thickness measurements were obtained. Notably, subcutaneous fat depth was measured to be 0.2 cm at the forehead; 0.5 cm at the mental eminence; and 0.6 cm at the submental, supraglenoid, and temporal regions. The combined epidermal and dermal thickness was approximately 0.1 cm at the zygomatic process, suborbital area, inferior malar region, gonion, supraglenoid area, and nasolabial-buccal, and nasolabial fold regions. CONCLUSION: This is the first study using high-resolution superficial diagnostic ultrasound to map skin thickness of the face and neck at standard anatomic locations. Ultrasound is an inexpensive, noninvasive, and convenient means to monitor dermatologic conditions and guide their treatment.

Subcutaneous infiltration of carbon dioxide (carboxytherapy) for abdominal fat reduction: A randomized clinical trial.

BACKGROUND: Noninvasive fat removal is preferred because of decreased downtime and lower perceived risk. It is important to seek new noninvasive fat removal treatments that are both safe and efficacious. OBJECTIVE: To assess the extent to which carboxytherapy, which is the insufflation of carbon dioxide gas into subcutaneous fat, results in reduction of fat volume. METHODS: In this randomized, sham-controlled, split-body study, adults (body mass index, 22-29 kg/m2) were randomized to receive 5 weekly infusions of 1000 cm3 of CO2 to 1 side of the abdomen, and 5 sham treatments to the contralateral side. The primary outcome measures were ultrasound measurement of fat layer thickness and total circumference before and after treatment. RESULTS: A total of 16 participants completed the study. Ultrasound measurement indicated less fat volume on the side treated with carboxytherapy 1 week after the last treatment (P = .011), but the lower fat volume was not maintained at 28 weeks. Total circumference decreased nominally but not significantly at week 5 compared with baseline (P = .0697). Participant body weights did not change over the entire course of the study (P = 1.00). LIMITATIONS: Limitations included modest sample size and some sources of error in the measurement of circumference and fat layer. CONCLUSION: Carboxytherapy provides a transient decrease in subcutaneous fat that may not persist. Treatment is well tolerated.

Quantification of noninvasive fat reduction: A systematic review.

BACKGROUND AND OBJECTIVE: Noninvasive fat reduction appears effective, but there are various methods for quantifying changes. The objective of this review is to assess comparative utility measures of subcutaneous fat. STUDY DESIGN/MATERIALS AND METHODS: Articles describing noninvasive fat reduction were searched using MEDLINE, EMBASE, CINAHL and Scopus electronic databases on two dates (January 28, 2014 and February 16, 2016). Titles of studies and abstracts were screened for eligibility. Manual review was performed by two investigators to detect those that: (1) included original data; (2) were randomized controlled trials, or prospective or retrospective cohort studies; (3) quantified fat outcomes; and (4) enrolled at least 10 subjects. RESULTS: Of 1,057 retrieved articles, 36 met criteria. Most reported four or more measurement techniques. Circumference measurements were most commonly cited. Other objective techniques, like caliper thickness, ultrasound, magnetic resonance imaging (MRI), and three-dimensional (3D) photography, were also used. Common subjective methods were evaluation of standardized photographs by blinded raters and patient satisfaction surveys. CONCLUSIONS: For quantifying noninvasive fat reduction, all available methods had significant limitations: photographic comparisons were subjective; circumference or caliper measurements were confounded; ultrasound was operator dependent; MRI was expensive; computed models and simulations were in early development. As new technologies are developed, the need for reliable, accurate and practical measures of subcutaneous fat will increase. Lasers Surg. Med. 50:96-110, 2018. © 2017 Wiley Periodicals, Inc.