Publications by authors named "Bassel Mahmoud"

Article Synopsis
  • - The study developed a new device for preparing autologous skin cell suspension (ASCS) containing melanocytes to treat stable vitiligo, which is often difficult to repigment using conventional methods.
  • - In a trial involving 25 subjects, the ASCS treatment showed significant effectiveness, with 36% of lesions achieving at least 80% repigmentation after 24 weeks, compared to none in the control group.
  • - The results suggest that ASCS could be a promising treatment for stable vitiligo, potentially enhancing patients' quality of life, although the small sample size limits deeper analysis.
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How patient and tumor factors influence clearance margins and the number of Mohs Micrographic Surgery (MMS) stages when treating basal cell carcinoma (BCC) remains widely uncharacterized. It is important to elucidate these relationships, as surgical outcomes may be compared nationally between colleagues. Our objective is to evaluate the relationships between defect size and patient demographics, as well as between BCC subtypes and the number of MMS stages.

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Background: Patients undergoing Mohs micrographic surgery (MMS) are given detailed wound care instructions to prevent postoperative complications. Previous studies have revealed low treatment adherence in general dermatology, but adherence to postoperative wound care and its potential association with poor surgical outcomes remain largely unstudied.

Objective: To determine the frequency and causes of wound care nonadherence in patients who underwent MMS.

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Article Synopsis
  • * A study analyzed the immunological profiles of stable vitiligo patients undergoing MKTP, focusing on T-cell subsets and melanocyte quantification, to understand factors affecting post-surgery outcomes.
  • * Results showed that higher CD8+ T-cell levels in vitiligo lesions were linked to poorer repigmentation outcomes after MKTP, suggesting that this T-cell count could help identify better candidates for the procedure.
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Background: There is no standardized definition of surgical site infections (SSI) after Mohs micrographic surgery (MMS) used in the clinical or research settings, which may contribute to heterogeneity in the differences in infection rates reported.

Objective: To use an electronic survey of Mohs surgeons across the country to better understand how Mohs surgeons define SSI after MMS.

Methods: A web-based survey was developed and distributed to Mohs surgeons.

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Morphea is characterized by initial inflammation followed by fibrosis of the skin and soft tissue. Despite its substantial morbidity, the pathogenesis of morphea is poorly studied. Previous work showed that CXCR3 ligands CXCL9 and CXCL10 are highly upregulated in the sera and lesional skin of patients with morphea.

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Background: Accurate removal of basal cell carcinoma (BCC) is challenging due to the subtle contrast between cancerous and normal skin. A method aiding with preoperative delineation of BCC margins would be valuable. The aim of this study was to implement and clinically validate a novel handheld optical polarization imaging (OPI) device for rapid, noninvasive, in vivo assessment of skin cancer margins.

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Background: Recent studies demonstrate comparable outcomes of Mohs micrographic surgery (MMS) versus local excision (LE) for melanoma in situ. These studies are limited by their focus on the head and neck.

Objective: The primary objective was to compare 5-year overall and melanoma-specific mortality among patients with melanoma in situ of the trunk or extremities who undergo MMS versus LE.

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Background: Cutaneous squamous cell carcinoma (cSCC) is the second most common cancer in the United States. Cutaneous squamous cell carcinoma has an estimated incidence of more than 700,000 new cases per year and a 5% risk of metastasis.

Objective: To provide clinicians with guidelines for the management of cSCC based on evidence from a comprehensive literature review and consensus among the authors.

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Background: Botulinum toxin Type A (BoNT A) for the treatment of facial wrinkles is delivered through local injection. We previously demonstrated that topical surface application of BoNT A has negligible cutaneous bioavailability and is not effective in treating wrinkles.

Objective: To determine the effect of BoNT A solution applied topically on the skin surface immediately after ablative fractional CO2 laser treatment.

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Background: Many variations in the surgical treatment of upper eyelid blepharoplasty have been described, including orbicularis oculi muscle stripping. There is no evidence in the literature to support the efficacy of this technique in improving the aesthetic results of the procedure.

Objectives: To conduct a single-blind, randomized, controlled, split-face pilot study to evaluate the effects of orbicularis oculi muscle stripping on upper lid blepharoplasty.

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Background: The term "flagellate erythema" after bleomycin therapy was described as bleomycin-induced linear hyperpigmentation. Since then, this pattern has not been related to any other chemotherapeutic regimen.

Observation: We report a rare patient with chronic lymphocytic leukemia who developed "flagellate dermatitis" induced by bendamustine.

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Tristimulus colorimetry and diffuse reflectance spectroscopy (DRS) are white-light skin reflectance techniques used to measure the intensity of skin pigmentation. The tristimulus colorimeter is an instrument that measures a perceived color and the DRS instrument measures biological chromophores of the skin, including oxy- and deoxyhemoglobin, melanin and scattering. Data gathered from these tools can be used to understand morphological changes induced in skin chromophores due to conditions of the skin or their treatments.

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Although it is widely believed that non-segmental vitiligo (NSV) results from the autoimmune destruction of melanocytes, a clear understanding of defects in immune tolerance, which mediate this uncontrolled self-reactivity, is still lacking. In the present study, we systemically evaluated circulating regulatory T (Treg) cells, including CD4(+) CD25(+) FoxP3(+) Treg cells and invariant natural killer T (iNKT) cells, as well as naïve and memory CD4(+) and CD8(+) T cells and their cytokine production, in a cohort of 43 progressive NSV patients with race-, gender-, and age-matched healthy controls. We found that the general immunophenotypes of CD4(+) and CD8(+) T cells and the percentage of CD4(+) CD25(+) FoxP3(+) Tregs were comparable between NSV and healthy controls.

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Background: Subcuticular incision is performed to release fibrotic bands beneath acne scars and to stimulate neocollagenesis. Naturally sourced porcine collagen has been approved for filling moderate to deep facial wrinkles and nasolabial folds. To our knowledge, naturally sourced porcine collagen filler has not yet been tried as a treatment for correcting atrophic acne scars.

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Background: Although upper eyelid blepharoplasty is a common procedure, subtleties in surgical technique can affect cosmetic outcomes. Suture materials commonly used include polypropylene, monofilament nylon, fast-absorbing gut, and ethylcyanoacrylate (ECA) tissue adhesive.

Objective: To assess upper lid blepharoplasty scars in participants whose incision had been closed with 6-0 polypropylene sutures, 6-0 fast-absorbing gut sutures, or ECA.

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Objective: To assess clinical and histopathologic changes occurring after long-pulsed 1064-nm Nd:YAG laser treatment of hidradenitis suppurativa (HS).

Design: Prospective, controlled clinical and histologic study of patients with Hurley stage II HS disease.

Setting: Outpatient dermatology department at Henry Ford Hospital, Detroit, Michigan.

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The purpose of this study was to determine the effect of visible light on the immediate pigmentation and delayed tanning of melanocompetent skin; the results were compared with those induced by long-wavelength UVA (UVA1). Two electromagnetic radiation sources were used to irradiate the lower back of 20 volunteers with skin types IV-VI: UVA1 (340-400 nm) and visible light (400-700 nm). Pigmentation was assessed by visual examination, digital photography with a cross-polarized filter, and diffused reflectance spectroscopy at 7 time points over a 2-week period.

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Background: Ablative resurfacing lasers are effective for treatment of acne scars, but they have a high risk of complications. Fractional lasers have less severe side effects but more moderate efficacy than ablative devices. Studies were performed in individuals with Fitzpatrick skin type I to VI.

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Background: Hidradenitis suppurativa (HS) is a chronic inflammatory disease involving the intertriginous areas.

Objective: We sought to conduct clinical and histopathologic evaluation of the efficacy of long-pulsed neodymium:yttrium-aluminium-garnet laser treatment for HS.

Methods: We conducted a prospective, randomized, right-left within-patient controlled trial for HS (n = 22).

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