Skin cancer in women of color: Epidemiology, pathogenesis and clinical manifestations

Clinicopathologic comparison of basal cell carcinoma among a diverse patient population in Los Angeles County

Introduction

Basal cell carcinoma (BCC) is the most common malignancy in the United States. The majority of cases are identified in Non-Hispanic Whites (NHW) and are far less demonstrated in patients of colour (POC). However, the Hispanic population represents a large and growing proportion of the US population, and skin cancer diagnoses in Hispanics are rising. Thus, the goal of this study is to examine clinicopathologic differences between BCC in Hispanics versus NHW.

Methods

A retrospective chart review of Hispanic and NHW patients with BCC at Los Angeles County + USC Medical Center from January 2018 to March 2020 was performed. In total, 101 BCC samples from the first 100 patients identified of Hispanic ancestry, as well as 50 BCC samples identified from the first 50 patients identifying as NHW, were included for analysis. Patient characteristics (age, sex, medical history, and ethnicity), as well as tumour characteristics (location, subtype, tumour depth, and perineural invasion), were collected. We used between subjects t-tests for continuous variables, and chi-square tests for categorical variables.

Results

In total, 151 specimens were collected amongst 122 subjects (79 Hispanics and 43 NHW patients). Among NHW, the majority of patients (74.4%) were men, but among the Hispanic population, the majority (68.4%) were female (p < 0.001). Prior history of other skin cancer was more common among NHW (67.4%) than Hispanics (31.6%) (p=<0.001). The Hispanic population had a significantly higher proportion of head and neck tumours (p = 0.0004) but a lower proportion of extremity tumours (p = 0.001) compared to NHW. Pigmented BCC was significantly more common among Hispanic patients (p < 0.01). Finally, within the Hispanic group, there was a significant association between sex and histology (p = 0.004), with Hispanic men demonstrating more aggressive mix histology compared to Hispanic women.

Discussion

Our study supports the notion that BCC disparities occur among POC compared to NHW. This includes variations in epidemiologic factors such as sex and past medical history, primary tumour location, and pathologic characteristics. Further research should be conducted to identify additional differences in skin cancer presentation in POC to reduce the gaps in skin cancer knowledge and care.

Perceptions of Sun Protection, Skin Tone, Colorism, and Dermatologic Care Among South Asians in the USA

South Asians (SAs) are among the fastest growing populations in the USA. Colorism - the system of inequality that views lighter skin as more advantageous in society - is prevalent in SA culture. This study evaluates motivations of sun protection use, attitudes of colorism, and skin lightening (SL) practices among SA Americans. Two-hundred-four participants recruited from online forums and ResearchMatch completed a questionnaire. Over half (111/204) reported use of sunscreen, of which 39.6% (44/111) reported daily or frequent use. Nearly half of respondents (98/204) believed that they are not at risk for skin cancer, with 37.7% (77/204) reporting minimal knowledge of skin cancers and only 4.9% (10/204) receiving a total body skin exam. One-third (65/204) reported being more concerned about prevention of tanning than skin cancer. In total, 38.2% (78/204) of respondents reported use of SL products, of which 33.3% (26/78) reported hydroquinone-based products and 26.9% (21/78) were unaware of the ingredients in their SL product. Only 16.7% (13/78) consulted a medical professional before using SL products. While many agreed that SA culture places high importance on light skin with regards to beauty standards (82.3%, 168/204), less noted that lighter skin is more beautiful (37.0%, 74/204). SL users more strongly agreed with colorism attitudes than non-users. Limitations include a small sample size with younger participants. Dermatologists must be mindful of the cultural motivations for skin tone preferences, sun protection habits, and SL behaviors and provide culturally relevant education on sunscreen, skin cancer, and risks of SL for the SA community.

Dermatopathology Trends in African Americans: A Retrospective Analysis of Biopsies

ABSTRACT

In a retrospective analysis of biopsies from January 1, 2019 to December 31, 2020, at University Hospitals Cleveland Medical Center, we aimed to determine the frequency of dermatologic conditions biopsied in African Americans (AA). Given that AAs constitute 13.4% of the US population, understanding the skin disease profile within this significant demographic is crucial. From a total of 1701 biopsies collected from 1442 AA patients, benign neoplasms emerged as the most common diagnosis, accounting for 26.7%, predominantly in females. Notably, cutaneous T-cell lymphoma was the most frequently biopsied malignancy, whereas pigmentary disorders were the least common at 1.4%. The study highlighted the higher occurrence of squamous cell carcinoma compared with basal cell carcinoma in AA, contrasting trends in other racial demographics. Moreover, recognizing the unique presentations of skin disorders in different racial backgrounds is essential, especially because disparities have been reported in skin of color training among dermatology residency programs. Understanding these racial differences in skin diseases can assist clinicians in refining their diagnostic approach. Future research could further explore the potential gaps between clinical expectations and histologic findings, improving diagnostic accuracy.

A Delphi-Style Evaluation of a Skin Assessment Simulation Using Clinical Vignettes and a Breast Health Training Tool

INTRODUCTION

Breast and skin assessment are both required clinical skills across health professional training programs. The breast is an ideal "canvas" for the development of a simulation exercise focused on the identification and diagnosis of skin conditions that could present anywhere on the body alongside unique conditions specific to the breast and nipple-areolar complex. A skin assessment simulation on a breast model has not been described.

METHODS

Investigators developed 20 clinical vignettes for breast and skin conditions (ie, features) depicted on a set of 10 single silicone breast models in 4 skin tones. A modified Delphi approach was used to evaluate the appropriateness of the clinical vignettes and realism of features. A convenience sample of 136 licensed physicians was recruited online. In round 1, participants rated the realism of features and suggested descriptors for each feature. In round 2, participants rated their agreement with descriptors from round 1, selected a diagnosis based on clinical vignettes, and assessed the utility of the Breast Health Training Tool for health professionals.

RESULTS

In round 1, participants (n = 38) agreed (5.1/6) that the features were realistic. In round 2, participants (n = 24) agreed (4.6/6) with the descriptors. Most (>50%) participants agreed on a diagnosis for each feature. Participants (n = 27) agreed (5.3/6) that this tool is useful for health professional education.

CONCLUSIONS

This is the first evaluation of a simulation tool for teaching breast examination and identification of skin conditions on the nipple-areolar complex and breast tissue in multiple skin tones, simultaneously filling the gap in women's breast, lactation, and skin health education.

Exploring Nanocarriers as Treatment Modalities for Skin Cancer

Cancer is a progressive disease of multi-factorial origin that has risen worldwide, probably due to changes in lifestyle, food intake, and environmental changes as some of the reasons. Skin cancer can be classified into melanomas from melanocytes and nonmelanoma skin cancer (NMSC) from the epidermally-derived cell. Together it constitutes about 95% of skin cancer. Basal cell carcinoma (BCC) and cutaneous squamous cell carcinoma (CSCC) are creditworthy of 99% of NMSC due to the limited accessibility of conventional formulations in skin cancer cells of having multiple obstacles in treatment reply to this therapeutic regime. Despite this, it often encounters erratic bioavailability and absorption to the target. Nanoparticles developed through nanotechnology platforms could be the better topical skin cancer therapy option. To improve the topical delivery, the nano-sized delivery system is appropriate as it fuses with the cutaneous layer and fluidized membrane; thus, the deeper penetration of therapeutics could be possible to reach the target spot. This review briefly outlooks the various nanoparticle preparations, i.e., liposomes, niosomes, ethosomes, transferosomes, transethosomes, nanoemulsions, and nanoparticles technologies tested into skin cancer and impede their progress tend to concentrate in the skin layers. Nanocarriers have proved that they can considerably boost medication bioavailability, lowering the frequency of dosage and reducing the toxicity associated with high doses of the medication.

Photoprotection in skin of color

As populations in many parts of the world are projected to become more racially diverse over the coming decades, we must better understand the unique characteristics of the skin of populations with skin of color (SOC). This review aims to highlight important physiologic and clinical considerations of photoprotection in SOC. Ultraviolet radiation and visible light affect dark and light skin differently. SOC populations have historically not been informed on photoprotection to the same degree as their light skinned counterparts. This has exacerbated dermatologic conditions in which SOC populations are disproportionately affected, such as hyperpigmentary disorders. Patients should be encouraged to utilize multiple methods of photoprotection, ranging from avoidance of sunlight during peak intensity hours, seeking shade, wearing sun-protective clothing and wide-brimmed hat, and applying sunscreen. Ideal sunscreens for SOC populations include those with UVA-PF/SPF ratios ≥ 2/3 and tinted sunscreens to protect against VL. Although there have been increased efforts recently, more research into photoprotection for SOC and targeted public education are required to disseminate photoprotection resources that are patient-centered and evidence-based.

Diagnosis and management of basal cell carcinoma: interdisciplinary consensus statements of Jose R. Reyes Memorial Medical Center, a Department of Health Tertiary Hospital in Manila, Philippines

BACKGROUND

Basal cell carcinoma (BCC) is the most common cutaneous malignancy. Multiple risk factors are associated in the development of BCC, with ultraviolet light and genetics playing major roles.

AIMS

The departments of dermatology, medical oncology, ophthalmology, otorhinolaryngology, head and neck surgery, plastic surgery, and radiation oncology of the Jose R. Reyes Memorial Medical Center, Manila, Philippines, have convened and formulated consensus statements on the diagnosis and management of BCC patients seen in the institution.

CONCLUSION

The summary of the recommendations is: (1) Surgery is the treatment of choice for BCC. The range of margins (2-4 mm) depends on the type of BCC. (2) Mohs micrographic surgery (MMS) is indicated for high risk BCC. (3) Topical treatment with imiquimod or 5-flourouracil (5-FU) may be used for superficial BCC. (4) Destructive methods (cryotherapy, curettage and electrodessication, photodynamic therapy) may be used for low risk BCC. (5) Medical and/or radiation therapy is advised for cases where surgery is contraindicated or tumor is not amenable to surgery. Metastasis of this malignancy is rare. Follow-up, which may continue up until 2 years, is recommended for high risk BCC.

Integration of lncRNAs, Protein-Coding Genes and Pathology Images for Detecting Metastatic Melanoma

Melanoma is a lethal skin disease that develops from moles. This study aimed to integrate multimodal data to predict metastatic melanoma, which is highly aggressive and difficult to treat. The proposed EnsembleSKCM method evaluated the prediction performances of long noncoding RNAs (lncRNAs), protein-coding messenger genes (mRNAs) and pathology images (images) for metastatic melanoma. Feature selection was used to screen for metastatic biomarkers in the lncRNA and mRNA datasets. The integrated EnsembleSKCM model was built based on the weighted results of the lncRNA-, mRNA- and image-based models. EnsembleSKCM achieved 0.9444 in the prediction accuracy of metastatic melanoma and outperformed the single-modal prediction models based on the lncRNA, mRNA and image data. The experimental data suggest the importance of integrating the complementary information from the three data modalities. WGCNA was used to analyze the relationship of molecular-level features and image features, and the results show connections between them. Another cohort was used to validate our prediction.