Line-field confocal optical coherence tomography of eyelid margin growths: A case series.

BACKGROUND: The clinical differential diagnosis of lesions arising on the eyelid margin may be challenging and an unneeded surgical approach may have serious functional and aesthetic consequences. Nonetheless, early recognition and treatment of malignant tumors of the eyelid margin is mandatory. Line-field confocal optical coherence tomography (LC-OCT) is a novel tool for the in vivo, real-time skin imaging. OBJECTIVES: The aim of the study was to identify and analyze the LC-OCT features of a series of eyelid margin growths and to correlate these features with the histopathological findings. METHODS: Patients with eyelid margin growths who were scheduled for lesion excision underwent LC-OCT examination. Inclusion criteria were a challenging clinical aspect of the lesions and a clinical history of recent onset (up to 12 months). In all cases, the histopathological examination of the excised lesions was performed for the final diagnosis. RESULTS: A total of 31 lesions located on the upper (13 cases) or lower (18 cases) eyelid margin from 28 consecutive patients (male = 15, female = 13; mean age: 64.7 years, range: 44-87 years) were evaluated and excised. The histopathologic diagnoses were nodular basal cell carcinoma (BCC) (nine cases), squamous cell carcinoma (SCC) (three cases), compound nevus (four cases), dermal nevus (two cases), seborrheic keratosis (four cases), pyogenic granuloma (one case), trichilemmal cyst (three cases), and hidrocystoma (five cases). LC-OCT allowed the in vivo recognition of the main microscopic features of the examined lesions. CONCLUSIONS: LC-OCT represents a promising tool for the evaluation of eyelid margin lesions. Advantages of non-invasive diagnosis particularly relevant in such a sensitive region include a more correct planning of the treatment and, in case of surgery, the most appropriate surgical approach and, importantly, a correct timing of intervention.

Line-field confocal optical coherence tomography of lentigo maligna with horizontal and vertical histopathologic correlations.

Lentigo maligna (LM) is a subtype of in situ melanoma that classically presents in elderly patients as a slowly growing lesion on sun-exposed areas that may evolve to invasive melanoma. Line-field confocal optical coherence tomography (LC-OCT) is a new non-invasive technique for a real-time, vertical, and horizontal skin imaging with high resolution close to conventional histopathology. We present the LC-OCT features of an LM of the nose in a 49-year-old white man along with their horizontal and vertical histopathological correlations. LC-OCT was able to detect in vivo, in both horizontal and vertical imaging, the main microscopic features typical of LM by showing, in the epidermis and around the hair follicles, the presence of large, bright roundish, or dendritic atypical cells, with evident nuclei, corresponding to atypical melanocytes with a tendency toward folliculotropism. A strong correspondence between LC-OCT images and vertical and horizontal histopathological sections was observed. Our study, although limited to a single case, is indicative of the great potential of LC-OCT to improve the non-invasive diagnosis of LM.

New Developing Treatments for Molluscum Contagiosum.

A large variety of treatments for molluscum contagiosum (MC) are available, but none are Food and Drug Administration (FDA) approved and there is no consensus on the optimal approach, mainly owing to a lack of high-level data. Physical modalities are widely used, but require repeated outpatient visits for administration, are painful and difficult to perform in children, and are associated with the possibility of residual scarring and post-inflammatory hypo- or hyperpigmentation. Two experimental topical drugs, a new standardized preparation of topical cantharidin, called VP-102, and a topical nitric oxide (NO)-releasing product containing berdazimer, called SB206, represent promising products that have been designed to overcome the limitations of current treatments. They have recently shown good results in terms of safety and efficacy in large cohorts of patients in phase III studies and have the potential to be the first FDA-approved therapies for the treatment of MC.

Home treatment of single cutaneous warts combining face-to-face and teledermatology consultation: A new perspective.

During the COVID-19 pandemic, teledermatology services were set up and enhanced to take care of those benign conditions like cutaneous warts (CWs) which, if undiagnosed or treated with delay, could have worsened, enlarged, and potentially spread to the community. The aim of this hybrid exploratory trial was to combine face-to-face clinical and dermoscopic evaluation with teledermatology follow-up in the management of CWs with a cryogenic pen based on nitrous oxide for home treatment. Twelve adult patients affected by CWs were enrolled. During the first face-to-face visit, single CWs were selected for the study by clinical and dermoscopic evaluation. The home schedule consisted of one application to be repeated after 2 weeks, when signs of CWs were still evident. Patients were also asked to send a clinical photo of the treated lesion at weekly intervals. A final face-to-face evaluation was scheduled to verify the response to home treatment by clinical and dermoscopy evaluation. A total of 20 CWs located on the trunk and the extremities were treated: a complete clinical and dermoscopic resolution was observed in 16 out of 20 lesions (80%), and a partial response in two cases. The adverse events observed during treatment were comparable to those normally observed with cryotherapy of CWs. In conclusion, home treatment of CWs with the cryogenic pen, that should be always preceded by dermatologist diagnosis and prescription, is safe and effective, especially if combined with face-to-face and teledermatology consultations, pointing out its important role during pandemic times or in any other environmental limitations that may impair the access to medical care services. The combination of face-to-face consultations for initial and final visits and teledermatology during the treatment phase could represent a model for other dermatologic conditions as well (e.g., acne, rosacea, psoriasis, atopic eczema etc.).

The Immunohistochemical Expression of the Serine and Arginine-Rich Splicing Factor 1 (SRSF1) Is a Predictive Factor of the Recurrence of Basal Cell Carcinoma: A Preliminary Study on a Series of 52 Cases.

Background and Objectives: Basal cell carcinomas (BCCs) are the most frequent skin tumors; although they usually exhibit a good prognosis, it has been reported that there is a 2-8% rate of local recurrence of surgically-excised BCCs, even in the presence of tumor-free surgical margins. Several histological and clinical risk factors have been associated with a higher risk of local relapse; however, the exact pathogenetic mechanisms that regulate the local recurrence of these tumors are still to be elucidated. The serine and arginine-rich splicing factor 1 (SRSF1) is an RNA-binding protein whose oncogenic function has been described in numerous forms of human cancers, including brain, lung, and prostate tumors. We evaluated the correlation between SRSF1 immunoexpression and the local recurrence of BCCs. Materials and Methods: Fifty-two cases of surgically excised BCCs with free-tumor margins (10 high-risk and 42 low-risk variants), for which follow-up data were available, were selected. Local recurrence occurred in only 5 cases. Results: We found high and low immunoexpressions of SRSF1 in 18 and 34 cases, respectively. A statistically significant association between high SRSF1 immunoexpression and the local recurrence of BCC was found (p = 0.0433). Conclusions: Our immunohistochemical results suggest an active role of SRSF1 in inducing a local recurrence of BCCs; however, further studies on a larger series are needed to validate our findings.

Line-Field Confocal Optical Coherence Tomography May Enhance Monitoring of Superficial Basal Cell Carcinoma Treated with Imiquimod 5% Cream: A Pilot Study.

Line-field confocal optical coherence tomography (LC-OCT) is a novel, non-invasive technique for real-time skin imaging. Imiquimod (IQ) 5% cream is an immune response modifier currently approved for the treatment of small, superficial basal cell carcinoma (BCC). The aim of this study was to investigate if LC-OCT may be useful to enhance the treatment monitoring of BCC. Twenty superficial BCCs from 12 patients were treated with IQ 5% cream once daily, five days a week, for six weeks. Clinical and LC-OCT evaluations were performed at baseline and 4 weeks after the end of treatment. At the end of the study, 13 lesions showed a complete clinical and LC-OCT response, 4 lesions a partial clinical and LC-OCT response, and 3 lesions a complete clinical response but residual tumoral signs at LC-OCT. Our pilot study suggests that LC-OCT may represent a promising tool able to enhance the evaluation of the treatment response of BCCs to non-invasive treatments. In our case series, its use highlighted, through a detailed, fast, and complete examination of the treated area, three cases of residual BCC that otherwise would have gone undetected at clinical examination. Future studies on larger series of patients treated with different modalities and with a longer follow-up are advisable.

Bowen's disease of the penile shaft presenting as a pigmented macule: dermoscopy, reflectance confocal microscopy and histopathological correlation,

Abstract The penile localization of pigmented Bowen's disease has been rarely reported and has been mostly related to human papillomavirus infection. Early diagnosis and treatment are important to prevent progression to invasive squamous cell carcinoma. However, diagnosis can be challenging because it may be difficult to distinguish from melanoma, even using dermoscopy. Reflectance confocal microscopy may be useful in suggesting the bedside diagnosis before the histopathological confirmation. A case of penile pigmented Bowen's disease is described along with its dermoscopy and reflectance confocal microscopy findings and their correlation with histopathology.

Bowen's disease of the penile shaft presenting as a pigmented macule: dermoscopy, reflectance confocal microscopy and histopathological correlation.

The penile localization of pigmented Bowen's disease has been rarely reported and has been mostly related to human papillomavirus infection. Early diagnosis and treatment are important to prevent progression to invasive squamous cell carcinoma. However, diagnosis can be challenging because it may be difficult to distinguish from melanoma, even using dermoscopy. Reflectance confocal microscopy may be useful in suggesting the bedside diagnosis before the histopathological confirmation. A case of penile pigmented Bowen's disease is described along with its dermoscopy and reflectance confocal microscopy findings and their correlation with histopathology.

Line-field confocal optical coherence tomography of xanthogranuloma: Correlation with vertical and horizontal histopathology.

Line-field confocal optical coherence tomography (LC-OCT) is a new noninvasive technique for a real-time, vertical, and horizontal imaging of the skin at cellular resolution. A 47-year-old female presented with a 6-month history of an asymptomatic yellowish papule. LC-OCT evaluation was able to show the diagnostic microscopic features of xanthogranuloma and showed an excellent correlation with vertical and horizontal histopathological sections by revealing enlarged dermal papillae containing multiple, bright roundish giant cells, corresponding to foamy histiocytes, and giant cells characterized by a dark center surrounded by a highly hyper-refractile peripheral ring, corresponding to Touton cells. LC-OCT may represent a valid, noninvasive alternative to histopathological examination in clinically atypical cases of xanthogranuloma.

A novel treatment of intertrigo in athletes and overweight subjects.

BACKGROUND: Intertrigo is a recurrent inflammatory dermatosis involving large/small body folds. Skin barrier products represent the mainstay of treatment in uncomplicated mild/moderate intertrigo. AIMS: To assess by clinical and instrumental evaluation the efficacy and tolerability of a new barrier spray containing zinc gluconate-taurine complex and zinc oxide combined with panthenol, glycerin, and Shea (Butyrospermum parkii) butter in mild-to-moderate intertrigo in athletes and overweight subjects. METHODS: In this open-label prospective trial, 20 adult patients, with mild/moderate intertrigo enrolled at the Dermatology University Clinic of Catania (Italy), were instructed to apply the spray twice daily for 30 days. Degree of erythema was performed clinically and by polarized dermoscopy using a 5-point severity scale (from 0=no erythema to 4=severe erythema) at baseline, and at 15 and 30 days. The measurement of pruritus was carried out by a subject-completed visual analog scale (VAS) (from 0 mm=no pruritus to 100 mm=severe pruritus), at all time points. An Investigator Global Assessment (IGA) using a 6-point scale (from -1=worsening to 4=complete response/clear) was also conducted at 30 days, along with a self-administered tolerability questionnaire. Statistical analysis was performed using SAS version 9. RESULTS: At 15 days, a statically significant reduction from baseline in erythema severity (mean from 3.4 ± 0.3 to 2.5 ± 0.2) along with pruritus intensity (mean from 70 ± 15.4 mm to 40 ± 9.5 mm) was observed. At 30 days, all evaluated parameters showed a further progressive statistically significant reduction from baseline. No relevant side effects were recorded. CONCLUSIONS: Our results suggest that the tested spay containing antiseptic/anti-inflammatory and anti-irritation agents may represent a valid therapeutic option for mild/moderate intertrigo.