Phenol-Croton Oil Chemical Peeling Induces Durable Improvement of Constitutional Periorbital Dark Circles

BACKGROUND

Constitutional periorbital dark circles (PDC) are common in skin of color and represent a therapeutic challenge.

OBJECTIVE

To summarize the experience of the International Peeling Society on the safety and effectiveness of deep chemical peeling in the treatment of constitutional PDC.

MATERIALS AND METHODS

Multi-institutional, retrospective case series (1990-2020) of constitutional PDC treated by deep chemical peeling. Descriptive analysis by age, sex, Fitzpatrick phototype, phenol-croton formula, degree and durability of improvement, and complications.

RESULTS

Fifty-five phenol-croton oil peels were performed in 52 patients: 3 patients received a second peel for periorbital rhytids 72 to 84 months after the first peel. 92% (48/52) of patients were women; the median age was 46 years (range, 23-68 years). 89% (46/52) of patients were Fitzpatrick III-IV. Most common formula included phenol 60% to 65% and croton oil 0.6% to 0.7%. 89% (49/55) of peels demonstrated >50% clinical improvement. The median duration of improvement was 24 months (range, 1.5-168 months), and 69% (36/52) of patients demonstrated ongoing improvement at the last follow-up. 4% (2/55) of peels exhibited complications of persistent erythema that resolved without scarring.

CONCLUSION

Based on its safety and effectiveness, deep chemical peels are a treatment of choice for constitutional PDC.

Neurotropic Cutaneous Malignancies: Case Report on Keratinocyte Derived Malignancies of the Head and Neck With Perineural Invasion

Background

The recent addition of immunotherapy as a treatment modality to surgery and radiation has vastly improved disease control for patients with keratinocyte-derived carcinomas (KCs) that are incurable with local therapies alone. With the advent of immune checkpoint inhibitors (ICPis) in non-melanoma skin cancers comes diagnostic and therapeutic challenges when considering treatment strategies for patients presenting with clinical perineural invasion (cPNI) of locally advanced KC of the head and neck.

Objectives

We report four cases that convey the diagnostic and therapeutic complexity of managing patients with neuropathic symptoms from cutaneous neurotropic carcinomas of the head and neck. We also discuss an updated review regarding immunotherapies and perineural invasion within KC management.

Conclusion

Patients presenting with symptoms suspicious for cPNI warrant an expanded diagnostic evaluation to correlate neurological findings with neurotropic spread of disease. While nerve biopsies can be precarious in sensitive areas, a history of skin cancer and clinical presentation suggestive of neurotropism may be enough to pursue timely management in the form of surgery, radiation, and/or systemic therapy given each patient’s individual priorities, comorbidities, and prognosis. When adding ICPi as a treatment modality for patients with disease not amenable to local therapies, the potential for immune-related adverse events must be considered. A multi-disciplinary review and approach to the management of patients with KC and cPNI is essential for obtaining optimal patient outcomes.

Development of a Core Outcome Set for Basal Cell Carcinoma (BCC), Including Low-Risk and Advanced Tumors

BACKGROUND

There is variation in the outcomes reported in clinical studies of basal cell carcinoma (BCC). This can prevent effective meta-analyses to answer important clinical questions.

OBJECTIVE

To identify a recommended minimum set of core outcomes for BCC clinical trials.

METHODS

Patient and professional Delphi process to cull a long-list, culminating in a consensus meeting. To be provisionally accepted, outcomes needed to be deemed 'important' (score: 7-9, of maximum of 9) by 70% of each stakeholder group.

RESULTS

235 candidate outcomes identified via a systematic literature review and survey of key stakeholders were reduced to 74 that were rated by 100 health care professionals and patients in two Delphi rounds. 27 outcomes were provisionally accepted. The final core set of 5 agreed-upon outcomes after the consensus meeting was: complete response; persistent or serious adverse events; recurrence-free survival; quality of life; and patient satisfaction, including with cosmetic outcome.

LIMITATIONS

English-speaking patients and professionals rated outcomes extracted from English-language studies.

CONCLUSIONS

A core outcome set (COS) for basal cell carcinoma has been developed. Use of relevant measures may improve the utility of clinical research and the quality of therapeutic guidance available to clinicians.

Chemical Peels as Field Therapy for Actinic Keratoses: A Systematic Review

BACKGROUND

Actinic keratoses (AKs) are a common premalignant cutaneous neoplasm and can progress to squamous cell carcinoma. A variety of treatment options are available for field therapy of diffuse AKs.

OBJECTIVE

This review systematically analyzes the use of chemical peels for treatment of AKs.

MATERIALS AND METHODS

A systematic review of PubMed was performed searching from 1946 to March 2020 to identify the literature on chemical peels for AKs.

RESULTS

Of the 151 articles identified, 5 met inclusion criteria for review. Four of the reviewed articles demonstrated the efficacy of chemical peels in reducing AK count and minimal adverse effects. In some studies, chemical peels exhibited potential to prevent additional AK formation and development of keratinocyte carcinomas.

CONCLUSION

Chemical peels are an efficacious and affordable treatment option for field treatment of AKs. With improved patient tolerance and adherence, chemical peels are an attractive option for field therapy of AKs for both dermatologists and patients.

Consensus-Based Recommendations on the Prevention of Squamous Cell Carcinoma in Solid Organ Transplant Recipients: A Delphi Consensus Statement

IMPORTANCE

There is a paucity of evidence to guide physicians regarding prevention strategies for cutaneous squamous cell carcinoma (CSCC) in solid organ transplant recipients (SOTRs).

OBJECTIVE

To examine the development and results of a Delphi process initiated to identify consensus-based medical management recommendations for prevention of CSCC in SOTRs.

EVIDENCE REVIEW

Dermatologists with more than 5 years' experience treating SOTRs were invited to participate. A novel actinic damage and skin cancer index (AD-SCI), consisting of 6 ordinal stages corresponding to an increasing burden of actinic damage and CSCC, was used to guide survey design. Three sequential web-based surveys were administered from January 1, 2019, to December 31, 2020. Pursuant to Delphi principles, respondents thoroughly reviewed all peer responses between rounds. Supplemental questions were also asked to better understand panelists' rationale for their responses.

FINDINGS

The Delphi panel comprised 48 dermatologists. Respondents represented 13 countries, with 27 (56%) from the US. Twenty-nine respondents (60%) were Mohs surgeons. Consensus was reached with 80% or higher concordance among respondents when presented with a statement, question, or management strategy pertaining to prevention of CSCC in SOTRs. A near-consensus category of 70% to less than 80% concordance was also defined. The AD-SCI stage-based recommendations were established if consensus or near-consensus was achieved. The panel was able to make recommendations for 5 of 6 AD-SCI stages. Key recommendations include the following: cryotherapy for scattered actinic keratosis (AK); field therapy for AK when grouped in 1 anatomical area, unless AKs are thick in which case field therapy and cryotherapy were recommended; combination lesion directed and field therapy with fluorouracil for field cancerized skin; and initiation of acitretin therapy and discussion of immunosuppression reduction or modification for patients who develop multiple skin cancers at a high rate (10 CSCCs per year) or develop high-risk CSCC (defined by a tumor with approximately ≥20% risk of nodal metastasis). No consensus recommendation was achieved for SOTRs with a first low risk CSCC.

CONCLUSIONS AND RELEVANCE

Physicians may consider implementation of panel recommendations for prevention of CSCC in SOTRs while awaiting high-level-of-evidence data. Additional clinical trials are needed in areas where consensus was not reached.

Multiple, Clustered Dermatofibroma: A Rare Clinical Variant of Dermatofibroma

Background:

Although patients with one to two dermatofibromas are common, cases of “multiple” dermatofibromas (more than 15 lesions) are rare and may occur in the context of altered or normal immune function. Patients with multiple dermatofibromas clustered in one anatomic area, by contrast, are strikingly rare.

Objective:

The aim of our study was to present an additional case of multiple, clustered dermatofibroma (MCDF) and to summarize the literature concerning this entity.

Methods:

We performed a MEDLINE (1960–2001) database search using keywords “dermatofibroma” AND “clustered” OR “agminated” OR “grouped.”

Results:

Five case reports were identified using this search strategy. These cases demonstrated substantial similarity in clinical features and behavior, specifically, the presence of pruritic symptoms, no clear inciting incident, an early active growth phase followed by stabilization, predilection for the lower extremity, and no report of sarcomatous transformation.

Conclusion:

Despite an active early growth phase, MCDF appears to follow a benign clinical course, with no report of sarcomatous transformation at up to 20 years followup.

Melanoma Outcomes for Medicare Patients

OBJECTIVE

To determine whether a difference in melanoma outcomes exists in the United States between tumors detected by dermatologists vs those detected by nondermatologists.

DESIGN

Retrospective analysis of linked data from the Medicare enrollment and claims files from the Centers for Medicare and Medicaid Services and the National Cancer Institute's Surveillance, Epidemiology, and End Results program database from 1991 to 1996. The registries are from 12 US sites.

PATIENTS

A study sample comprised of 2020 subjects.

MAIN OUTCOME MEASURES

Tumor characteristics (Breslow thickness and histologic ulceration), stage at diagnosis, and survival and mortality rates.

RESULTS

Tumor detection by a dermatologist vs nondermatologist was associated with an earlier stage melanoma (stage 0, stage I, and stage II vs stage III and stage IV; chi(2) test, P<.01) and a thinner tumor (Breslow thickness, 0.86 mm vs 1.00 mm; P<.05). At all time points (6 months, 2 years, and 5 years), patients whose melanoma was detected by dermatologists had better survival rates (98%, 87%, and 74%, respectively, for those whose melanoma was detected by dermatologists vs 95%, 79%, and 69%, respectively, for nondermatologists; P<.05). Non-cancer-related mortality was similar for the 2 groups, but the patients whose tumors were detected by dermatologists had lower cancer-related mortality (13% vs 21%; P<.01) and overall mortality (29% vs 37%; P<.01). Multivariate analysis showed that age, sex, stage at diagnosis, and melanoma detection by a dermatologist were all significantly predictive of survival.

CONCLUSIONS

Earlier stage melanoma and improved survival are associated with detection by a dermatologist rather than by a nondermatologist. Increasing access to dermatologists, particularly for older patients, may represent one approach to improving melanoma-related health outcomes.

A catalog of dermatology utilities: a measure of the burden of skin diseases

Utilities are measures of quality of life that reflect the strength of individuals' preferences or values for a particular health outcome. As such, utilities represent a measure of disease burden. The aim of this article is to introduce the concept of utilities to the dermatology community and to present a catalog of dermatology utilities obtained from direct patient interviews. Our data are based on 236 total subjects from Grady Hospital (Atlanta, GA), Stanford Medical Center (Palo Alto, CA), and Parkland Hospital (Dallas, TX). The mean time trade-off utilities ranged from 0.640 for blistering disorders to 1.000 for alopecia, cosmetic, and urticaria. The mean utility across all diagnoses was 0.943. We present utilities for 17 diagnostic categories and discuss the underlying reasons for the significant disease burden that these utilities represent. We also present these dermatology categories relative to noncutaneous diseases to place the cutaneous utilities in perspective and to compare the burden of disease. We have demonstrated that skin diseases have considerable burden of disease and provided a preliminary repository of utility data for future researchers and policy makers.

Multiple, Clustered Dermatofibroma: A Rare Clinical Variant of Dermatofibroma

BACKGROUND

Although patients with one to two dermatofibromas are common, cases of "multiple" dermatofibromas (more than 15 lesions) are rare and may occur in the context of altered or normal immune function. Patients with multiple dermatofibromas clustered in one anatomic area, by contrast, are strikingly rare.

OBJECTIVE

The aim of our study was to present an additional case of multiple, clustered dermatofibroma (MCDF) and to summarize the literature concerning this entity.

METHODS

We performed a MEDLINE (1960-2001) database search using keywords "dermatofibroma" AND "clustered" OR "agminated" OR "grouped."

RESULTS

Five case reports were identified using this search strategy. These cases demonstrated substantial similarity in clinical features and behavior, specifically, the presence of pruritic symptoms, no clear inciting incident, an early active growth phase followed by stabilization, predilection for the lower extremity, and no report of sarcomatous transformation.

CONCLUSION

Despite an active early growth phase, MCDF appears to follow a benign clinical course, with no report of sarcomatous transformation at up to 20 years followup.

Tacrolimus 0.1% ointment for seborrhoeic dermatitis: an open-label pilot study

BACKGROUND

As a topical immunosuppressant, tacrolimus ointment may be beneficial in the treatment of seborrhoeic dermatitis, while avoiding adverse effects related to long-term use of topical corticosteroids.

OBJECTIVES

To determine the safety and efficacy of topical tacrolimus 0.1% ointment in the treatment of seborrhoeic dermatitis.

METHODS

Sixteen subjects (15 men and one woman) were enrolled in a 6-week, open-label, uncontrolled trial of daily topical tacrolimus 0.1% ointment. Following a 2-week washout period for subjects using conventional therapy for seborrhoeic dermatitis, study medication was applied nightly to affected areas until clinical clearance occurred, and then for 7 days thereafter. Lesional extent and severity were assessed at baseline (day 0), at week 2 and at week 6 using the following parameters: (i). clinical assessment of erythema and scaling using a 0-3 scale; (ii). investigator global assessment; (iii). subject global assessment using a 0-6 scale; and (iv). serial photography.

RESULTS

Thirteen of 16 (81%) subjects completed the study protocol; three subjects were lost to follow-up at week 6. Relative to the mean baseline value, the mean lesional erythema scores improved by 66.1% and 70.9% at weeks 2 and 6, respectively. Compared with baseline, the mean scaling scores improved by 63.7% at week 2 and 87.8% at week 6. These observations were statistically significant (P < 0.05, Wilcoxon two-sample test). Mean investigator global assessment scores improved by 76.6% at week 2 and 82.7% at week 6, relative to the mean baseline value. Mean subject global assessment scores also improved, by 69.4% at week 2 and 83.5% at week 6, relative to the mean baseline value. Other than transient application site pruritus/burning in two subjects, no serious adverse events were observed.

CONCLUSIONS

This pilot study suggests that topical tacrolimus 0.1% ointment is efficacious in the short-term treatment of seborrhoeic dermatitis. Further controlled trials are warranted, to determine its efficacy and safety for this common condition.

Acral lentiginous melanoma mimicking benign disease: the Emory experience

BACKGROUND

Plantar and subungual melanoma exhibits a higher misdiagnosis rate relative to other anatomic sites. Misdiagnosis and delay in diagnosis are statistically associated with poorer patient outcome. Awareness of atypical presentations of acral melanoma may, thus, be important to decrease misdiagnosis rates and improve patient outcome.

METHODS

We conducted a retrospective case review of plantar or lower-extremity subungual melanoma performed at Winship Cancer Center, a tertiary care, referral center affiliated with Emory University, between 1985 and 2001.

RESULTS

A total of 53 cases of plantar or lower-extremity subungual melanoma were identified. Of 53 cases with a final diagnosis of melanoma, 18 were initially misdiagnosed. Misdiagnoses included wart, callous, fungal disorder, foreign body, crusty lesion, sweat gland condition, blister, nonhealing wound, mole, keratoacanthoma, subungual hematoma, onychomycosis, ingrown toenail, and defective/infected toenail. Of the 18 misdiagnosed cases, 9 were clinically amelanotic.

CONCLUSION

Awareness that amelanotic variants of acral melanoma may assume the morphology of benign hyperkeratotic dermatoses may increase the rate of correct diagnosis and improve patient outcome.

Advances in the management of psoriasis: monoclonal antibody therapies

Psoriasis is a common skin disorder characterized by erythematous, scaling plaques. Until recently, therapies for this disease have been aimed at reducing keratinocyte proliferation. We have learned that psoriasis is not primarily a disorder of keratinocyte hyperproliferation, but is an inflammatory disease. This knowledge, especially our current understanding of the role of activated T cells in psoriasis, has led to new therapeutic options and new areas of research. Immunosuppressive agents such as cyclosporine have proven very useful in the treatment of psoriasis, but their use is limited by toxicity. Monoclonal antibodies directed against key components of the inflammatory process have been studied in an attempt to produce safer, more selective immunosuppressive agents. This review summarizes much of the available literature describing the use of monoclonal antibodies in the treatment of psoriasis.

Recurrent erythema nodosum associated with Echinacea herbal therapy

We report a case of recurrent erythema nodosum that is temporally and perhaps causally associated with use of echinacea herbal therapy. The genus Echinacea is traditionally used as an immunostimulant in the prophylaxis and treatment of upper respiratory tract infections. In vitro and in vivo studies of echinacea administration in animal and human-derived models suggest a definite stimulatory effect on the cellular immune system, although the clinical impact of echinacea is still unknown. The public's increasing use of alternative and complementary therapies necessitates that dermatologists be familiar with the cutaneous adverse effects of these agents.