Introdução:There is no standardized approach to immediate post-procedure care for epidermal ablation; the conscientious choice of products can provide greater comfort to the patient, reduced risks and complications, and shorter recovery times. Objective: To analyze the safety and effectiveness of silicone spray in tissular restoration after two epidermal ablation procedures – fractional ablative 2,790 nm YSGG laser and dermabrasion. Methods: Patients with photoaging or acne scars (n = 20) applied silicone spray on one side of the face and liquid Vaseline (control) on the other side of the face after the procedures.Transepidermal loss of water was measured in all patients. Results: Erythema and burning sensation were the most common findings, and were significantly more frequent in the areas where Vaseline was applied. Conclusions: Silicone spray is safe and effective for use after epidermal ablative procedures, and is significantly superior to Vaseline in controlling burning sensations and erythema

Keywords: SILICONES, WOUND HEALING, DERMABRASION, LASER THERAPY

Flaps are widely used in the surgical reconstruction of the nasal region. During the post-operative period, an unattractive depressed scar in relation to the nearby skin can be observed. Even after abrasion – which the literature recommends 30-60 days after the procedure – this complaint often persists. This study proposes tangential excisions with a razor blade (shaving) of the flap''''''''s entire area until it is level with the surrounding region, followed by dermabrasion to refine any remaining irregularities. The results are deemed excellent since the scars become less noticeable – a very satisfactory outcome due to the aesthetic and social importance of the treated area.

Keywords: SURGICAL FLAPS, NEOPLASMS, DERMABRASION

The dorsum of the hand is home to tumors that often require a surgical approach. Due to limited cutaneous mobility, wide surgical wounds become a challenge to dermatologic surgeons. The authors report the case of a patient with a tumor in the dorsal region of the left hand that, after removal with a safety margin, resulted in a wide surgical wound, and in the choice of reconstruction with an A-T flap. Six months later, the patient was cured, with total preservation of the hand's mobility and excellent aesthetic results. The concept of using flaps for closing wide surgical wounds, whenever possible, is reinforced.

Keywords: HAND, NEOPLASMS, SURGICAL FLAPS.

Onychomatricomas are rare benign tumors originating from the nail matrix and underlying stroma. They are usually asymptomatic and slow growing, affecting both middle-aged men and women, and more frequently involve the digits of the hands. Key clinical features for diagnosis are: yellowish longitudinal band of variable width, splinter hemorrhages, longitudinal grooves associated with the transverse overcurvature and fingerlike projections emerging from the nail matrix. The authors report three cases of this tumor affecting toes, emphasizing main clinical aspects, dermoscopic findings, and surgical treatment.

Keywords: NAILS; NAILS, MALFORMED; NEOPLASMS.

Dermatologists have recently been incorporating diagnostic imaging techniques in the investigation of cutaneous lesions. The development of ultrasound devices with a frequency greater than 15MHz has led to the creation of the high-frequency ultrasound (HFUS), which enables the identification of the skin's different layers and structures as well as appendages. This has expanded its use considerably in various dermatological conditions, particularly in cutaneous neoplasms. Its association with color Doppler allows the study of tumor microcirculation. In the present paper, the authors discuss the main clinical characteristics of malignant cutaneous neoplasms and how high-frequency ultrasound allows a better pre-operative evaluation of those lesions.

Keywords: ULTRASONOGRAPHY; SKIN NEOPLASMS; DIAGNOSIS.

Introduction: Cutaneous melanoma has significant relevance among malignant skin tumors, for despite its low incidence (3-4%) it is associated with the highest mortality. In Brazil, estimates for the year 2014 correspond to 10% of all cancers, establishing this as an important public health issue. Objectives: To present epidemiological data related to melanoma skin cancer in the midlands of the Brazilian State of São Paulo. Methods: Descriptive retrospective cross-sectional analysis of data from a tertiary hospital's medical records. The analysis was subject to measurement and information bias. A descriptive analysis with frequency and percentage was carried out. Results: There was a prevalence of cutaneous melanoma in women (71%), patients between 50 and 70 years of age (56%), Caucasians (78%), and individuals who identified their lesions through self-examination (42%), with predominant involvement of the trunk (35%). The most prevalent histological subtype was the superficial spreading (58%). Conclusions: Understanding the epidemiology of cutaneous melanoma in a given geographic region enables and facilitates medical actions, allowing for the better establishment of strategies for primary and secondary prevention.

Keywords: MELANOMA, EPIDEMIOLOGY, SKIN NEOPLASMS.

Since ancient times, humans have had an interest in improving their body contour. Liquid silicone has been used for this purpose, in order to improve deformities. The authors present a case of a female patient with paralysis in the right lower limb, who underwent improper injections of a large volume of injectable silicone in the affected limb aimed at correcting its contour. Ten years later, the patient developed local complications linked to the silicone injections - localized scleroderma lesions and superficial lipomatous nevus with progressive growth in the affected limb - and clinical and laboratory pictures of rheumatoid arthritis. Injectable liquid silicone should be contraindicated as a substance for implants.

Keywords: POSTOPERATIVE COMPLICATIONS; SILICONES; SKIN NEOPLASMS

Eccrine spiradenoma is a rare benign adnexal epithelial neoplasm characterized by a bluish-pink, slow-growing solitary nodule, coursing with paroxysmal pain, mainly in young adults. It is most commonly located in the trunk and extremities. Bleeding and/or ulceration are common in the giant vascular variant, which is characterized by a size greater than 2 cm in diameter and a high degree of vascularization seen on histology. Its clinical characteristics are unspecific and require biopsy with histological analysis for diagnosis. Its histology presents one or more basophilic intradermal lobules enveloped in a fibrous capsule without connection to the epidermis. It presents two types of cells: small cells with dark nuclei in the periphery and large cells with light nuclei in the center. An accurate diagnosis is important due to the fact that it can develop into a potentially fatal malignancy - which is a rare phenomenon and occurs most often in the multiple variant. A rare case of eccrine spiradenoma in the abdomen with bleeding associated is described in the present paper, as well as a discussion on possible treatments.

Keywords: ECCRINE SPIROADENOMA, BENIGN EPITHELIAL NEOPLASIA, SEBACEOUS GLANDS

Factitious panniculitis can be triggered by subcutaneous injections of substances linked to esthetic procedures. A case diagnosed and treated as chronic erythema nodosum manifested nodule five years later, with the anatomopathological study suggesting atypical lipomatous tumor. After resection of the lesion, histology showed steatonecrosis, compatible with lobular panniculitis. Magnetic resonance imaging examination revealed the presence of a liquid substance in the gluteal region, favoring the diagnostic suspicion of factitious panniculitis. The patient admitted to having undergone silicone injection in this region in the past, with additional findings arising from the histological review confirming this hypothesis. The late complication linked to injections of cutaneous filling material motivated the present study.

Keywords: Erythema chronicum migrans; Panniculitis; Silicones

Scar formation is the natural healing response of the skin to reestablish dermal integrity after an injury. Besides being unsightly, the scars can also be hypertrophic or keloids, which makes treatment challenging and many times unsatisfactory. Ethnicity and site of the lesion have an important role in the formation of scar types, but it is not always possible to predict the final result. The use of topical silicone has been an option for scar management and the target of many publications over the years. It is believed that its early use can prevent the development of abnormal scars and treat existing scars.

Keywords: Scars, prevention & control; Silicone gels; Treatment

Introduction: Silicone dressings and Triamcinolone injections are known to improve keloids and hypertrophic scars size, erythema, flexibility, and symptoms such as pain and itching. These treatments are non-invasive, inexpensive, and widely used as first or second-line therapy; however, studies comparing them are still lacking.
Objective: To compare silicone dressings, triamcinolone injections, and a combination group, to treat hypertrophic scars, at the same anatomical area, caused by the same mechanism of injury.
Materials and methods: In a prospective study, 12 patients with median-sternotomy scars were randomized into 3 groups (n=4 patients each): group 1, monthly triamcinolone injections; group 2, a combination of silicone dressings and triamcinolone injections; and group 3, silicone dressings. Patients were evaluated in monthly clinical appointments using the Vancouver Scale and the durometer. Immunohistochemistry and confocal microscopy for collagen types I and VI were performed in scar samples. The groups were compared using Kruskal-Wallis and Friedman tests, with p<0,05 indicating significance.
Results: The three treatments were effective in reducing the Vancouver scores. A difference between the three groups was observed at time 2 when triamcinolone was less effective. Group 2 showed an improvement on pigmentation (p = 0,042). Collagens types I and VI presented increased fluorescence throughout the superficial and deep dermis in untreated lesions, which decreased after the treatment. Although the number of patients is limited, this is the first prospective study addressing some of the major bias in scars treatment.

Keywords: Scar; Keloid; Silicone gel; Triamcinolone

O queratoacantoma (QA), apesar de frequente na prática diária, é um tumor que gera questionamentos. O aspecto mais intrigante associa-se à sua posição no limite entre malignidade e benignidade. A abordagem do tumor, bem como sua classificação, é controversa. Na definição da conduta, é importante levar em conta o potencial de transformação para carcinoma espinocelular. Desse modo, a excisão cirúrgica é a terapia de escolha, sempre que possível. Algumas situações merecem atenção adicional, como a imunossupressão associada. Neste artigo, relatamos um caso de QA gigante em um paciente com síndrome da imunodeficiência adquirida tratado com cirurgia micrográfica de Mohs.

Keywords: Ceratoacantoma; Retalhos Cirúrgicos; Neoplasias Nasais; Neoplasias Cutâneas; Cirurgia de Mohs; Síndrome de Imunodeficiência Adquirida; HIV; Imunossupressão

The reconstruction of deep surgical defects of the nasal tip and wing of the nose often presents a challenge to the surgeon. In these cases, full-thickness skin grafting is widely used, but it often results in sinking or graft depression. We present a surgical technique that is easy to perform and reproducible; nonetheless still very little diffused in Brazil: the “Drumhead” graft. This method performs the grafting of a rigid plastic suspension together with the full-thickness skin graft. Thus, this technique constitutes another tool for the dermatological surgeon to prevent irregularities of undesirable contours, graft depression, and nasal vestibule collapse.

Keywords: Nose; Nose neoplasms; Skin neoplasms; Skin transplantation

INTRODUCTION: The perioral region is commonly affected by non-melanoma skin cancer. Mohs micrographic surgery is the treatment of choice in this area because it has the highest cure rate and preserves healthy tissue. Several methods are available for restoring the perioral region, and their selection is influenced by the surgical wound characteristics and the surgeon's preference.
OBJECTIVE: Describe the authors’ experience in perioral reconstruction after Mohs micrographic surgery and analyze the repair methods most frequently performed.
METHODS: Retrospective study of consecutive cases submitted to Mohs surgery and perioral reconstruction.
RESULTS: The study included 108 cases from 103 patients. The mean number of Mohs surgery stages was 1.4, and the mean defect size was 16 mm. Primary closure was the most used technique for reconstruction, followed by flaps (mainly V-Y, single advancement, and rotation). The association of repair methods was used in 28.7% of cases, mostly combined with flaps. Four patients had complications (necrosis and graft infection, trapdoor effect, and partial wound dehiscence).
CONCLUSION: Primary closure was the most frequent repair method, followed by flaps. Knowing reconstruction strategies and possibilities of associations is essential for proper restoration of the perioral region, maintaining its functionality, sensitivity and aesthetics.

Keywords: Lip; Lip neoplasms; Mohs surgery; Skin neoplasms

We report a case of a 72-year-old man who underwent surgical excision of a keratoacanthoma centrifugum marginatum (KCM) located on the left forearm. It is an uncommon variant of keratoacanthoma, which can assume large dimensions (up to 20 cm) and does not tend to spontaneous regression. The lesion is usually single, with raised borders, and has progressive centrifugal growth associated with central healing and atrophy. Due to its rarity and lack of pathognomonic histopathological features, KCM can be a diagnostic challenge for dermatologists and pathologists.

Keywords: Keratoacanthoma; Neoplasms; Skin neoplasms