Introduction: Melasma is the principal cause of facial hyperchromia and has a significant psychosocial impact. Wood´s lamp has been a useful device to estimate the depth of melanin determined by light-induced fluorescence. A dermatoscope enables a clear visualization of pigments distribution, and the color variation of melanin will depend on its location within the skin. Objective: Evaluate the classifi cation of melasma according to depth of melanin by dermatoscopy and to correlate the dermatoscopic findings with its classifi cation using Wood’s lamp. Material and methods: Analysis of concordance between dermatoscopy and Wood’s lamp in the classification of melasma. Forty patients were evaluated by expert examiners, using a Wood’s lamp (Burton® UVA 360nm LE T5 4W BLB) and dermoscopy (Bley Med-Skincam® 40x or 3Gen Dermlite II ProHR® 10x), in an independent manner. The epidermal type was considered as the presence of a regular pigment network, with a brownish homogeneous pigmentation; dermal type as an irregular and mixed network with bluish-gray pigmentation; and mixed type as areas presenting both features. Results: The degree of concordance between the methods was considered weak (k < 0.2) by statistical analysis. Conclusions: The authors consider the technique more suitable, since it has allowed the visualization of the pigmentary components in a more objective way.

Keywords: CLASSIFICATION, MELANOSIS, DERMOSCOPY

Ultrasonography is a diagnostic imaging method, which is painless and non-radioactive, and based on the reflection of sound waves through the tissue. The recent development of high frequency and better resolution equipment has enabled the observation of superficial structures and the identification of the different layers, structures, and appendages of the skin, considerably increasing its use in various dermatological conditions - particularly in skin cancer. The authors present two cases in which the association of dermoscopic and ultrasound examinations allowed the careful in vivo analysis of tumor morphology, contents, size, thickness and vascularization, allowing the differentiation between basal cell carcinoma and hidrocystoma, and thus contributing to better pre-operative assessment.

Keywords: CARCINOMA, BASAL CELL; HIDROCYSTOMA; NEOPLASMS; ULTRASONICS

The presence of foreign bodies located on the skin, their size, constitution and precise location are often not perceptible on dermatological clinical examination. Despite their benign nature, the presence of foreign bodies in the skin is associated to high morbidity. High frequency ultrasonography has been widely used in different areas of Dermatology. Technological development and the introduction of devices offering high frequency and high resolution makes this method useful in identifying and guiding the removal of foreign bodies located in the skin. The authors describe a case where high frequency ultrasonography was used to identify and remove a rayfish stinger.

Keywords: ULTRASOUND; ULTRASSONOGRAPHY; FOREIGN BODY; SURGERY

Basal cell carcinoma is the most common type of nonmelanoma skin cancer, and the nose is the most common site. The treatment of choice, surgical excision, may cause nasal defects, which may be challenging for surgeons for maintaining functionality and aesthetics. When planning the reconstruction, one should carefully consider the nose’s anatomical features and the patient’s individual characteristics. We report four cases of nasal defects due to surgical excision of basal cell carcinoma approached with different closure techniques (primary closure, flap, graft, and second-intention healing), achieving equally satisfactory esthetic and functional results..

Keywords: Carcinoma Basal Cell; Nose; Reconstruction; Surgical Flaps; Skin Transplantation

The divided nevi occur in contiguous areas of the skin that are mostly benign lesions. We report six cases of nevus divided on the penis and its dermoscopic patterns. Clinical follow-up was the best therapeutic option for this group of patients, considering the location of these lesions.

Keywords: Dermoscopy; Nevus; Intradermal nevus; Pigmented nevus; Penis

In this cross-sectional study, we compared the diagnosis made through teledermatoscopy with histopathological diagnosis. Conventional and dermoscopic photos of 31 pigmented lesions were taken and sent to an experienced dermatologist using the WhatsApp^® Messenger application. A dermatopathologist excised and examined all lesions. The global accuracy of mobile teledermatoscopy was 90.32%. Regarding the ability of teledermatoscopy to define malignancy of the pigmented lesion, the specificity was 81.8% and the sensitivity was 100%. Our results provide additional evidence of the reliability of mobile teledermatoscopy with high sensitivity and accuracy.

Keywords: Dermoscopy; Teledermatology; Telemedicine

INTRODUCTION: Hidradenitis Suppurativa is a chronic inflamatory and relapsing disease. High levels of recurrence can persist even after wide local excision.
OBJECTIVE: Identify the main risk factors for postoperative complications of Hidradentis Suppurativa.
METHODS: We included journal articles with data from Google, Pubmed, Lilacs, and Scielo, in Portuguese and English, from 2000 to 2021.
RESULTS: The main risk factors that influence postoperative outcomes are related to surgical technique, disease severity, comorbidities, and adjuvant clinical therapy.

Keywords: Hidradenitis suppurativa; Risk factors; Postoperative complications