Introduction: Skin cancer is the most common type of neoplasia in humans, with ultraviolet radiation being considered the main cause. Basal cell carcinoma is the most frequent cutaneous neoplasia, and photoprotection is seen as the most effective measure in its prevention. Nonetheless, there is still some resistance to the use of sunscreens among the general population. There is also a lack of reports in the literature on whether such resistance differs in patients with basal cell carcinoma. Objectives: To evaluate whether there is change in habits regarding exposure to the sun and use of sunscreen after diagnosis of basal cell carcinoma in patients treated at the Dermatology Outpatient Clinic of Universidade Federal de Ciências da Saúde de Porto Alegre (RS), Brazil. Methods: A cross-sectional study was carried out with 120 patients diagnosed and treated for basal cell carcinoma, who responded to a questionnaire regarding their sun exposure habits and use of photoprotection methods before and after diagnosis. Results: Of the 120 patients interviewed, 73.3% reported changes in their habits regarding exposure to the sun and use of sunscreen after receiving a diagnosis of basal cell carcinoma. The main reasons alleged by those who denied having changed their behavior towards sun exposure (26.7%), were the lack of fear of new tumors, as well as the high cost of sunscreens. Conclusions: A diagnosis of basal cell carcinoma motivates most patients to improve their use of preventive measures regarding protection from the sun. Nonetheless, about a third of the studied population still resisted such measures, the main reason cited being the high cost of sunscreens. Therefore, awareness campaigns about the importance of using photoprotection methods to prevent skin cancer must be implemented, and the development of programs aimed at making sunscreens available to the general population – especially to high-risk patients – must be sought.

Keywords: SKIN NEOPLASMS, CARCINOMA, BASAL CELL, HEALTH EDUCATION

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

Basal cell carcinoma is the most common type of cancer and its non-surgical treatment has been the subject of many studies. Large lesions of this tumor are therapeutic challenges and the effective topical treatment has good applicability. The authors present a female patient diagnosed with multicentric superficial basal cell carcinoma in the lumbar region for more than 20 years, who refused to be treated surgically. The tumor reached dimensions of 12 cm x 10 cm. A decision was made for a non-surgical therapy, with the application of Imiquimod in a treatment of 5 weekly applications for 2 months. The treatment led to a clinical and histological cure, without recurrence to date (36 months), with excellent aesthetic results and few side effects.

Keywords: CARCINOMA, BASAL CELL; THERAPEUTICS; NEOPLASMS

The nevus sebaceous of Jadassohn is a congenital benign hamartoma of the skin that occurs more frequently in the scalp, but can also arise in the face. Due to its potential for malignization, exeresis is often required. Lesions located in the scalp are challenging to surgeons because of the anatomical characteristics of this body site, namely scarcity and inelasticity of the adjacent skin. In the present report, the authors describe a case of excision of a nevus sebaceous of Jadassohn located in the scalp, using a bilateral rotation flap – a very straightforward and versatile technique, excellent for reconstructing difficult topographies such as the scalp – for the closure of the surgical wound.

Keywords: AMBULATORY SURGICAL PROCEDURES; NEVUS, SEBACEOUS OF JADASSOHN; SURGICAL FLAPS

Basal cell carcinoma corresponds to the majority of malignant cutaneous malignancies in Brazil, predominating in middle-aged white individuals, mainly affecting the upper two-thirds of the face and occurring due to several etiological factors. The ideal treatment consists of complete removal with free lesion margins. For better functional and aesthetic results, reconstruction of the surgical wound with flaps or grafts may be necessary. Two types of reconstruction are described in patients with double surgical defects on the face, close to each other: one with a single rotation flap and another with a double rotation flap, also called Yin-Yang.

Keywords: SKIN NEOPLASMS; CARCINOMA, BASAL CELL; SURGICAL FLAPS

The sebaceous nevus of Jadassohn is a congenital hamartoma that may develop into a malignant cutaneous neoplasia. Photodynamic therapy is used to treat actinic keratoses and superficial or nodular basal cell carcinomas, and the cutaneous field cancerization can be observed using the Wood's lamp during the performance of the technique. This article describes a case of photodynamic therapy used in the treatment of a basal cell carcinoma, which developed on a sebaceous nevus, where the field cancerization was demonstrated through the use of Wood's lamp. The procedure is a non-surgical alternative for the treatment of the basal cell carcinoma, with excellent aesthetic outcome. The patient is on clinical follow-up, with absence of recurrence of the neoplasia 18 months after the treatment.

Keywords: CARCINOMA, BASAL CELL; NEVUS, SEBACEOUS OF JADASSOHN; PHOTOCHEMOTHERAPY

Described by Jadassohn and also known as organoid nevus, nevus sebaceous is considered a hamartoma that exhibits follicular, sebaceous, eccrine and apocrine malformations of varying degrees. Between 10% and 30% of patients with sebaceous nevi of Jadassohn are at risk of developing cutaneous or adnexal neoplasia during adulthood. The authors describe the case of a patient with nevus sebaceous of Jadassohn associated with multiple tumors (benign and malignant) of different strains, highlighting the importance of the dermatologist physician’s knowing this entity and how to perform an examination of the scalp.

Keywords: Carcinoma, Basal Cell; Hamartoma; Neoplasms; Nevus sebaceous of Jadassohn

The sebaceous nevus of Jadassohn is a benign neoplasia, usually present at birth. It usually arises as a small yellowish and oval plaque in the scalp and face, with large lesions being uncommon. The authors report a case of an atypical and exuberant sebaceous nevus of Jadassohn, located in the frontal-parietal-occipital region of a male child, associated with alopecia.

Keywords: Hamartoma; Nevus, sebaceous of Jadassohn; Sebaceous glands; Skin neoplasms

Basal cell carcinoma (BCC) is more common in the lower eyelid region when it affects the periorbital region. It occurs predominantly in men between 50-70 years and has a high recurrence rate. Although it rarely metastasizes, orbital invasion can occur. This study aims to present a case of pigmented BCC of unusual location. The location of BCC in the upper eyelid region is rare, and dermoscopy is essential to distinguish it from its primary differential diagnoses.

Keywords: Basal cell carcinoma; Dermoscopy; Eyelid Neoplasms

Cryosurgery is a technique widely known and used among dermatologists. Intralesional application is already used to treat keloids and has the advantage of restricting the zone of action of low temperatures of liquid nitrogen. The use of contact cryosurgery in vascular lesions is well reported in the literature, but there are no intralesional technique publications on these types of lesions. Here, we report two cases, one of port-wine stain hamartomas in a 61-year-old patient and another of a cherry angioma in a 70-year-old patient, safely and satisfactorily treated with intralesional cryosurgery.

Keywords: Cryosurgery; Cryotherapy; Hamartoma; Hemangioma; Vascular malformations

The recurrent squamous cell carcinoma (SCC) needs an appropriate approach to decrease the risk of recurrences. We report the case of a man diagnosed with SCC on the left temporal region treated by conventional surgery, with infiltration and erythema in the scar area. Reflectance confocal microscopy suggested the diagnosis of recurrent SCC confirmed by histopathology. New surgery and traditional intraoperative frozen section were performed. After two months, the patient had a new relapse, finally treated with Micrographic surgery without new involvement. This article highlights the importance of micrographic surgery in treating SCC, aiming to decrease new recurrences.

Keywords: Skin Neoplasms; Mohs Surgery; Carcinoma, Squamous Cell

Nevus sebaceous of Jadassohn is a congenital skin hamartoma often located on the face and scalp. A small percentage of these tumors evolve into malignant lesions, including basal cell carcinoma. We report a case of an elderly patient with nevus sebaceous since early childhood that evolved with a malignant transformation from the lesion to basal cell carcinoma. The treatment performed was surgical excision using Mohs surgery.

Keywords: Nevus, Sebaceous of Jadassohn; Carcinoma, Basal Cell; Mohs Surgery

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

Sarcomas são neoplasias mesenquimais malignas, raras, que acometem, principalmente, crianças e adolescentes. O rabdomiossarcoma, subtipo oriundo da musculatura esquelética, é condição incomum em adultos, acometendo sítios de localização não habitual, crescimento rápido e de difícil tratamento. Apresenta-se caso de adulto jovem com nodulação em lóbulo auricular esquerdo, cuja análise histopatológica e imuno-histoquímica confirmou tratar-se de rabdomiossarcoma alveolar, o qual foi conduzido em conjunto com a Oncologia.

Keywords: Rabdomiossarcoma Alveolar; Miogenina; Desmina; Excisão de Linfonodo

Basaloid follicular hamartoma (BFH) is a rare and benign adnexal tumor that resembles basal cell carcinoma (BCC) and may present with different clinical manifestations. A mutation in the PTCH gene, involved in Gorlin-Goltz syndrome, could be associated with the pathogenesis of this neoplasm. We describe the case of a 7-year-old girl with multiple papules on her face.

Keywords: Hamartoma; Carcinoma, Basal cell; Genes, Tumor suppressor.