Introduction: The subungual glomus tumor is characterized by painful nodules triggered by thermal and tactile change. A complete lesion excision is the treatment of choice but relapses are frequent. Objective: To compare the rates of recurrence of conventional surgeries described in the literature with the ones we found after the Mohs micrographic surgery (MMS). Material and ethods: We included 10 patients diagnosed with subungual glomus tumor of which 9 were female and 1 male and who also underwent withdrawal of these lesions by the technique of Mohs micrographic surgery. Results: Of the 10 patients, eight were considered cured after following 14 to 93 months (around 47.8 months). There were two recurrences which occurred after 47 and 51 months, respectively. One case was reoperated by MMS without evidence of disease after 24 months. Conclusion: The results obtained with the use of MMS in subungual glomus tumors were similar to those reported in the literature with conventional techniques, usually with more limited follow-up.

Keywords: MICROGRAPHIC SURGERY, MOHS MICROGRAPHIC SURGERY, GLOMUS TUMOR

Introduction: The granular cell tumor was first described by Abrikossoff in 1926. It is a benign, uncommon neoplasia, most frequently found on the tongue. It occurs in the vulva in 5 to 6% of cases. Its histogenesis is not known for sure, but is probably linked to Schawann cells. It is treated surgically, with a good prognosis. The tumors may recur, and some may become malignant according to the literature. The authors describe a case of a vulvar nodule with a histopathologic diagnosis of granular cell tumor, which was successfully treated with surgery.

Keywords: VULVA, VULVAR DISEASES, VULVAR NEOPLASMS, GRANULOSA CELL TUMOR

Introduction: Glomus tumors are rare benign lesions that are most often found on the tips of the fingers; they account for 1.0-4.5% of neoplasias on the hand. Subungual glomus tumors occur more frequently in women in their 30s and 50s.
Objective: This study evaluated glomus tumor patients'''''''' epidemiological profiles, their satisfaction with the treatment and the rate of recurrence due to incomplete removal.
Method: The records of patients that were treated for glomus tumors at a dermatology clinic between 1992 and 2011 were evaluated regarding gender, age, profession, affected area of the body, satisfaction with the treatment and possible recurrence.
Results: The patients (n = 8, average 63 years) were older than those usually described in the literature. The most frequently described profession was that of housewife. All patients were satisfied with the aesthetic results of the treatment. There was a total improvement of the pain in threepatients, while patients with a partial improvement in pain experienced a recurrence. The recurrence rate due to incomplete removal was 50%.
Conclusion: The surgery''''''''s effectiveness can be measured by the improvement of the pain; persistence of pain can indicate recurrence.

Keywords: THERAPEUTICS, GLOMUS TUMOR, NAILS

The subungual glomus tumor is a benign neoplasia of glomus cells and is clinically characterized by paroxysmal pain and hypersensitivity to cold, which causes functional impairment to patients. Diagnosis is based on history and physical examination, and can be better guided based on radiologic study - with ultrasound and Doppler. The authors demonstrate clinical and ultrasonographic aspects of a case, describing the surgical procedure.

Keywords: GLOMUS TUMOR; ULTRASONOGRAPHY, DOPPLER, COLOR; AMBULATORY SURGICAL PROCEDURES.

Case report of a male patient bearing a rare granular cell tumor in the left arm, confirmed by histology and immunohistochemistry (positive S100 and CD68 proteins).

Keywords: ARM; GRANULAR CELL TUMOR; SKIN NEOPLASMS

The granular cell tumor, also known as Abrikossoff tumor, is a rare neoplasm with controversial etiology that usually arises as a solitary benign lesion. The authors describe a case of multicentric granular cell tumor in a 13-year old patient treated with surgical excision.

Keywords: GRANULAR CELL TUMOR; NEOPLASMS, SOFT TISSUE NEOPLASMS; S100 PROTEINS

Introduction: Glomus tumor is a benign and rare neoplasm that appears as solitary and painful nodule, mainly subungual. It presents characteristic clinical manifestations such as paroxysmal pain and sensitivity to local pressure and to cold.
Objective: To conduct a clinical epidemiological survey of glomus tumors diagnosed in a reference unit in 16 years.
Methods: Retrospective study assessing clinical and epidemiological data of 15 patients with glomus tumor confirmed by histopathological report from 2000 to 2016. Data on age, gender, tumor location, associated symptoms, duration of symptoms until diagnosis, clinical presentation, histological type and recurrence after surgery were analysed.
Results: Fifteen cases were diagnosed, 11 in women (73.3%) and four in men (26.7%). Mean age was 63 years. The most frequent location was the subungual region. Mean duration of symptoms until diagnosis was 8 years.
Conclusions: In this study, the number of cases of glomus tumor fluctuated throughout these 16 years, with a mean of 0.9 cases/year. A higher prevalence in women over 60 years, subungual region location and solid glomus histologic subtype was observed.

Keywords: GLOMUS TUMOR; NAIL DISEASES; NEOPLASMS

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

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

Neurofibromatosis type I (NF1) is an autosomal dominant disease, with an incidence of 1/2,500-3,000 births and a prevalence of approximately 1/4,000-5,000 individuals. Genetic mutations in the NF1 gene cause it, affecting neural and skin tissues. Glomus tumor is a benign neoplasm originating from the glomus, a neuromyoatrial structure of the skin present at the fingertips and involved in thermoregulation. The literature historically considered these tumors isolated and sporadic, but some studies have proved a relationship with neurofibromatosis type I. Thus, patients with neurofibromatosis type 1 should be investigated. The case report provides additional support for the notion that NF1 has a risk associated with multiple glomus tumors.

Keywords: Glomus Tumor; Association; Case Reports; Neoplasms; Neurofibromatoses

A Covid-19, doença causadora de síndrome gripal e insuficiência respiratória aguda, vem demonstrando provocar danos a diversos outros órgãos e sistemas. Várias manifestações dermatológicas já foram descritas. Relatamos um quadro de alopecia areata (AA) desencadeada possivelmente pela Covid-19 em paciente que, apesar de ter seu RT-PCR para SARS-CoV-2 negativo, apresentou IgM reagente e sintomatologia clássica relacionada à doença. Acreditamos que a Covid-19 possa ter desencadeado resposta imunológica autoimune, com a consequente produção de interferons, que levou ao quadro de AA.

Keywords: Alopecia em áreas; Autoimunidade; Coronavirus

Squamous cell carcinoma (SCC) has the second highest incidence rate among non-melanoma skin cancers. About 5% of cases progress to locally advanced and/or metastatic lesions, making the surgical approach often unfeasible. Based on this, we performed a literature review on the use of immunotherapy drugs to treat advanced SCC. The results showed that immunotherapy is a potential therapeutic strategy due to the antitumor activity promotion through the individual immune response, reducing the adverse events of surgeries, chemotherapy, and radiotherapy

Keywords: Squamous cell carcinoma; Tumor Evasion; Immunotherapy; Skin neoplasms

Pilomatricoma is a benign skin tumor derived from the hair follicle. It has a varied etiology, and the traumatic one is often described as a triggering factor. The surgical treatment is curative and, therefore, the choice. We report a case of an atypical clinical presentation pilomatricoma – an ulcerated nodule topped by a central hematic crust, with peripheral telangiectasias probably triggered by the HPV vaccination. The ultrasound examination suggested the possibility of a chronic inflammatory granuloma, although the histopathological examination was definitive and confirmed the diagnosis of pilomatricoma.

Keywords: Papillomavirus vaccines; Hair follicle; Ultrasonography, Doppler; Skin neoplasms

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.

Arterial pseudoaneurysm is a rare complication caused by damage to the arterial wall, resulting in a locally confined hematoma connected to the lumen of the artery. We report the case of a patient on anticoagulants who developed nodules at the surgical wound site after Mohs micrographic surgery for basal cell carcinoma. The initial clinical suspicion was the formation of a simple hematoma. However, Doppler ultrasound examination revealed the presence of pseudoaneurysms in the bilateral supratrochlear arteries. We believe this is the first reported case of supratrochlear artery pseudoaneurysm following dermatologic surgery.

Keywords: Aneurysm, False; Carcinoma; Basal Cell; Ultrasonography, Doppler, Color