SUMMARY: Hemangiomas are the most common non-cystic benign liver tumors. Typically, they are incidentally discovered through routine radiological imaging. These tumors can become complicated and develop fibrosis, with the extreme presentation being hepatic sclerosing hemangioma (HSH), a very rare, atypic...
La transformación nodular angiomatoide esclerosante es una patología vascular benigna del bazo, desarrollada a partir de la pulpa roja, de etiología desconocida. Se postula que puede estar relacionada con la enfermedad por inmunoglobulina 4 y la infección por el virus de Epstein-Barr. La mayoría de ...
Abstract: Dermatofibroma is a proliferation of spindle cells located in the dermis. We used scanning electron microscopy to examine two histologically confirmed lesions and observed preserved collagen bundles in the perilesional area. In the lesional area, the collagen was denser, without formation of bu...
Abstract Atypical fibroxanthoma is a rare superficial fibrohistiocytic tumor. Clinically, it presents itself as a painless, solitary, ulcerated, and slow-growing nodule found mainly on sun-exposed areas - especially of the head and neck - of elderly individuals. The diagnosis is based on histopathologica...
El dermatomiofibroma es un tumor benigno infre-cuente de origen mesenquimático. Generalmente, se presenta como un tumor rosado nodular, espe-cialmente en mujeres en la década de los 30, en hombros y axila. Clínica e histológicamente puede simular otros tu-mores mesenquimáticos como el dermatofibroma...
Abstract: Multinucleate cell angiohistiocytoma is a rare idiopathic benign fibrohistiocytic and vascular proliferation usually presenting as multiple asymptomatic papules, red to violaceous in colour, primarily located on the extremities of middle-aged females. This entity is probably underdiagnosed due ...
El patrón en arcoiris ha sido un tema controvertido, dado que en un principio se planteó como un patrón dermatoscópico específico asociado al diagnóstico de Sarcoma de Kaposi. Sin embargo, esta asociación ha sido cuestionada por diversos reportes que han evidenciado la presencia de este patrón de...
Abstract: We report a case of dermatomyofibroma that, to our knowledge, is the second case reported in Brazil. About 100 cases have been reported worldwide. Dermatomyofibroma represents a rare, benign mesenchymal neoplasm of fibroblastic/myofibroblastic differentiation, with prolonged evolution and littl...
Abstract: Dermatofibroma is a frequent benign tumor of easy clinical diagnosis in most cases, but that can mimic other dermatoses. Dermoscopy may help to define the diagnosis and its classical pattern is a central white area, similar to a scar, surrounded by a discrete pigment network. However, dermoscop...
We report the case of an 11-year-old male patient with a histopathological and immunohistochemical diagnosis of dermatofibroma with an atypical clinical presentation on the right forearm. Although dermatofibroma is considered a benign skin tumor, some of its differential diagnoses, such as dermatofibrosa...
