RESUMO
We experienced a 75-year-old male patient with a refractory and severely painful skin ulcer on the right back. He had suffered from ischemic heart disease and undergone percutaneous coronary intervention 5 months prior to the consultation with us. The characteristic clinical appearance, location of the lesion and his past medical history led us to the diagnosis of radiation-induced skin ulcer. Magnetic resonance imaging, computed tomography as well as bone scintigraphy showed fractures of the right back rib adjacent to the ulcer, which was thought to be attributable to bone damage due to X-ray radiation and/or persistent secondary inflammation of the chronic ulcer. In the published work, there are no other reports of bone fractures associated with radiation dermatitis after coronary interventional radiology.
Assuntos
Intervenção Coronária Percutânea/efeitos adversos , Lesões por Radiação/complicações , Fraturas das Costelas/etiologia , Costelas/efeitos da radiação , Úlcera Cutânea/etiologia , Idoso , Dorso , Humanos , Masculino , Radiologia IntervencionistaRESUMO
We developed a new hybrid consisting of Ag nanoprisms, poly(N-isopropylacrylamide) (PNIPAm), and fluorophores via layer-by-layer assembly. The fluorescence intensity below the lower critical solution temperature (LCST) of PNIPAm was 6.4 times stronger than that above the LCST, meaning that the hybrids can function as nanosized highly thermoresponsive fluorescent sensors.
Assuntos
Resinas Acrílicas/química , Equipamentos e Provisões Elétricas , Fluorescência , Nanoestruturas/química , Compostos de Prata/química , Temperatura , Coloides/química , Fenômenos Eletromagnéticos , Microscopia Eletrônica de Transmissão , Soluções , Espectrometria de Fluorescência , Água/químicaAssuntos
Angioceratoma/terapia , Terapia de Luz Pulsada Intensa , Neoplasias Cutâneas/terapia , Idoso , Humanos , Masculino , EscrotoRESUMO
Desmoplastic fibroblastoma is a rare, benign, soft tissue tumor. We describe a case of superficial desmoplastic fibroblastoma presenting as a protruding nodule. A 41-year-old woman presented with a painless, firm, elevated nodule with ulceration on her left thigh. Histological examination from total excision showed a well-circumscribed tumor in the dermis, which comprised of spindle, oval and stellate cells arranged in a haphazard fashion, accompanied by abundant collagenous stroma and inconspicuous vasculature. Immunohistochemically, the tumor cells were positive for vimentin, and focally positive for alpha-smooth muscle actin and muscle-specific actin, but negative for CD34, S-100 protein, desmin and beta-catenin. We diagnosed this case as desmoplastic fibroblastoma arising in the dermis and superficial subcutaneous tissue.
