Sixteen male patients aging from 20 to 35 years had been submitted to Reconstructive Surgery with pediculate remnant of nape, from 2000 to 2003, at the Plastic Surgery Department of Agamenon Magalhães Hospital, Recife, Pernambuco (Brazil), for treatment of chronic inflammatory injuries of mycotic origin and 1 case of secondary injury due to electric burning with scalp necrosis and bone exposition, all located in occipital region. The internment time varied between 3 and 4 days. Three cases of necrosis of remnant tip had been identified, in retro-auricular region, measuring between 0.5 cm and 1 cm that had healed by second intention. Any case of pedicular necrosis or infection has been registered.The proposal technique presented advantages as the correction in only one surgical procedure and the direct closing of the injury with a good cosmetic aspect. As disadvantages, there were increase of glabrous area and, sometimes, the presence of hypertrophic scar, which, in patients´ opinion, did not compromise their quality of life.

Ameloblastic fibroma (AF) is a benign tumor of mixed odontogenic origin, which affects predominantly young individuals. AF appearing as a mixed radiographic image is very rare. This report describes a case of AF in a 12-year-old male identified during a routine radiographic exam for orthodontic treatment planning. The panoramic radiography revealed a well-defined multilocular mixed image located in the mandible between the roots of the left mandibular second premolar and first molar. The lesion was excised under local anesthesia. Histopathological analysis revealed islands of epithelial cells and columnar peripheral cells showing a nucleus in inverted polarization, interspersed with spindle-shaped cells and abundant extracellular matrix deposition. No atypia was observed. The diagnosis of AF was established. No tumor recurred up to 30 months after treatment. Although rare, AF should be also considered in the differential diagnosis of mixed radiographic images of the jaws in young patients. Key words:Ameloblastic fibroma, differential diagnosis, incidental finding, mixed image, radiographic features.

Luminescent spherical and monodisperse Er3+, Yb3+ co-doped Y2O3 nanoparticles were synthesized by homogenous precipitation followed by annealing. These nanoparticles exhibits high cell viability. On the basis of luminescence nanotermometry, the nanoparticles exhibits features of primary thermometer with high thermal sensitivity.