RÉSUMÉ
Rosai-Dorfman disease in nasal cavity and nasal sinuses is known as an idiopathic proliferative disease of histiocytes with a distinct morphologic feature and is very rare. It is easy to relapse and be misdiagnosed. In on case, the infiltrating histiocytes had large round or oval nuclei. The cytoplasm was abundant, granular or vacuolated and foamy. Immunohistochemical studies showed that the histiocytes were strongly reactive with antibodies against S100 and CD68. The diagnosis of extranodal RDD in the paranasal sinuses could be differentiated with rhinoscleroma, eosinophilic granuloma, plasmacytoma, or fibrous histiocytoma. It showed that the identification of the distinctive histiocytes which are typically immunoreactive to S100 and CD68 can be quite helpful for correct diagnosis.
Sujet(s)
Adulte , Humains , Mâle , Histiocytose sinusale cytophagique , Anatomopathologie , Fosse nasale , Anatomopathologie , Sinus de la face , AnatomopathologieRÉSUMÉ
A female patient, now 6 years old, received cochlear implant in the right ear at the age of 2 (February, 2006). In August 16, 2010, a cervical spine MRI examination was required due to the cervical spine injury in order to confirm the diagnosis. Considering the cochlea coil may interfere with the MRI examination results, a local bandaging around the ear was given to isolate cochlear magnetic field. The results of cervical spine MRI examinations showed no obvious disturbance, which suggests that we could further explore this method clinically.