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We report a study of gradient index (GRIN) lenses as a miniaturized micro-objective for in vivo imaging in the context of the development of a nonlinear endomicroscope. A numerical study of the parameters influencing the lateral resolution, excitation, and collection efficiency, when GRIN lens is coupled with a double clad fiber (DCF), is exposed. Four… (More)
One hundred and twenty seven cases of cervical lymph node infection were seen between 1974 and 1986 in children aged between 1 month and 10 years. The point of origin of the infection wa identified in 30% of cases and was, in decreasing order: cutaneous, in the cervico-cephalic region; pharyngo-tonsillar via the lymphatic structures of the pharynx or by… (More)
A very rare case of localization in a large salivary gland (parotid) of a hemangiopericytoma in a 9 and 1/2 year old child. Detailed and discussed histopathological examinations resulted in a diagnosis of hemangiopericytoma (Nézelof, Gérard-Marchant). Despite wide excision by parotidectomy, there was a local recurrence two years later.