[Jadassohn's sebaceous nevus]. / Naevus sébacé de Jadassohn.

We report the case of a child's Jadassohn sebaceous noevus, localised on the vertex cranii, the trunk and the limb, associated with the presence of ophthalmological and neurological abnormalities. The diagnosis of this syndrome has been difficult because all the signs were not present at birth. The surgical treatment of the vertex cranii lesions will be realised after expansion with sub cutaneous prothesis, allowing a large exeresis and an adequate reconstruction. Only the anatomo-pathological examination allows any malignant degeneration of the lesion.

[A protocol for contact lenses adaptation in aphakia and myopia in children; surveillance and follow-up]. / Protocole d'adaptation des lentilles de contact de l'aphakie et de la myopie chez l'enfant; surveillance et suivi.

The authors report their procedure of contact lens adaptation in child and particularly after traumatic cataract. Adaptation in the briefest time following cataract surgery is absolutely necessary in order to undertake jointly the orthoptic treatment of amblyopia.

[Difficulty in diagnosing an orbital non-Hodgkin's lymphoma]. / Difficulté du diagnostic d'un lymphome non Hodgkinien à localisation orbitaire.

History case of a patient treated for a bilateral orbital inflammatory pseudotumor has been rehospitalised for generalised lymphoma, despite the histological features of this tumor which evoked a pseudo-tumor. This error seems to be frequent because of the difficulties for the histological investigation of the tumor. Actually the application of immunohistochemical techniques and the study of immunoglobulin gene DNA rearrangement patterns allows the diagnosis. Often most of the orbital lymphomas, though apparently isolated, represent a localization of a systemic disease. Their treatment consists in either of radiotherapy in low grade malignancy localized cases or in chemotherapy in the others sometimes associated to radiotherapy.