[ intrathoracic desmoid tumors]

The desmoid tumors are rare benign fibrous tumors, its intra-thoracic localization is exceptional. Authors report three cases of intra-thoracic tumors, 2 of them were operated. The cases were 3 females, aged 27 to 32 years old, with a mean age of 29,6 years. The symptomatology was silent, in all of them, dominated by chest pain, one case had a palpable mass. The radiological examination did not show a suggestive evocative aspect. The diagnosis depends on the histological findings 2 cases have been operated, and despite the carcinologic resection, relapse occurred in one patient after 9 months. Due to the tumor extensive and infiltrative character its illdefined limits, the third case had only a radiochemotherapy treatment. Our series shows the importance of a well knowledge of these rare tumors, before any therapeutic surgical treatment decision

[ common peroneal nerve compression by a synovial cyst]

The synovial cyst compressing the fibular common nerve is a little known entity at the origin of diagnosis mistakes. The authors recall about a new case the clinical symptomatology: pain of the knee followed by steppage. The palpation can recover a swelling at the level of the fibular neck. The electromyogram permits to localize the nervous lesion comfortably . Our observation puts in evidence the interest of the magnetic resonance imaging. The surgical intervention must search for a possible communication of the cyst with the proximal tibio-fibular joint. The neurological prognosis is generally good in case of recent deficit

[ child's neuroectodermic melanotic tumors: one case report]

The child's neuroectodermic melanotic tumors represent a quite rare entity, and is often seen before the age of one year. Higher jaw bone represents the most frequented localization, followed by cranian localization. The histogenesis of the child's NMT has been debated for a long time. Thanks to molecular, histochemical, biochemical and ultrastructural studies, the neuroectodermic origin is admitted at present. The child's NMT prognosis remains unknown, they are considered as benign tumors although 10 to 15% of local recurrences, and 2 to 6% of malignant forms has been reported in literature. We report one case of the child's NMT of posterior cranian position in a four month infant being operated for a right occipital mass. Operatory fragment has been put through a morphological study coupled with an immunohistochemical marking [Cytokeratin, Vimentin, Membranary Epithelial Antigen]