[Cancer arising in a cyst of the thyroglossal tract].

Two new cases of thyroglossal cyst carcinoma are reported. Such cancers concern rather young women. The diagnosis must be suspected whenever a thyroglossal cyst is associated with cervical adenopathies.

[Cholesterol granuloma of the middle ear. Apropos of 3 cases].

Cholesterol granulomas arise scarcely within the middle ear cavities revealed by a conductive deafness. They appear on the CT scan as a non specific mass developed in the middle ear cavities with bone defects. MRI allow the diagnosis as cholesterol granulomas is defined by hyperintensity on all sequences.

[Effects of mannitol on the fluids of the internal ear. Use in the treatment of deafness].

The action of mannitol upon the inner ear fluids was studied experimentally by means of kinetics of mannitol entry into cochlear perilymph and endolymph in rats. A daily two hours infusion of 10% mannitol induces an osmotic water flow from cochlear fluids toward plasma. Following this therapeutic protocol, progressive, non-tumoral sensorineural hearing loss is enhanced in 32% of the cases.

[Recent data on malignant melanoma of the upper respiratory and digestive tract mucosa. Apropos of a case].

The choice of a therapeutic strategy for the treatment of mucosal malignant melanomas from upper digestive and respiratory tracts remains difficult. This is due to the very low frequency of such malignancies and to the subsequent scarcity of data on parameters of diagnosis and prognosis. Such informations have been available on cutaneous malignant melanoma as they have been known for a longtime and occur with much higher frequency.

[Neonatal facial paralysis. Our experience apropos of 44 cases].

Forty-four cases of neonatal facial paralysis have been treated in the ENT department for children in the hôpital Trousseau, paris. In nearly half of the cases the etiology was related to nervous or muscular aplasia, while in the other cases of traumatic, infective, or doubtful etiology, the severity and course of the paralysis served as a guide to choice of therapy. Surgery was indicated in only 13 cases and recovery was obtained in 4 infants, with more or less marked sequelae.