André Gentine

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OBJECTIVES Sinonasal sarcoidosis remains a poorly understood and uncommon chronic granulomatous disease of unclear origin. We have attempted to characterize the main clinical and radiologic criteria for diagnosis and to discuss the treatment. METHODS A retrospective study of 15 cases of chronic, symptomatic, and biopsy-proven sinonasal sarcoidosis and a(More)
In order to explain the mechanical effects that arise when a semi-circular canal is thermally stimulated in the horizontal position (i.e. in the absence of gravity effects) a physical model was used. The duct (corresponding to the canal) is deformable, the pressure transducer (corresponding to the ampulla) is not deformable. There is no thermal similarity(More)
Caloric stimulation acts on the bio-accelerometer (the semi-circular canal), as on engineered ones, through second order type multiple pathways. Three temperature induced peripheral actions have been described in our previous reports. The hydrostatic mechanism induces in the endolymph a gravity dependent transcupular stationary pressure difference. The(More)
The properties of the membranous wall of the semi-circular canal and of the labyrinthine fluids give as a result the inflating pressure of this inflatable structure. The difference of osmotic pressure between perilymph and endolymph, which is involved in this problem, depends on temperature. Therefore, a caloric stimulation leads to a change in the(More)
Two siblings (a boy and a girl) had congenital renal tubular acidosis (RTA) with nephrocalcinosis. Hearing loss due to nerve deafness was diagnosed at 13 1/2 and 9 years of age, respectively. The parents, who are second cousins, are healthy. They have another boy who is unaffected. This is in accordance with an autosomal recessive gene. The association of(More)
Pseudorandom binary rotatory stimulation is used to study the vestibulo-ocular reflex (VeOR) frequency response (from 0.01 to 0.64 Hz). Fifty-two normal subjects volunteered for this test. The transfer function's gain and phase, and the corresponding coherence function between slow phase eye velocity and head velocity were computed. According to the(More)
In this first article of four the problem is displayed using experiments on humans for two kinds of gravity related positions. In each case the nystagmus depends sinusoidally on a particular orientation of the canal to the vertical. In each case, too, a dissymmetry of the response occurs. This kind of behavior confirms that the caloric stimulation induces(More)
PURPOSE This study aimed to evaluate the value of diffusion-weighted imaging (DWI) and gadolinium-enhanced dynamic magnetic resonance imaging (MRI) for differentiating benign and malignant parotid gland tumors, and for characterizing the various histological types (pleomorphic adenoma, and Warthin's and malignant tumors). PATIENTS AND METHODS This(More)