Kenny Yamano

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A 61-year-old male with right facial pain and hearing loss was found to have a cerebellopontine angle epidermoid tumor that extended downward through the foramen magnum into the upper cervical spinal canal. The tumor was removed except for a small fragment of its capsule adherent to the brainstem. Only three such tumors with caudal extension have been(More)
Microangiography was performed on 65 femoral heads with advanced osteoarthritis to investigate the vascular changes on disintegration and repair of the femoral head. Affected femoral heads were removed during prosthetic replacement. A needle was inserted into the nutrient vessel of the extraosseous area and the contrast medium was injected by manual(More)
Even in extensive osteonecrosis of the femoral head in younger patients, a femoral head-preserving method is preferable. We developed a new technique using the lateral approach as used in traditional core biopsy; the osteonecrotic lesion was removed and impacted bone grafts were used to regain sphericity and prevent collapse. In this prospective one surgeon(More)
To study the revascularization pattern of nontraumatic osteonecrosis, superselective angiography of the femoral medical circumflex artery was done twice on 13 hips for which no treatment had been given. Angiographic evaluation of the hips with early-stage osteonecrosis not visible on radiographs showed the absence of superior retinacular arteries from the(More)
Raeder's syndrome consists of oculosympathetic paresis and ipsilateral facial pain, with variable involvement of the trigeminal and oculomotor nerves. A 63-year-old woman experienced severe facial pain, a partial Horner's syndrome, and restriction of ocular movements on the left side. A left carotid angiogram disclosed a giant aneurysm of the cavernous(More)
A case of crossed total hemiatrophy (right side of the face, and left side of the trunk and left extremities) with a right precentral to central arteriovenous malformation is reported. The atrophy of trunk and extremities was well accounted for by the contralateral arteriovenous malformation, but a pathological early auditory response was the only brainstem(More)
A case of a fresh type II fracture (Anderson & D'Alonzo) of the odontoid process treated with direct screw fixation is reported. A 52-year-old man complained of severe neck pain following a hit on his forehead incurred in a falling accident. Neurological examination was normal. Cervical spine x-ray films and axial CT scans revealed a fracture at the base of(More)
Microangiography was performed on 31 femoral heads with idiopathic osteonecrosis to investigate the pathogenesis of this disease from the aspect of circulation disturbance. Microangiography showed the following: (1) the interruption of the superior retinacular arteries in the extraosseous area; (2) the presence of numerous newly formed vessels of varying(More)
AIM To determine if the diuretic spironolactone cross reacts with 17alpha-hydroxyprogesterone (17OHP) in an enzyme linked immunosorbent assay (ELISA) kit used for the mass screening of congenital adrenal hyperplasia. METHODS Concentrations of 17OHP on a blood filter paper disc were measured using an ELISA kit (kit C-7: ENZAPLATE N-17alpha -OHP-7; Chiron,(More)