Masaharu Sudo

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Immunohistochemical analyses were used to investigate the distribution of lymphocytes and macrophages in routine human temporal bone sections obtained from a subject with acute suppurative otitis media. Primary antibodies specific for human CD3 and CD43 (T-lymphocytes), CD20 (B-lymphocytes), CD45 (leukocyte common antigen), and CD68 (macrophages) were used.(More)
A computer-aided 3-D reconstruction and measurement method was used to assess postnatal volume and height changes in the tympanic cavity. Materials used were 14 normal human temporal bones obtained from 6 infants (under 1 year of age) and 8 adults (over 18 years of age). After defining the boundaries of the tympanic cavity, its total volume and height and(More)
Histologic sections of human temporal bone with Eustachian tube attached were examined to investigate the changes that occur in folding of the Eustachian tube (ET) as it develops postnatally. Study of 45 specimens from individuals aged 3 months to 88 years of death, including 5 cases with chronic otitis media (OM) with perforation and 5 with OM with(More)
Histologic sections from nine temporal bones with eustachian tubes (ETs) attached were analyzed with a computer-aided three-dimensional reconstruction method to determine the curvature and tilt of the ET and the anatomic relationships between the medial lamina of the ET cartilage, the levator veli palatini muscle (LVPM), and Rosenmüller's fossa. It was(More)
Postnatal developmental relationships in human ears were studied by a computer-aided three-dimensional reconstruction and measurement method. We measured the angle, in reference to the horizontal plane, between the tympanic annulus, the oval window, and the internal auditory canal (IAC) in 20 normal temporal bones obtained from individuals between 1 day old(More)
The postnatal development of the Eustachian tube (ET) and its surrounding structures was investigated by means of computer-aided three-dimensional (3-D) reconstruction methods in 13 normal human temporal bones, obtained from individuals 3 months to 71 years old. The cross-sectional area, width and height of the lumen in most of the cartilaginous portion of(More)
Nine normal human temporal bones from persons 16 to 88 years old were studied by computer aided three-dimensional reconstruction and measurement. The length of the eustachian tube (ET) lumen in three portions (from pharyngeal orifice to tympanic orifice: cartilaginous, junctional, and bony) averaged 23.6 +/- 4.3 mm, 3.0 +/- 1.9 mm, and 6.4 +/- 2.6 mm. The(More)
Penetrating injury of the pharynx is rare, but it can cause serious sequelae in children. A 12-month-old boy was impaled with a toothbrush in the retropharyngeal space after falling from a baby-bed. The point of the toothbrush was embedded beside the carotid artery and was removed by endoscopic surgical technique. The patient was discharged without(More)
Eleven human temporal bone-eustachian tube (ET) specimens obtained from 11 individuals (ages, 3 months to 88 years) were studied to investigate the static volume of the ET lumen. The volumes were measured by computer-aided 3-dimensional reconstruction and measurement methods. Four of the 11 individuals were children, and the remaining 7 were adults. The(More)
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