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M I Redleaf

Publications and source records attributed to M I Redleaf.

18 recordsLinked to original sources
PubMed1996

Distance from the labyrinthine portion of the facial nerve to the basal turn of the cochlea. Temporal bone histopathologic study.

The middle cranial fossa approach to lesions of the geniculate ganglion and internal auditory canal preserves cochlear function and affords access to the lateral internal auditory canal. The labyrinthine portion of the facial nerve tends to course near the basal turn of the cochlea, just beneath the middle cranial fossa floor, and is usually dissected in this approach. To determine the distance from the labyrinthine portion of the facial nerve to the basal turn of the cochlea, measurements were obtained in the temporal bones of 24 subjects (48 ears) 9 to 76 years of age. These subjects had no history of facial nerve or ear disease, and had normal audiograms. The distances ranged from 0.06 to 0.80 mm, with 21 of 24 right ears (87.5%) showing distances less than the standard size of the smallest diamond drills (0.6 mm), and 18 of 24 (75%) less than 0.5 mm. Incidental note is made of the distance from the geniculate ganglion to the ampulla of the superior semicircular canal, which ranged from 2.06 to 4.88 mm in the 48 specimens. These measurements can serve as guidelines for the surgeon working in the middle cranial fossa.

Adolescent↗
PubMed1995

Parathyroid adenoma associated with a branchial cleft cyst.

An unusual case of parathyroid adenoma is presented. This adenoma presented as a rapidly expanding neck mass in a normocalcemic patient. It was located far laterally in the neck, in association with the internal jugular vein and with a branchial cleft cyst. This case provides an unusual presentation of parathyroid adenoma. It also provides an elegant demonstration of developmental anatomy as well as the mechanism of parathyroid ectopia in the lateral aspect of the neck.

Adenoma↗
PubMed1995

Medullary carcinoma of the thyroid metastatic to the temporal bone.

We report a case of proven thyroid medullary carcinoma, metastatic to the temporal bone. Review of the otolaryngology literature demonstrates that this is the first such report. The patient presented with symptoms, physical examination, and imaging studies suggestive of a glomus jugulare tumour. The pre-operative diagnosis of metastatic thyroid medullary carcinoma, however, was made, based on a history of medullary carcinoma of the thyroid with previous metastases as well as an elevation in calcitonin levels. Histological examination of the surgical specimen confirmed the diagnosis.

Carcinoma, Medullary↗
PubMed1995

Pneumomediastinum after rigid bronchoscopy.

The accumulation of extrapulmonary air is a well-known complication of airway endoscopic procedures. However, pulmonic disease alone can predispose toward pneumomediastinum and pneumothorax, without iatrogenic manipulation. In this case, a portable chest radiograph diagnosed the cause of the sudden accumulation of extrapulmonary air after rigid bronchoscopy as alveolar rupture, rather than iatrogenic airway perforation. The pathophysiology of pneumothorax and pneumomediastinum and the interpretation of chest radiographs in these situations is reviewed.

Aged↗
PubMed1995

Spiral ganglion cell survival in labyrinthitis ossificans: computerized image analysis.

Obstruction of the cochlear scale by ossification and fibrosis, which can now be imaged by computed tomography, has been proposed as a predictor of ganglion cell survival. Subjects for this histopathologic temporal bone study were 12 profoundly deaf patients with labyrinthitis ossificans. Controls without ossification were 16 normal-hearing patients and 16 profoundly deaf patients. All temporal bones were graphically reconstructed. Computerized image analysis obtained the percentage of scalar obstruction in 12 temporal bones with labyrinthitis ossificans. Statistical analyses could demonstrate no relationship between spiral ganglion cell survival and obstruction. There was much interindividual variability in ganglion cell count among the 44 temporal bones. Ganglion cell survival was significantly less in the two deafness groups than in the normal group, but did not differ significantly between the two deafness groups. Therefore, cochlear labryinthitis ossificans is not a preditor of ganglion cell survival and should not be a contraindication to cochlear implantation.

Adolescent↗
PubMed1995

Diatrizoate and dextran treatment of sudden sensorineural hearing loss.

Many treatments have been proposed to manage sudden sensorineural hearing loss. The University of Iowa has used a protocol of intravenous radiopaque contrast and volume expander for the last 10 years in the treatment of sudden sensorineural hearing loss. A retrospective analysis of these cases was performed to review the efficacy of this treatment with respect to the natural history of the disease, as reported in previous studies. Sixty-four percent of 39 cases showed audiometric improvement in their pure-tone averages, speech reception thresholds, and speech discriminations while receiving treatment. Forty-eight percent of these showed improvement after their first treatment doses. Eighty percent of patients who presented more than 7 days after the onset of their hearing loss showed audiometric improvement with treatment, whereas 71 percent of patients presenting before 7 days showed audiometric improvement. However, the patients who presented earlier showed more marked improvement. Speech discrimination with the W-22 word list was a predictor of early recovery. Patients with measurable speech discrimination scores on presentation uniformly improved with treatment, even if their pure-tone average was profound. Our findings were suggestive of a pathophysiologic mechanism for some cases of sensorineural hearing loss for which intravenous contrast is efficacious. Although our findings were far from conclusive in this uncontrolled study, these initial results support the use of these agents in a rigorous clinical trial.

Adolescent↗
PubMed1994

Fine-needle detection of cytomegalovirus parotitis in a patient with acquired immunodeficiency syndrome.

Parotid enlargement is common in patients infected with human immunodeficiency virus type 1. We present a case of cytomegalovirus infection of the parotid gland in a patient with the acquired immunodeficiency syndrome. This case is notable because fine-needle aspiration provided the diagnosis. We therefore present a quick and inexpensive method of detecting a potentially fatal infection that has previously been unrecognized by the medical community.

AIDS-Related Opportunistic Infections↗
PubMed1994

Topical antiseptic mouthwash in oncological surgery of the oral cavity and oropharynx.

A multivariant analysis of the value of the use of a pre-operative topical antiseptic mouthwash to reduce the incidence of post-operative wound complications in 106 consecutive patients undergoing head and neck surgery involving the oral cavity or oropharynx was carried out at the University of Iowa, Department of Otolaryngology--Head and Neck Surgery. An oral presentation employing povidone-iodine solution was used for 43 patients. The remaining 63 patients studied received no oral presentation. Unfavourable wound outcome was not associated with age, sex, presence and condition of teeth, or serious pre-existing medical illnesses. A significant correlation was found between post-operative wound breakdown and type of closure, stage of disease, and previous operation or radiotherapy. The use of an oral preparation correlated significantly with favourable wound outcome independent of all other variables (p < 0.01). Our data support the use of a topical antiseptic mouthwash to reduce the incidence of post-operative wound complications in surgery of the oral cavity and oropharynx.

Aged↗
PubMed1994

Indium 111-labeled white blood cell scintigraphy as an unreliable indicator of malignant external otitis resolution.

The field of otolaryngology-head and neck surgery has seen many advances in the treatment and prognosis of malignant external otitis (MEO). However, establishing the resolution of the infection remains problematic. A recent report suggests that indium 111-labeled white blood cell scintigraphy may be a reliable and timely indicator of resolution of infection. We present a case of a false-negative white blood cell scan in a patient with persistent MEO. A discussion of this case and a review of the literature illustrate that there continues to be no "gold standard" for establishing MEO resolution.

Aged↗
PubMed1994

Lingual abscess.

Explore the source record for details and available documents.

Abscess↗
PubMed1993

Mycosis fungoides involving the cervical esophagus.

Review of the otolaryngologic literature reveals no case reports of mycosis fungoides involving the esophagus. Post-mortem studies report 12 cases of esophageal involvement in 131 autopsies of patients with mycosis fungoides. We describe a 54-year-old man with mycosis fungoides involving the larynx, hypopharynx, and esophagus. Treatment consisted of radiation to this area, with resolution of the patient's hoarseness and dysphagia. The charts of 96 patients with mycosis fungoides treated at our institution were retrospectively reviewed. Three additional cases involving the aerodigestive tract, but not the esophagus, were found. Esophageal mycosis fungoides was an incidental finding in two of seven autopsies at our institution.

Esophageal Neoplasms↗
PubMed1993

Gustatory otorrhea: Frey's syndrome of the external auditory canal.

A case of Frey's syndrome of the external auditory canal is reported. The patient presented with unilateral gustatory otorrhea and thickened external auditory canal skin. Histopathologic examination of the canal skin showed sudomotor gland hyperplasia. Symptoms were relieved with canal skin excision and skin graft.

Adult↗
PubMed1993

Disappearing recurrent acoustic neuroma in an elderly woman.

Acoustic neuromas have been shown to grow more slowly, if at all, in the elderly. Reduction of tumor size has been rarely reported in intracranial masses thought to be acoustic neuromas. We present a biopsy-proven acoustic neuroma that involuted completely during a 4-year period of surveillance. Possible mechanisms of involution are discussed.

Age Factors↗
PubMed1993

Lightning injury of the tympanic membrane.

A number of cases of otologic injuries by lighting strikes have been described in the otolaryngological literature. The mechanism of these injuries remains uncertain. We report 3 cases of lightning injury that presented to us. Analysis of these cases suggests that the mechanism of injury is direct conduction of electricity from the scalp to the soft tissues of the external auditory canal to the tympanic membrane. The conduits of the electrical surge are the subcutaneous blood vessels, smaller vessels being damaged more than larger vessels. Since the tympanic membrane central vessels are smaller than the canal vessels, the central area of the tympanic membrane would be most vulnerable, and this is seen clinically. A review of the literature supports this proposed mechanism of injury.

Adult↗