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Biomedical subjects

Donald B Kearns

Publications and source records attributed to Donald B Kearns.

4 recordsLinked to original sources

Nasal dermoids.

PURPOSE OF REVIEW: Midline congenital nasal lesions are rare, occurring in one out of every 20,000-40,000 births. Of these midline lesions, nasal dermoids are the most common. This review centers on diagnosis of nasal dermoids, the role of imaging in diagnosis and surgical planning and the various approaches to surgical management of these lesions. RECENT FINDINGS: Multiplanar, high-resolution thin section magnetic resonance imaging allows for excellent soft tissue detail, particularly when intracranial extension is expected. Open rhinoplasty is favored by many authors for excision of dermoids. Transnasal endoscopic excision of nasal dermoids has been reported but is not recommended for dermoids extending into or beyond the falx cerebri. SUMMARY: Imaging of the midface and brain is essential for accurate diagnosis, assessment for any intracranial extension and appropriate surgical planning. Any surgical approach for removal of nasal dermoid cysts should permit adequate access, allow repair of the skull base and cerebrospinal fluid leak, facilitate nasal reconstruction and result in acceptable cosmesis. The head and neck surgeon should be able to consider various surgical approaches to manage these lesions.

Dermoid Cyst↗

Professional diversity and personal commitments of pediatric otolaryngologists.

OBJECTIVE: To characterize the time demands and practice patterns of pediatric otolaryngologists. DESIGN: Prospective survey of members from the American Society of Pediatric Otolaryngology. RESULTS: The survey response rate was 54% (n = 136) of practicing members of the American Society of Pediatric Otolaryngology. Respondents described being actively engaged in clinical otolaryngology (99%), hospital or practice administration (71%), private enterprise (17%), research (71%), and teaching (89%) on a weekly basis. Sixty percent considered their time demands to be "too busy"; however, few anticipated changing their activities in 5 years. Among the responding physicians, 90% believed that nonotolaryngology peers within their institutions viewed pediatric otolaryngology favorably whereas only 50% thought that other otolaryngologists held the same opinion. CONCLUSIONS: Pediatric otolaryngologists participate in many activities beyond clinical medicine. While most considered their time demands to be too busy, few anticipated a change in their activities. This may be reflective of a high level of job satisfaction, financial constraints, or the relative youth of the subspecialty.

Adult↗

Imaging and surgical approach of nasal dermoids.

OBJECTIVE: Determine the most accurate and cost effective radiographic evaluation for nasal dermoids. Determine the best surgical approach for excision of nasal dermoids. DESIGN: Retrospective chart review. SETTING: Division of Pediatric Otolaryngology, Children's Hospital and Health Center, San Diego, California. PARTICIPANTS: All patients with nasal dermoids evaluated and treated from 1990 to 2000. INTERVENTION: Preoperative radiographic evaluation and surgical excision. OUTCOME MEASURES: Accuracy of CT and MRI correlated with surgical findings and results. RESULTS: Ten patients were identified with the diagnosis of nasal dermoid. The age at diagnosis ranged from 0 to 24 months, with a mean of 3 months. Six children presented with masses located at the glabella, three patients presented with masses located at the nasal dorsum and one presented with a mass at the nasal tip. Six children underwent a computed tomogram with contrast of the head. Seven children underwent a MRI study of the head. Three children underwent an initial CT followed by MRI. Twenty percent of children were found to have intracranial extension. CT scan accurately diagnosed intracranial extension in one case, was indeterminate in a second case and falsely positive in a third case. MRI correctly diagnosed intracranial extension in two cases and had no false positive or false negative results. No children were found to have associated intracranial anomalies. In the early years of the review, a simple excision was made over the mass with blunt and sharp dissection for removal. (An external rhinoplasty incision is now used with better exposure and improved cosmetic results.) In cases with intracranial communication, a combined approach of external rhinoplasty and craniotomy was used. CONCLUSIONS: MRI alone is the most cost effective and accurate means of evaluating nasal dermoids and is essential for preoperative planning. The surgical approach of choice is external rhinoplasty for both cosmetic reasons and exposure of nasal dermoids with and without intracranial extension.

Child, Preschool↗