Browse Health
Otolaryngologist (ear, nose, throat)
14 years of experience
Accepting new patients

Education ?

Medical School Score
Rush Medical College (1996)
  • Currently 2 of 4 apples

Awards & Distinctions ?

American Academy of Otolaryngic Allergy
American Academy of Otolaryngology: Head and Neck Surgery
American Board of Otolaryngology
American College of Surgeons
American Rhinologic Society

Affiliations ?

Dr. Swanson is affiliated with 7 hospitals.

Hospital Affilations



  • Mercy Medical Center of Oshkosh Inc
    500 S Oakwood Rd, Oshkosh, WI 54904
    • Currently 4 of 4 crosses
    Top 25%
  • Calumet Medical Center
    614 Memorial Dr, Chilton, WI 53014
    • Currently 3 of 4 crosses
    Top 50%
  • Appleton Medical Center
    1818 N Meade St, Appleton, WI 54911
    • Currently 1 of 4 crosses
  • St Elizabeth Hospital
    1506 S Oneida St, Appleton, WI 54915
    • Currently 1 of 4 crosses
  • Appleton Medical Center & Theda Clark Medical Center
  • St Elizabeths Hospital, Appleton, Wi
  • Main Facility - Thedacare
  • Publications & Research

    Dr. Swanson has contributed to 13 publications.
    Title The Utility of Chest Radiography Following Percutaneous Dilational Tracheotomy.
    Date December 2002
    Journal Archives of Otolaryngology--head & Neck Surgery

    OBJECTIVE: To determine the need for routine chest radiography following percutaneous dilational tracheotomy (PDT). DESIGN: Retrospective chart review. SETTING: Tertiary care academic medical center. PATIENTS: The records of 119 patients undergoing PDT between 1993 and 2000 for indications of prolonged intubation or need for pulmonary toilet. All patients received a portable chest radiograph immediately following the procedure. OUTCOME MEASURE: Incidence of postoperative pneumothorax or pneumomediastinum. RESULTS: One patient (0.8%) undergoing PDT experienced a postoperative pnuemothorax. This patient was noted to have respiratory distress within 10 minutes following the procedure, suggesting a pneumothorax. A postoperative chest radiograph confirmed the clinical impression. No asymptomatic patients were diagnosed as having a pnuemothorax or pneumomediastinum using postoperative chest radiography. CONCLUSIONS: Chest radiography following PDT is indicated when there are clinical findings suggesting pneumothorax or pneumomediastinum. Without clinical signs or symptoms, routine use of postoperative chest radiographs are unnecessary and not cost-effective.

    Title Restricted Growth of Avirulent Avian Reovirus Strain 2177 in Macrophage Derived Hd11 Cells.
    Date January 2002
    Journal Virus Research

    The replication of two pathotypes of avian reovirus, 1733 and 2177 in transformed chicken lymphoid and myeloid cell lines was examined, showing that only the macrophage cell line, HD11, supports replication. The virulent strain 1733 causes a lytic infection producing 100-1000 fold more virus than the avirulent strain 2177. Cells infected with strain 2177 display delayed viral RNA and protein synthesis as well as a suppressed expression of the major capsid protein muB. These features may contribute to the lower virulence of the strain 2177 in their natural host in vivo.

    Title Taming the Fluorescent Tube for Biomedical Photography.
    Date October 1995
    Journal Journal of Biological Photography
    Title Descriptive and Experimental Analysis of the Epithelial Remodellings That Control Semicircular Canal Formation in the Developing Mouse Inner Ear.
    Date November 1993
    Journal Developmental Biology

    The inner ear of the mouse develops from a roughly spherical epithelial vesicle, the otocyst, which undergoes a series of complex shape changes to produce the functionally important parts of an adult inner ear; in particular, a coiled cochlea--which houses the auditory apparatus, a saccule and utricle containing sensors of gravity and linear acceleration, and three precisely shaped and oriented semicircular canals, with which angular acceleration is detected. This paper follows the development of the shape of the mouse inner ear from simple otocyst until a stage when the vesicle has become a rather squat miniature model of its adult self. We have been able to visualize clearly these complex shape changes by injecting an opaque marker into the lumina of a series of fixed ears. We have further concentrated on the mechanism of formation of the semicircular canals using light-, electron-microscopic, and dye-marking techniques. Classic embryological texts describe the canals developing from outpocketings of the epithelial ear rudiment, whose opposite walls meet, fuse, and "disappear" in the central canal plate region to leave a tube of epithelium encircling their margin. To trace the fate of these "disappearing" epithelial cells we have dye-marked all of the otic epithelial cells at a stage prior to canal formation in mouse embryos which we then grow in roller culture until their canals have formed. From these marking experiments we show that the disappearing cells of the canal plate neither die nor become transformed into mesenchymal cells, but rather, most are retracted back into the canal tube epithelium at either side of the site of fusion. We speculate that this mechanism of epithelial resorption may be a common way of "losing" epithelial cells during embryonic morphogenetic remodellings.

    Title Epithelial Autonomy in the Development of the Inner Ear of a Bird Embryo.
    Date March 1990
    Journal Developmental Biology

    The epithelium lining the inner ear contains a large number of differentiated cell types, arranged in precise patterns. Once the otocyst has closed, do the cells differentiate according to mechanisms intrinsic to the epithelium or are they dependent on external influences? In particular, are they governed by signals from the surrounding periotic mesenchyme? And is the closed structure of the inner ear or the otocyst fluid that it contains important for pattern formation and differentiation as it is for adult function? We have examined these questions by two types of grafting experiment. In the first, early (E3, stage 17-18, or E2, stage 13-14) undifferentiated quail otocysts were stripped of their mesenchyme and grafted into the wing buds of chick embryos. Although surrounded by a foreign mesenchyme the otic epithelium differentiated into the standard inner ear cell types. The gross morphology was abnormal, and the sensory hair cells were grouped into a few large patches instead of the usual eight smaller patches; locally, however, the spatial relationships between the differentiated cell types appeared normal. In the second experiment, open fragments of early undifferentiated otocyst (with some adhering mesenchyme) were grafted onto the surface of a limb bud. In this exposed in vivo situation, where the apical surface of the epithelium is bathed by amniotic fluid instead of otocyst fluid, differentiation proceeds normally also. Thus differentiation of inner ear epithelium at these stages does not require any specific influence from otic mesenchyme and proceeds independently of whether the otocyst is open or closed. Such epithelial autonomy creates special opportunities for in vitro analysis.

    Title Distribution of Expression of 2ar (osteopontin) in the Embryonic Mouse Inner Ear Revealed by in Situ Hybridisation.
    Date December 1989
    Journal Hearing Research

    Using in situ hybridisation we have determined the distribution of expression of 2ar (also known as osteopontin, bone sialoprotein 1 or 44-kDa bone phosphoprotein) in the developing mouse inner ear. We have identified several discrete sites, both osteogenic and non-osteogenic, that express 2ar from embryonic day 16.5 (E16.5). In addition to the regions of developing bone of the calvaria and temporal bone, we have found 2ar expression in the epithelium of the sensory maculae (but not in the organ of Corti), in the vestibular and auditory ganglia and nerves (but not in the nerves that innervate the whiskers in the snout), in the epithelium that lines the endolymphatic sac (but not in the neighbouring and contiguous endolymphatic duct) and also in the epithelium that lines the semicircular canals. We found also individual cells scattered throughout the brain, loose mesenchyme and blood vessels of the head that were expressing 2ar. Several of the sites in the inner ear, for example the maculae and the endolymphatic sac, are known to be involved in the production of calcified matrix. The results extend the range of tissue types known to express the protein and demonstrate that tissues of histologically similar appearance can nonetheless differ in their gene expression.

    Title Regeneration of Sensory Hair Cells in the Vertebrate Inner Ear.
    Date May 1989
    Journal Trends in Neurosciences
    Title Effects of Low Calcium and Inhibition of Calcium-activated Neutral Protease (canp) on Mature Nerve Terminal Structure in the Rat Sternocostalis Muscle.
    Date August 1987
    Journal Brain Research

    The possible role of calcium and a calcium-activated neutral protease (CANP) in the reorganisation of mature mammalian neuromuscular junctions was studied in the sternocostalis muscle in rats. After the well-documented loss of polyneuronal innervation has occurred, the remaining single mature nerve ending continues to change its terminal branching pattern by gradually becoming more complex. Reducing local calcium concentrations by the chelating agent BAPTA or inhibiting CANP by local application of an inhibitor, Leupeptin, resulted in the endings becoming more complex in appearance when examined after 6 or 7 days. It is concluded that calcium and CANP are important in the remodelling of mature neuromuscular junctions.

    Title Sensory Nerve Routes in Chick Wing Buds Deprived of Motor Innervation.
    Date February 1987
    Journal Journal of Embryology and Experimental Morphology

    To what extent do motor and sensory nerve fibres depend on one another for guidance during the development of peripheral nerve patterns? This question has been examined by looking at the paths taken by sensory nerve fibres growing into the embryonic chick wing in the absence of motor axons. The precursors of the motoneurones were destroyed by irradiating the appropriate part of the neural tube with a focused beam of ultraviolet light, before axons had grown out. The limb nerve patterns seen 5 to 7 days later revealed that sensory fibres followed the usual paths of main nerve trunks and formed cutaneous nerve branches in an almost normal way. However, the sensory fibres did not take the paths where muscle nerve branches are normally seen. Apparently, sensory axons for the most part do not depend on motor axons for guidance, except in the case of proprioceptive fibres, which require guidance from motor axons over the final steps of their path into muscle.

    Title Paths Taken Sensory Nerve Fibres in Aneural Chick Wing Buds.
    Date October 1985
    Journal Journal of Embryology and Experimental Morphology

    What constrains growing nerves to follow the paths they take during the development of peripheral nerve patterns? This paper examines two, related, topics concerning the pathways taken by sensory nerve fibres in the embryo chick wing: the constraints imposed on the nerves by limb tissues; and the timing of axon outgrowth. Sensory ganglia from 7-day-old chick embryos were grafted into younger host embryo wing buds which had been previously denervated. The resultant nerve patterns revealed that, first, nerve fibres could grow almost anywhere within the wing bud, with the exceptions of cartilage and a region just beneath the growing tip. Secondly, the younger the host wing bud at the time of grafting, the more likely the neurites were to form a thick fascicle which followed the limb's normal nerve pathways. The wing apparently does not impose a rigid restraint on nerves to grow only along certain routes; however, if a nerve fibre reaches a normal nerve pathway, it prefers to follow it.

    Title The Timetable of Innervation and Its Control in the Chick Wing Bud.
    Date March 1983
    Journal Journal of Embryology and Experimental Morphology

    How is the timing of nerve outgrowth controlled during development? This question has been examined by grafting early limb buds between chick embryos of different ages, before innervation, and assessing the morphological pattern of nerves at later stages. Grafted limbs continued to develop according to their own timetable and were invaded by nerves from the host. Irrespective of the age of the host, the development of the pattern of innervation followed the time course appropriate to the age of the grafted limb. Young nerves in an old limb showed accelerated development; old nerves in a young limb showed retarded development. The process of innervation is apparently governed not by the intrinsic developmental timetable of the neurons, but rather by the rate of construction of pathways for them in the peripheral tissue, and by the times at which their specific targets, such as muscles, differentiate.

    Title Developing Trends
    Journal Trends in Neurosciences
    Title Farewell
    Journal Trends in Neurosciences

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