Travel distance: Impact on stage of presentation and treatment choices in head and neck cancer.

OBJECTIVES: The objective was to examine the impact of travel distance on stage of presentation and treatment choices in head and neck squamous cell carcinoma in the rural setting. METHODS: 6029 cases diagnosed from 2002 to 2011 were obtained from the state cancer registry. Travel time was calculated to the nearest academic medical centers, otolaryngologist, and radiation treatment facilities. Multivariate logistic regression was used to examine the association of travel time with stage of presentation as well as the likelihood of appropriate therapy after adjustment for other demographic variables. RESULTS: Patients in the highest quartile for travel distance to academic centers were 33% more likely to present with early stage disease (p = 0.02), and 42% more likely to receive appropriate surgical therapy for oral cavity cancer. Patients were 70% more likely to receive appropriate surgery if they were farthest from the nearest radiation center (p = 0.03). Proximity to otolaryngology care was not significant. CONCLUSION: Increased travel distance to academic medical centers is associated with increased likelihood of proper therapy for surgically treated tumors of the head and neck. Impact on these findings on improvements in access to care is discussed.

A new paradigm for staging pedicle screw-based spinal procedures: rationale, feasibility, safety, and efficacy.

OBJECT: The aims of this study were to present the rationale for and the evolution of a staged, two-procedure paradigm for spinal surgery requiring pedicle screw instrumentation, and to evaluate the feasibility, safety, and efficacy of the technique. METHODS: The rationale for the new algorithm is presented for consideration in the form of unproven hypotheses subject to verification by subsequent studies. The first stage of the two-staged algorithm, performed in an interventional radiology (IR) setting, involves percutaneous placement of either headless pedicle screws or K-wire fragment placeholders of the trajectory for pedicle screws. The second stage, performed days or weeks later, involves open surgical completion of instrumentation placement and other surgical objectives. The techniques for IR percutaneous K-wire fragment and percutaneous screw placement evolved over the duration of the study. Instrumentation was placed in 126 pedicles in 25 patients. Efficacy was equated to the accuracy of screw placement, which was evaluated using computed tomography (CT). Algorithms incorporating correction for metal artifact were developed to determine deviation of the screws and K-wire fragments from proper position. Over 1500 measurements were made to evaluate K-wire fragment and screw position in the 116 instrumented pedicles for which CT data were available. RESULTS: Accuracy of placement (relative to both cortical and pedicle breaches or to only pedicle breaches) was 98 to 100% for K-wire fragments, 96 to 98% for screws following K-wire fragments, and 100% for percutaneous screws. The only adverse consequence of pedicle screw placement by this method was one infection that occurred 8 months postoperatively. CONCLUSIONS: The staged, two-procedure paradigm for pedicle screw placement proved, within the limits of this study, to be feasible, safe, and effective; therefore, the unproven rationale behind the new paradigm merits further evaluation in a larger cohort of patients with randomized, matched controls.