Christopher Knutson

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An analysis of 100 patients sustaining multiple injury and pancreatic trauma was completed. Sixteen patients with penetrating injury died within the first 24 hours, 14 of whom died intraoperatively from major hepatic and/or retroperitoneal venous injury. Eighty-four patients survived long enough to permit evaluation of treatment. There was no statistically(More)
A record review focused on children and adolescents, with a history of traumatic brain injury (TBI), who were consecutively admitted to a brain injury clinic in which all new patients are psychiatrically evaluated. Correlates of post-injury oppositional defiant disorder/conduct disorder (ODD/CD) and post-injury attention deficit hyperactivity disorder (AHD)(More)
A record review focused on children and adolescents, with a history of traumatic brain injury, who were consecutively admitted to a brain injury clinic in which all new patients are psychiatrically evaluated. Significant correlates of severity of injury in the cognitive, education and communication domains of functioning included Performance IQ but not(More)
Supernumerary isochromosomes resulting in autosomal tetrasomy are rare and have been described only for 12p, 18p, and 9p. Nineteen previous cases of tetrasomy 9p have been reported, and in 6 cases, tissue-specific mosaicism was implied with the i(9p) cell line present exclusively or predominantly in blood. We report on an infant who had apparently normal(More)
Total colonoscopy is the procedure of choice for patients with any amount of rectal blood loss unexplained by proctosigmoidoscopy and barium contrast enema examinations. In 168 endoscopic examinations, 46 unsuspected lesions in 39 patients (23 percent) were detected, 50 percent of which were 1 cm or greater in diameter. Considering that 30 percent of all(More)
We have reviewed our experience with colonoscopy in the diagnosis of angiodysplastic lesions of the colon. In 14 of the patients in our series, the lesions in the colon were diagnosed colonoscopically, confirming arteriographic findings in many but being the only diagnostic modality facilitating the diagnosis in three of the patients. Results of our(More)
The role of colonoscopy in the evaluation of blood loss per rectum has been studied extensively in older patients but not in the younger adult population. The objective of this study was to review the diagnostic yield of colonoscopy in patients 40 years of age or younger with passage of minimal amounts of bright red blood per rectum or occult blood positive(More)
A program developed for the intraoperative judgement decisions commonly faced in cancer of the colon and rectum has been published and has been found to correlate frequently with the management carried out in a cancer hospital and on the ward services of university programs in city/county and Veterans Administration hospitals. Those patients whose(More)
The results of 662 therapeutic and diagnostic colonoscopic examinations were reviewed to assess the morbidity, clinical benefit, diagnostic accuracy, and indications for the procedure, with special emphasis on detection and endoscopic excision of small, occult, invasive cancers. Overall, the frequency of detecting occult lesions (19%), the (89%) ability to(More)