Darell D Davidson

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Background: The aim of this study was to compare abdominal fine-needle aspirations (FNAs) performed with large (≥20-gauge) or small (≤21-gauge) needles for diagnostic rate, number of samples required for diagnosis, diagnostic accuracy, and complication rates. Methods: Abdominal and pelvic FNA procedures were retrospectively reviewed. Needle size, imaging(More)
Accurate assessment of uterine size and significance of uterine enlargement are common clinical problems. We examined 156 patients by sonography prior to scheduled hysterectomy. Uterine volumes from normal-sized uteri were calculated from the sonograms using the equation of a prolate ellipsoid formula, and these calculated volumes were highly correlated(More)
"Popcorn" calcifications appear roentgenographically as a collection of scalloped radiolucencies, each with a sclerotic margin and in some instances, with central densities. The radiographs of 46 children with osteogenesis imperfecta were reviewed retrospectively; 52% had "popcorn" calcifications at one or more sites. A study of these children indicated(More)
PURPOSE To test the effect of temporary caval filtration on pulmonary emboli when a mechanical thrombolytic device is used to treat venous thrombosis and to test the effects of a modified device on caval patency at 30-day follow-up. MATERIALS AND METHODS In a canine model of iliocaval subacute thrombosis, mechanical thrombolysis was performed with use of(More)
PURPOSE To determine the volume and composition of clot within thrombosed hemodialysis access grafts. MATERIALS AND METHODS Clots were collected in 22 patients at surgical thrombectomy of polytetrafluoroethylene grafts. Histologic analysis was performed in 10 of these clots plus 21 randomly selected clots from the pathology archives. RESULTS A small,(More)
In a recent 2-year period, 89 fine-needle aspiration biopsies (FNAB) were performed on head and neck lesions in 81 patients from 6 to 97 years of age. Eighty-four of the FNABs were considered diagnostic. Thirty of the aspirates were diagnosed as benign whereas 54 were diagnosed as malignant. Three specimens were suspicious for malignancy, and 2 specimens(More)
PURPOSE To test the safety and efficacy of using the Arrow-Trerotola percutaneous thrombolytic device (PTD) for treating deep vein thrombosis (DVT) in an animal model. MATERIALS AND METHODS An established canine model of iliocaval subacute thrombosis was used. Thrombosis was caused by balloon occlusion of the infrarenal inferior vena cava (IVC) for 7 (n =(More)
Fine-needle aspiration biopsy is a technique that is gaining great popularity in both surgical and nonsurgical specialties. Its accuracy, safety, and usefulness have been demonstrated repeatedly; however, its usefulness seems to have been overlooked by oral and maxillofacial surgeons. This technique has many advantages in the diagnosis of mass lesions,(More)
Clinically, the two most prominent features of osteogenesis imperfecta are dwarfing and bone fragility. Radiologic examination reveals severe osteopenia with or without multiple deformities. Histological examination of samples obtained from 16 iliac crest biopsies compared with 21 age-matched controls revealed a significantly diminished amount of bone(More)
PURPOSE To determine if the Arrow-Trerotola Percutaneous Thrombolytic Device (PTD) causes damage to normal vein valves. MATERIALS AND METHODS Ten lateral saphenous veins in five dogs were studied with descending venography with use of a wedge balloon catheter positioned above 48 valves (demonstrating 51 valves) before and after five antegrade passes each(More)