Danny A Morrison

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Hemangiopericytoma is a vascular neoplasm of variable and unpredictable malignancy, composed of proliferating capillary pericytes surrounding endothelial-lined tubes or sprouts. The histological appearance is diagnostic. The treatment of primary intracranial hemangiopericytoma is surgical excision, supplemented by radiotherapy. Local tumor recurrence after(More)
When trying to establish the likely anatomical site (preganglionic or postganglionic) of a lesion causing congenital Horner's syndrome, the distribution of facial flushing (the "harlequin" sign), may be seen. In babies and young children, facial flushing is a relatively simple clinical sign to demonstrate, compared with facial sweating. In unilateral facial(More)
PURPOSE Our goal was to determine the accuracy of MRI in the diagnosis of infraspinatus tendon injury and more specifically to determine if the antero-posterior extent of a rotator cuff tear is predictive of infraspinatus tearing. METHOD The MR images of 41 shoulders with surgically proven supraspinatus tears at surgery were retrospectively reviewed. The(More)
OBJECTIVE We evaluated the Ottawa knee rules in a high-volume teaching hospital in the United States to determine whether the rules could be safely used to decide whether patients with acute blunt knee trauma should undergo radiography. SUBJECTS AND METHODS During a 13-month period, 378 patients with acute blunt knee trauma were prospectively examined(More)
PURPOSE To investigate whether 173 patients with microphthalmia, anophthalmia, and coloboma have mutations in the eye-development gene SIX6. METHODS The two exons of the SIX6 gene were amplified by PCR from patients' genomic DNA and directly sequenced to search for mutations. The PCR products of 75 patients were also analyzed by denaturing(More)
This study investigates the effect of freezing and storage of tissue and subcellular fractions on the measurement of epidermal growth factor receptors (EGF-r); compares competition binding and single saturating dose assays (SSD) for quantitating EGF-r levels; investigates several tissues as potential quality control; and examines the relationship between(More)
Purpose (i) To describe the course of ocular symptoms and recurrent corneal erosion (RCE) following traumatic corneal abrasion (TCA). (ii) To assess the efficacy of a regimen of nightly eye ointment in preventing symptoms and RCE.Methods Patients presenting with TCA were treated with g. cyclopentolate 1% stat. and oc. chloramphenicol q.d.s. for 5 days. Eye(More)
translocation We present a case of keratoconus with a balanced chromosome translocation between chromosomes 7 and 1 1 . The keratoconus is demonstrated with corneal topography. Chromosomal rearrangements should be considered in cases of keratoconus presenting in childhood. Keratoconus is an ectatic corneal disorder with a prevalence of about 50 in 100 000.(More)
EDITOR,—I read with interest the article published in the BJO by Hunt. In this paper the author reports that the prevalence of APC resistance is more common than any other known thrombophilic state and was present in over one third of patients younger than 45 years with central retinal vein occlusion (CRVO). Therefore, many would argue that a full(More)