R. D. Strand

Learn More
BACKGROUND Deep hypothermia with either total circulatory arrest or low-flow cardiopulmonary bypass is used to support vital organs during heart surgery in infants. We compared the developmental and neurologic sequelae of these two strategies one year after surgery. METHODS Infants with D-transposition of the great arteries who underwent an(More)
Clinical and cellular differences between hemangiomas and vascular malformations in children have been defined. Hemangiomas are benign endothelial cell neoplasms that appear in infancy and usually have a natural history of proliferation and involution. Vascular malformations are errors of vascular morphogenesis that are present at birth, grow with the(More)
A case of villous hypertrophy or bilateral papilloma of the choroid plexus of the lateral ventricles is reported. The child exhibited known features associated with overproduction of cerebrospinal fluid, hydrocephalus that was difficult to control, ascites after ventriculoperitoneal shunting, and relief after surgical removal of the papillomatous tissue. A(More)
Twenty-six cases of developmental retrocerebellar cyst (RCC) formation are studied with respect to determining the usefulness and anatomic relevance of separate terms currently in use, including Dandy-Walker complex, Dandy-Walker malformation, Dandy-Walker variant, mega-cisterna magna (MCM), and Blake's pouch cyst. An anatomic and embryological continuum(More)
The world's surgical experience on the division of craniopagi is reviewed, and a new case is reported. The problems, including ethical considerations, that must be addressed in selecting patients for operation and in preparing for the procedure are discussed in detail. Hemodynamic stability and the problem of intraoperative gravitational distortion of the(More)
Caudal herniation of the hindbrain, indistinguishable from the Chiari I deformity, may occur after the establishment of spinal subarachnoid shunts and become symptomatic years after the procedure. Examples are presented and others are cited from the literature. It is proposed that the force responsible for the displacement is the difference in pressure(More)
Radiation therapy (XRT) was used in the treatment of 25 patients with tumors of the pineal and suprasellar locations. A tissue diagnosis was obtained before XRT in 5 patients, and 20 were irradiated without histologic verification. The overall survival rate is 80% (76% with no evidence of disease [NED]). Megavoltage XRT was delivered to the entire neuraxis(More)
The nitrogen fixing root nodules ofCeanothus integerrimus were very similar in appearance to other non-legume nodules. Each nodule was a cluster of small lobes. Each lobe in cross section had a central vascular cylinder and a hypertrophied cortex. The cortex contained very large infected cells, with large nuclei; among these infected cells were scattered(More)