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W J Kay

Publications and source records attributed to W J Kay.

14 recordsLinked to original sources
PubMed1986

Intracranial meningioma: a comparative pathologic study of 28 dogs.

Intracranial meningiomas were identified in 28 dogs based on histologic examination of tissue. The average age of the dogs was 11 years, and 83% (20/24) were 10 years old or older. German shepherd and mixed breed were most common (31% each, 8/26). Grossly, meningiomas were oval, dome-shaped and flattened masses adherent to the dura and compressing the brain. Forty-eight percent (15/26) of the tumors affected the dorsal surface of the brain, and two thirds of these were located in the anterior half. Histologically, tumor types were transitional (13), meningotheliomatous (11), angioblastic (three), and fibroblastic (one). There was direct invasion of the brain in 27% (6/22) although we observed neurologic signs and pathologic changes in 88% (23/26) and 90% (18/20) of the dogs, respectively. Intracranial meningioma can be compared and contrasted with this tumor in man and cats.

Animals↗
PubMed1975

Primary tumors of the spinal cord and meninges in six dogs.

Primary spinal cord tumors were detected in 6 mature dogs. Two of the tumors were astrocytomas, 2 were meningiomas, and 2 were neurilemmomas. Five tumors were in the cervical portion and 1 was in the lumbar portion of the spinal cord.

Animals↗
PubMed1975

Calcifying aponeurotic fibroma in a dog.

A calcifying aponeurotic fibroma involving the soft tissue and bone of the occipital area compressed and attenuated the cerebellum and brainstem of a 9-year-old female dog of mixed breeding. Clinical signs included a head tilt to the left; gait ataxia; anisocoria, with a midly dilated left pupil; horizontal nystagmus, with the fast phase to the right; and a mild depression of the level of consciousness. The signs were sequential and progressive.

Animals↗
PubMed1971

Spontaneous canine hydrocephalus: cerebrospinal fluid dynamics.

Cerebrospinal fluid dynamics were studied in 14 dogs with spontaneous hydrocephalus. In nine of the dogs aqueductal obstruction was observed and the remainder had a `communicating type' hydrocephalus. The major histological findings consisted of severe ependymal destruction, spongy changes in the periventricular white matter, increased density of capillaries in this area, and varying degrees of thickening, fibrosis, and fusion of the choroid villi. The formation and absorption of CSF were studied by perfusion of the cerebral ventricles. The rate of formation of CSF was found to decrease with perfusion pressure by V(f) = 0·02595-0·00022 P ml./min (P = pressure in cm H(2)O). The absorption of spinal fluid was found to increase linearly with pressure by V(a) = 0·0165 + 0·00050 P. The various factors influencing the formation and absorption of the spinal fluid are discussed. The meaning and attainment of `arrest' of the hydrocephalic process in terms of the measured rates of CSF formation and absorption in these animals are considered.

Animals↗
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