RESUMEN
BACKGROUND: Massive ovarian edema is a tumorlike condition in which there is marked enlargement of one or both ovaries due to accumulation of edema fluid in the stroma. It is speculated to occur as a result of partial ovarian torsion. CASE: Massive ovarian edema occurred in a postmenopausal woman. CONCLUSION: Massive ovarian edema is a rare cause of an adnexal mass. Knowledge of its existence is important to prevent incorrect treatment. We present the first case occurring in a menopausal woman.
Asunto(s)
Edema/diagnóstico , Menopausia/fisiología , Enfermedades del Ovario/diagnóstico , Edema/patología , Edema/fisiopatología , Femenino , Humanos , Incidencia , Persona de Mediana Edad , Enfermedades del Ovario/patología , Enfermedades del Ovario/fisiopatología , Ovario/fisiologíaRESUMEN
This study examined the effect of optic tract ablation on retinotectal fiber regeneration in goldfish. Approximately two-thirds of the left optic tract was removed, and, at various times post lesion (10-75 days), the course of regenerating retinotectal fibers was traced using horseradish peroxidase. In all experimental animals, axons were observed regenerating through the visual pathway but at the brachia most of the fibers were channeled through the ventral brachium. We present evidence that fibers in the ventral brachium originated from ganglion cells in all regions of retina and that these fibers grew almost exclusively into ventral half tectum even though some of these fibers would normally synapse in dorsal half tectum. These observations suggest that optic tract ablation does not prevent retinal fiber regeneration but results in aberrant growth through the brachia and significant inhibition of exploratory fiber growth within the tectum.
Asunto(s)
Regeneración Nerviosa , Nervio Óptico/fisiología , Retina/inervación , Colículos Superiores/fisiología , Animales , Transporte Axonal , Carpa Dorada , Peroxidasa de Rábano Silvestre , Área Preóptica/citología , Área Preóptica/fisiología , Colículos Superiores/citologíaRESUMEN
In this study, large areas of goldfish telencephalon were ablated including rostral nucleus preopticus periventriculare (rNPP), and degenerating axons were traced by a modified Fink and Heimer procedure. The lesioning procedure ablated large regions of area dorsalis telencephali pars medialis, centralis, and dorsolateral complex; and completely removed area ventralis telencephali pars dorsalis, ventralis, and lateralis. In addition, the supracommissural nucleus and rNPP were lesioned specifically because both nuclei have been thought to be involved in courtship behavior and endocrine control of reproduction. This investigation demonstrated extensive fiber projections from telencephalic nuclei and/or rNPP to the hypothalamus. Lesioned telencephalon and/or rNPP projected bilaterally to nucleus preopticus and the suprachiasmatic nucleus and unilaterally to the following tuberal nuclei: nucleus anterior tuberis, and the lateral hypothalamic nucleus. A much larger fiber projection to the inferior lobe nuclei was also observed with a large contralateral as well as ipsilateral input.