Congenital Cytomegalic Inclusion Disease combined with Hydrocephalus: A case report

This is an autopsy-verifed case of the generalized cytomegalic inclusion disease occuring in a male fetus of a weeks gestation. The fetus revealed hydrocephalus and focal necrosis of brain, focal subcapsular necrosis of liver, and the typical cytomegalic inclusion cells having large acidophilic intranuclear inclusions in the liver, brain, kidney, lung, adrenal gland, pancreas and chorionic villi. Prominent extramedullary hematopoiesis was noted in the liver and kidney. Immuohistochemical staining using anti-cytomegalovirus antibody revealed intranuclear or occasionally intracytoplasmic immunoreactivity in brain, liver, pancreas, lung, kidney, and intestine.

Congenital Cytomegalic Inclusion Disease combined with Hydrocephalus: A case report

This is an autopsy-verifed case of the generalized cytomegalic inclusion disease occuring in a male fetus of a weeks gestation. The fetus revealed hydrocephalus and focal necrosis of brain, focal subcapsular necrosis of liver, and the typical cytomegalic inclusion cells having large acidophilic intranuclear inclusions in the liver, brain, kidney, lung, adrenal gland, pancreas and chorionic villi. Prominent extramedullary hematopoiesis was noted in the liver and kidney. Immuohistochemical staining using anti-cytomegalovirus antibody revealed intranuclear or occasionally intracytoplasmic immunoreactivity in brain, liver, pancreas, lung, kidney, and intestine.

Overexpression of Mutant p53 in Human Anaplastic Astrocytoma and Glioblastoma Multiforme

A total of 30 cases of cerebral gliomas, including 6 cases of low grade astrocytomas, 6 anaplasticastrocytoomas and l8 glioblastomas multiforme, was examined immunohistochemically to demonstrate the overexpression of mutant forms of p53 protein and to evaluate their relationships with histological subtypes. A p53 monoclonal antibody was applied to the routine formalin fixed, paraffin-embedded tissues for this study using microwave-assisted avidin-biotin method. Overexpression of p53 protein was identified in 4 out of 6 anaplastic astrocytomas (66.7%) and in l3 out of l8 glioblastomas multiforme (72.2%). No immunohistochemical positivity of p53 was found in adjacent normal brain tissue, gliosis and 6 cases of astrocytoma. These results suggest that overexpression of mutant p53 may be an important step in the development and progression of malignant astrocytoma, especially of the aggressive subtypes of glioma, including glioblastoma multiforme.

Fine needle aspiration cytology of endodermal sinus tumor of the mediastinum / 대한세포병리학회지

No abstract available.

Ultrastructural Study of Alcohol-Induced Gastric Mucosal Change of Rat

In an attempt ultrastructural study of alcohol-induced gastric mucosal change, we selected sixty Sprague-Dawley rats. The rats were administrated with 4 ml of 10% and 40% ethanol enterically and examined by light and electron microscopy. Light microscopically, the thickness of the mucus layer of both 10% and 40% ethanol groups was decreased. The antral mucosa revealed focal inflammatory infiltrates, disturbed glandular arrangements, and significant decrease of mucosal thichness and proper glands. On scanning electron microscopy, flattened or swollen mucosal epithelium and irregularly distributed gastric pits were seen in both experimental groups, and these changes were more severe in the groups of higher concentration and longer duration. On transmission electron microscopy, mitochondrial abnormalities with myelin-like materials and dilatation of endoplasmic reticulum and cytoplasmic blebs were observed. Also the mucus cells show significantly decreased mucus globules, increased fat vacuoles, and large autophagic vacuoles. These alterations were similar to those produced by ethanol in the liver and small intestine. This study indicates that, prolonged administration of ethanol induced chronic gastritis, especially chronic atrophic gastritis.

Capillary Plexus and Vasa of the Rat Lung as Revealed by Scanning Electron Microscope of Corrosion Casts

The pulmonary microvasculatures of rats were studied by injection replicas prepared from Mercox. This medium enabled us to easily obtain consistent, stable, and complete injected replicas of the pulmonary vasculature. In order to investigate the three dimensional structures of the tributaries of the bronchial artery, such as the capillary plexus and vasa vasorum, we performed a scanning electron microscopic(SEM) study of the vascular casts, using Mercox CL-2B as a media. The alveolar capillaries revealed hexagonal or pentagonal rings of vascular networks. In some areas, the vascular rings composed a square network, The bronchial tree was supplied by the bronchial arteries which form a coarse capillary extending as far as the terminal bronchioles. Occasionally the capillary plexus was connected with adjacent capillary networks in and around the alveolar walls. The walls of the pulmonary artery revealed only a single layer of the vasa vasorum, but those of the pulmonary vein were surrounded by more complicated and well developed vasa vasorum than the pulmonary arterial side. The mean diameters of the venous vasa vasorum are greater than the arterial vasa vasorum.