No abstract available.
Chest Pain* ; Thorax*

No abstract available.
Cardiovascular System*

No abstract available.
Cardiovascular System*

No abstract available.
Humans ; Male*

No abstract available.
Humans ; Male* ; Osteoporosis*

No abstract available.
Urinary Incontinence*

The morphologic development of the liver in the embryonic period is described in serial sections of 18 human embryos representative of Horizons 12 to 23 . In the earliest specimen of horizon 12, the liver is seen as branching cord of endodermal cells originating from the hepatic diverticulum and invading into the loose stroma of septum transversum, transforming the surrounding stromal cells into primitive blood spaces and blood cells. Thereafter, the parenchymal cells rapidly proliferated so that the size of the organ was reaching a fifth of the CR length in horizon 23. The vascular system of the liver was in a symmetric configuration in horizon 12, which is composed of umbilical and vitelline veins and hepatocardiac channels on both sides. The evolution of the vascular system includes intergration of the vitelline veins into the portal vein, obliteration of the right umbilical vein and left hepatocardiac channel, and creation of the ductus venosus. The intrahepatic biliary tract is found to be formed by the "in situ transformation" mechanism, which involves transformation of the parenchymal cells, adjacent to the fibrous tissue surrounding the portal and umbilical veins, to networks of cuboidal epithelial cells lining the ductal lumen. These intrahepatic duct systems were found to communicate with the extrahepatic system at the porta hepatis.
Humans

Pleomorphic xanthoastrocytoma is a rare tumor, presenting superficially over the cerebral hemispheres of young subjects. We report a case of Pleomorphic xanthoastrocytoma of the cervical cord in view of its unusual location. The patient is a 20-year-old female, presenting with left neck pain radiating to the left shoulder one month before the admission. Magnetic resonance imaging revealed a high signal lesion in the upper cervical cord lower brainstem in T2 weighted image. On operation, intramedullary tumor was present and it was relatively well delineated. Near-total removal of the spinal cord mass was done. Microscopically, the tumor was composed of pleomorphic astrocytes, which were spindle-shaped with cytoplasmic processes and hyperchromatic nuclei. Other cells were round with vesicular nuclei and abundant eosinophilic cytoplasm. A few giant cells were seen. Despite the marked pleomorphism, mitosis or necrosis was not encountered. Scattered foamy cells were also seen, which showed negative staining in GFAP immunostaining in contrast to other GFAP-positive tumors cells.
Female ; Humans

The intestinal nematode Enterobius vermicularis is the most common metazoan endoparasite in humans, with humans being the only host. But complicated perianal granulomas due to Enterobius are unusual. The literature reports only 13 previous cases of enterobiasis presenting as perianal mass or abscess. We describe an additional case of a perianal mass caused by granulomatous inflammation containing Enterobius vermicularis eggs and dead bodies in a 7-year-old boy. The lesion was located in the anus and measured 2 1 cm. Clinical impression was lipoma and excisional biopsy was done. Microscopic examination revealed necrotizing granuloma which contained several 50~60 20~30 micrometer sized eggs which were identified as those of Enterobius vermicularis. The adult worm could not be identified with clarity due to necrosis.
Abscess ; Adult ; Anal Canal ; Biopsy ; Child ; Eggs ; Enterobiasis ; Enterobius* ; Female* ; Granuloma* ; Humans ; Inflammation ; Lipoma ; Male ; Necrosis ; Ovum

Localized constriction and torsion of the umbilical cord are rare cord abnormalities. The seg- mental absence of Whartion's jelly in the involved area of the cord is believed to be an etiologic factor of the constriction and subsequent torsion. In the past, constriction and torsion were thought to occur after the death of the fetus as a result of maceration. However, recently it has been suggested that the torsion of the constricted area might cause fetal death. We report an autopsy case of a localized constriction and torsion of the umbilical cord in a stillborn baby. The baby was delivered to a 27-year-old primiparous woman after 28 weeks gestation. The fetus was of 24 gestational weeks in size and weight. And the placenta weight was 259 gm. A grossly macerated fetus showed a cystic hygroma in the posterior neck. There were two areas of constriction in the umbilical cord, one at the squamoamniotic junction and the other, 15 cm from the fetal end. Torsions were noted in both constricted areas, more severe than in the mid portion of the cord. Microscopically, the Whartion's jelly was deficient and partly replaced by fibrosis in the constricted areas. It is believed that these two areas of constrictions and torsion are causally related to the intrauterine fetal death in this case.
Female ; Humans