It has been clarified that myoepithelial cells contain S-100 protein which is known to be a marker protein of neural tissue. To evaluate the participation of myoepithelial cells in the histogenesis of the salivary gland tumors, normal salivary glands and various salivary gland tumors were stained by immuno-peroxidase method. PAP kits (DAKO Co, USA) for the S-100 protein and the Cytokeratin were used and the following resulting were obtained. Acinic cells of the normal salivery gland were negative for both cytokeratin and S-100 protein. The intercalated duct cells were weakly positive for cytokeratin and S-100 protein. The normal myoepithelial cells scattered around the acini and the intercalated ducts were positive only S-100 protein. In contrast, the striated duct were positive only for cytokeratin. In plemorphic adenoma, the S-100 protein positive cells were found in solid sheets of tumor cells, in chondromyxoid areas and in areas of spindle-cell stroma as well as in the outer layer of the tubular structures. Only the inner lining of the tubules were positive for cytokeratin. In basal cell adenoma, the stromal spindle cells were strongly positive for S-100 protein and the epithelial cells weakly positive. When tubules were present within the epithelial sheets, the inner most lining cells were positive for cytokeratin. The peripheral palisaded tumor cells were negative for both substances. By immunostaining of the adenoid cystic carcinoma, S-100 protein containing cells were found focally scattered independently on the variety of histologies. The lining cells of true cystic structure were positive for cytokeratin. Immunostaining of the mucoepidermoid carcinoma demostrated that the squamous cells and the tubular epithelial cells contained cytokeraitn, whereas only a few intermediate cells were positive for S-100 protein. In Warthin's tumor there were no S-100 protein positive cells, although basally located epithelial cells of the papillae were positive for cytokeratin. These findings suggest that salivary gland tumors other than the Warthin's tumor arise from myoepithelial cells or reserve cells having dual potentiality differentating into myoepithelial and intercalcated duct cells.

At "Keumjung-gul" site, bones of more than 153 persons are excavated in October 1995. They were interred in Autumn of 1950 during Korean War. Among them, 70 skulls were examined in morphological method and DNA test for sex determination. With PCR amplification of amelogenin, 60 skulls were proved male, 9; female, 1; not amplified. Result with Y27H39LR, SRY and alphoid repeats were not satisfactory. The morphologic determination for sex were made maily by (1) prominence of the supercilliary arch, (2) prominence of the external occipital protuberance and crest, (3) size and shape of the mastoid process. The concurrence rate between two examiner, and between two morphologic result and DNA result were low (<70%), largely because of the subjectivity of morphologic trait and the paucity of experiences.
Amelogenin ; DNA* ; Female ; Humans ; Korean War ; Male ; Mastoid ; Polymerase Chain Reaction ; Skull*

No abstract available.
Peptic Ulcer* ; Retrospective Studies*

No abstract available.
Diagnosis* ; Ossification, Heterotopic* ; Risk Factors* ; Spinal Cord Injuries* ; Spinal Cord*

Traumatic intracranial lesion has been one of the most frequent and serous problem in neurosurgical pathology. CT made it possible to get prompt diagnosis and surgical intervention of intracranial lesions by its safety, fastiness and accuracy. Computed tomographic scan was carried out on 1309 cases at Soonchunhyang Chunan Hospitalfor 15 months from Oct. 1983 to Dec. 1984. We have reviewed the computed tomographic scans of 264 patients whichshowed traumatic intracranial lesion. The results were as follows: 1. Head trauma was the most frequentlydiagnosed disase using computed tomographic scans(57.8%), and among 264 cases the most frequent mode of injury wastraffic accident (73.9%). 2. Skull fracture was accompained in frequency of 69.7% and it was detected in CT in38.6%: depression fractue was more easily detected in 81%. 3. Countercoup lesion(9.5%) was usually accompained with temporal and occipital fracture, and it appeared in lower incidence among pediatric group. 4. Intracranial lesions of all 264 cases were generalized cerebral swelling(24.6%), subdural hematoma(22.3%), epiduralhematoma(20.8%), intracerebral hematoma(6.1%), and subarachnoid hemorrhage(3.0%). 5. The shape of hematoma wasusually biconvex(92.7%) in acute epidural hematoma and cresentic(100%) in acute subdural hematoma, but the morechronic the cases became, they showed planoconvex and biconvex shapes. 6. Extra-axial hematoma was getting decreased in density as time gone by. 7. Hematoma density was not in direct proportion to serum hemoglobin levelas single factor.
Chungcheongnam-do ; Craniocerebral Trauma ; Depression ; Diagnosis ; Hematoma ; Hematoma, Subdural, Acute ; Humans ; Incidence ; Pathology ; Skull Fractures

No abstract available.
Anemia, Aplastic* ; Leukemia, Myeloid, Acute*

No abstract available.
Aged* ; Humans ; Korea*

Although methotrexate(MTX) has been known to have many side effects, especially toxicity on the hemopoietic cells and the liver, it has been used as a potent anticancer drug and for the treatment of psoriasis or rheumatoid arthritis. The severity of hepatotoxicity varies from mild fatty change to chronic active hepatitis(CAH) and cirrhosis. We experienced two cases of MTXinduced CAH in patients with psoriasis, which prompted us to report in view of the absence of biopsy proven MTX hepatotoxicity in the Korean literature. Microscopically, the liver showed a distorted lobular architecture with portal fibrous expansion, piecemeal necrosis and bridging necrosis/fibrosis. The hepatic lobules revealed fatty changes of hepatocyte, focal hepatocytolysis, delicate collagen deposits along the space of Disse and the characteristically marked polyploid nuclear change of hepatocytes.
Biopsy

No abstract available.
Trichothiodystrophy Syndromes*

Hepatic changes in eight cases of systemic lupus erythematosus(SLE), were studied to evaluate the nature of hepatic injury of SLE and its relation to lupoid hepatitis. Common histologic changes of the liver in SLE included intralobular necro-inflammatory activities, fatty change, canalicular bile stasis and mild perivenular and Disse space fibrosis. The fatty change and intralobular fibrosis were thought not to be due to SLE itself but associated with steroid administration or chronic alcoholic consumption. The necro-inflammatory changes were usually mild and features of chronic active hepatitis with periportal destruction occured in one case. Symptoms related to the involvement of many other organs than the liver appeared much frequently in patients with SLE than lupoid hepatitis, suggesting that the SLE involving liver and the lupoid hepatitis are different diseases.