No abstract available.
Ammonium Compounds* ; Ammonium Sulfate* ; Animals ; Bromodeoxyuridine* ; CHO Cells* ; Chromosome Aberrations* ; Cricetinae ; Humans ; Siblings* ; Sister Chromatid Exchange*

Squamous cell carcinoma from the draining sinus of chronic osteomylitis has been recognized as a rare complication. The incidence of this complication is between 0.23% and 1.6% in cases of osteomyelitis. The cause of development of carcinoma at the site of chronic osteomyelitis is not well understood. This is a disease of middle aged men, and tibia is the most common site. Biopsy of squamous cell carcinoma which arises in the proliferating edge of the cutaneous ulcer and invades the bone, should include tissues from all sites of ulcer and bone marrow spaces. Histological diagnosis may be difficult because of preexisting metaplasia and pseudoepitheliomatous hyperplasia. Amputation at the adequate level is the treatment of choice. Four cases of squamous cell carcinoma involving tibia, metatarsal bone or calcaneus are reported with review of literatures.
Amputation ; Biopsy ; Bone Marrow ; Calcaneus ; Carcinoma, Squamous Cell ; Diagnosis ; Epithelial Cells ; Humans ; Hyperplasia ; Incidence ; Male ; Metaplasia ; Metatarsal Bones ; Middle Aged ; Osteomyelitis ; Tibia ; Ulcer

Human uniparental gestations such as androgenetic hydatidiform moles provide a model to evaluate the integrity of parent-specific gene expression,-i.e, genomic imprinting,- in the absence of a complementary parental genetic contribution. Several imprinted genes are characterized so far including the insulin-like growth factor-2 gene (IGF2) coding for a fetal growth factor and the Hl9 gene whose normal function is unknown but which is likely to act as an untranslated mRNA for its tumor-suppressing function. IGF2 is expressed exclusively from the paternal allele while Hl9 from the maternal allele. Such an alternate expression is quite interesting because both Hl9 and IGF2 genes are located close to each other on chromosome 11p15.5. An in situ hybridization analysis has shown strong expression of Hl9 and IGF2 alleles in nine hydatidiform moles. Especially, a prominent expression of Hl9 and IGF2 was detected in cytotrophoblast and the cellular localization was almost paralleled in Hl9 and IGF2 transcripts . Hl9 and IGF2 genes could be expressed either biallelically or monoallelically in the moles. However, IGF2 biallelic expression did not affect allele-specificity of Hl9 expression.. These results suggest that both H19 and IGF2 transcripts are expressed in the same cells and that the functional imprinting of H19 and IGF2 genes in hydatidiform moles can be controlled individually and independently of each other.
Alleles ; Chromosome Aberrations* ; Clinical Coding ; Female ; Fetal Development ; Genomic Imprinting* ; Humans* ; Hydatidiform Mole* ; In Situ Hybridization ; Insulin-Like Growth Factor II* ; Parents ; Pregnancy ; RNA, Messenger ; Trophoblasts

No abstract available.
Paragonimiasis*

PURPOSE: To evaluate the radiologic characteristics of axillary lymph nodes which are found on mediolateral oblique(MLO) view of mammography and to assess their clinical significance. MATERIALS AND METHODS: We retrospectively evaluated 119 cases axillary lymph nodes on MLO view of 410 cases of mammography in 205 patients regarding the size, bilaterality, number, grade of density, presence of central lucency, calcification of lymph nodes and presence of associated parenchymal pathologic lesions in breast. RESULTS: Axillary lymph nodes on MLO view were demonstrated in 119 (29%) among 410 cases. Axillary lymph nodes(112 cases) in cases without breast parenchymal lesions or with benign breast lesions showed; unilaterality in 68 cases(61%), smaller than 1.5cm in 100 cases(89%), lower density than breast parenchyma in 99 cases(88%), presence of central lucency in 99 cases(88%) and calcification in 3 cases(2.7%). Axillary lymph nodes(7 cases)in cases with breast cancer showed small size of less than 1.5cm in 4 cases(57%), absence of central lucency in 7 cases(100%) and iso-to higher density than breast parenchyma in 7 c&ses(100%). CONCLUSION: Axillary lymph nodes noted on MLO view of mammography, more than 1.5cm in diameter, absence of central lucency and iso to higher density than breast parenchyma could be suggested as clinically significant.
Breast ; Breast Neoplasms ; Humans ; Lymph Nodes* ; Mammography ; Retrospective Studies

PURPOSE: To evaluate the radiologic characteristics of axillary lymph nodes which are found on mediolateral oblique(MLO) view of mammography and to assess their clinical significance. MATERIALS AND METHODS: We retrospectively evaluated 119 cases axillary lymph nodes on MLO view of 410 cases of mammography in 205 patients regarding the size, bilaterality, number, grade of density, presence of central lucency, calcification of lymph nodes and presence of associated parenchymal pathologic lesions in breast. RESULTS: Axillary lymph nodes on MLO view were demonstrated in 119 (29%) among 410 cases. Axillary lymph nodes(112 cases) in cases without breast parenchymal lesions or with benign breast lesions showed; unilaterality in 68 cases(61%), smaller than 1.5cm in 100 cases(89%), lower density than breast parenchyma in 99 cases(88%), presence of central lucency in 99 cases(88%) and calcification in 3 cases(2.7%). Axillary lymph nodes(7 cases)in cases with breast cancer showed small size of less than 1.5cm in 4 cases(57%), absence of central lucency in 7 cases(100%) and iso-to higher density than breast parenchyma in 7 c&ses(100%). CONCLUSION: Axillary lymph nodes noted on MLO view of mammography, more than 1.5cm in diameter, absence of central lucency and iso to higher density than breast parenchyma could be suggested as clinically significant.
Breast ; Breast Neoplasms ; Humans ; Lymph Nodes* ; Mammography ; Retrospective Studies

BACKGROUND: It has been reported that two common vasodilators, nitroglycerin (NTG) and sodium nitroprusside (SNP), inhibit regional HPV and decrease arterial oxygenation as a result. The purpose of the present study was, therefore, to determine the comparative effect of NTG and SNP on HPV in a rabbit model of isolated lung perfusion with exclusion of the influential factors on HPV. METHODS: In adult white rabbits (n=20), lungs were isolated and perfused with the constant pulmonary blood flow. The acid-base status and temperature of perfusate was also constantly maintained. Thirty minutes later, baseline hypoxic pressor response (HPR) was measured as the difference of pulmonary artery pressure (PAP) between a period of 95% hyperoxic gas inhalation and that of 3% hypoxic gas inhalation. ED50 of NTG and SNP was calculated from the hypoxic pressor response measured in the same way, according to changes of doses (0.5, 1.0, 2.0, and 5.0 microgram/kg). RESULTS: Both NTG and SNP significantly decreased the baseline PAP in the doses of 1.0 microgram/kg and above, and also decreased the HPR in a dose-related manner. ED50 of SNP was significantly lower than that of NTG. CONCLUSIONS: NTG and SNP dilated directly the pulmonary vasculature and inhibited HPV in a dose- related manner. SNP had a greater inhibiting effect on HPV than NTG.
Adult ; Humans ; Inhalation ; Lung* ; Nitroglycerin* ; Nitroprusside* ; Oxygen ; Perfusion ; Pulmonary Artery ; Rabbits ; Vasoconstriction* ; Vasodilator Agents

No abstract available.

No abstract available.
Cytogenetics* ; Korea* ; Oncogenes* ; Stomach Neoplasms*

No abstract available.
Blotting, Southern*